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TRANSCRIPT
MRL-7
Data Logger
User Manual Manual Version: V01
2017-06-30
SOMMER GmbH
All rights reserved.
The copyrights for this manual are exclusively at the company
SOMMER GmbH A-6842 Koblach
This manual may only be multiplied or passed on to third-parties with written permission of the company SOMMER. This applies also if only excerpts of this manual are copied or passed on.
The same conditions apply for the passing on in digital form.
SOMMER GmbH
Strassenhaeuser 27
6842 Koblach
Austria
www.sommer.at
Distributed exclusively in the USA bywww.hydrologicalusa.com
CE compliance
This product is in conformity with the following standards
EN 60950-1
EN 61326-1
EN 61010
following the provision of directive R&TTE 1999/5/EC.
Information regarding images – image disclaimer
All images used in this manual are for illustrative purposes only. The actual product, the scope of delivery or individual features may vary.
Safety information
Please read this entire manual before setting up or operating this equipment. The non-compliance of this manual could result in damage to the equipment. Also in the case of non-compliance injuries of individuals cannot be excluded totally.
To make sure that the protection provided of and by this equipment is not impaired, do not use or install this equipment in any manner other than that specified in this manual.
Table of contents
1. Overview of the installation steps ...................................................................................... 1
2. Logger functions and interfaces ......................................................................................... 2
2.1. MRL-7 key functions and features ................................................................................... 2 2.2. Measurement and data storage concept .......................................................................... 3
2.2.1. Performing measurements ......................................................................................... 3 Analogue measurement example ....................................................................... 3 RS-485 measurement example .......................................................................... 3 SDI-12 measurement example ........................................................................... 4
2.2.2. Storing of measurement results and storage options .................................................. 5 2.2.3. Conditional storage .................................................................................................... 5
2.3. User interfaces ................................................................................................................ 6 2.3.1. Keyboard and display ................................................................................................. 6 2.3.2. Display menu structure .............................................................................................. 6 2.3.3. Parameterisation and data transfer ............................................................................ 7
2.4. Sensor connections and sensor power supply ................................................................. 7 2.4.1. Analogue interfaces ................................................................................................... 7 2.4.1. Digital interfaces ........................................................................................................ 8
SDI-12 ................................................................................................................ 8 RS-485 ............................................................................................................... 9
3. Hardware ............................................................................................................................ 10
3.1. How to open the housing ............................................................................................... 12 3.2. Mounting the MRL-7 ...................................................................................................... 13 3.3. Modem .......................................................................................................................... 14 3.4. Micro SIM Card, Micro SD Card and Button Cell Battery ............................................... 14
3.4.1. Insert / Exchange of Micro SIM Card ........................................................................ 15 3.4.2. Insert / Exchange of Micro SD Card ......................................................................... 16 3.4.3. Exchange of button cell ............................................................................................ 17
3.5. Pin description ............................................................................................................... 18 3.6. Spring Clips ................................................................................................................... 21
4. USB ..................................................................................................................................... 23
4.1. Requirements for flash drive .......................................................................................... 23 4.2. Reading out data via USB ............................................................................................. 23
5. MRL-7 keyboard operation ................................................................................................ 25
5.1. Description of keyboard buttons, navigating the menu ................................................... 25 5.2. Activating the display ..................................................................................................... 26 5.3. Deactivating the display ................................................................................................. 26 5.4. Reading (current) measurement values ......................................................................... 26 5.5. Adjusting measurement values ...................................................................................... 26 5.6. Settings ......................................................................................................................... 27
6. Parameterisation ................................................................................................................ 29
6.1. Commander ................................................................................................................... 29 6.2. Defining a local connection with the MRL-7 ................................................................... 29
6.2.1. RS-232 ..................................................................................................................... 30 6.2.2. Bluetooth .................................................................................................................. 34
6.3. Commander: Establishing a connection ......................................................................... 39 6.4. Defining a station ........................................................................................................... 40 6.5. Establish a connection to a “Station”.............................................................................. 43 6.6. Downloading stored data ............................................................................................... 43
6.7. Remote connection via IP Call ....................................................................................... 44 6.8. Data transmission via HTTP/FTP ................................................................................... 45 6.9. Time synchronisation ..................................................................................................... 45
7. Description of the parameters ........................................................................................... 46
8. Technical specifications .................................................................................................... 74
9. Appendix ............................................................................................................................. 75
9.1. Changing parameters via a terminal ............................................................................... 75 9.2. Error messages.............................................................................................................. 75 9.3. Index of tables ............................................................................................................... 77 9.4. Index of figures .............................................................................................................. 77
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1. Overview of the installation steps The following overview lists the most important steps for a full installation of the MRL-7 data logger. The installation is divided in creating and establishing a connection with the MRL-7 and defining a station. Additionally, the most important settings and measurements to be performed have to be defined.
1. Installation of “Commander” (chapter 6.1)
2. Define a “Connection” for being able to communicate with the MRL-7 (chapter 6.2)
3. Establish a “Connection” with the MRL-7 (chapter 6.3)
4. Define a “Station” for easy data management (chapter 6.4)
5. Set the MRL-7 parameters as required
a. Set the language and decimal character (chapters J-A and J-B)
b. Set the station number and station name assigned to the MRL-7 (chapters A and B)
c. Set the global measurement and storage interval (chapters C and D)
d. Define the number of measurement values to be stored (chapter E)
e. Define measurements to be performed and/or values to be retrieved from connected sensors (chapter G)
f. Configure the modem and data transmission parameters (chapters 6.7, 6.8 and Description of the Parameters chapter I)
g. Adjust the advanced (“Technics”) settings as per your requirements (chapter J)
6. Download stored data (chapters 4.2 and 6.6)
Attention: You must not connect any voltages bigger than 30 volts anywhere to the logger or to any pin. Applying voltages above 30 volts you risk your health, physical damages on the device or even a fire!
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2. Logger functions and interfaces
2.1. MRL-7 key functions and features
Fig. 1: MRL-7 key functions and features
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Advantages and main characteristics of the MRL-7 data logger
Reliable and energy-saving: optimised to collect monitoring data in remote areas without any infrastructure
Logger can be operated fully independently (with batteries or solar-module), integrated solar charge controller; no equipment cabinet required due to IP 67 rating
Ideal integration and compatibility with complete SOMMER sensor family as well as common sensor technology products
Backlit display for easy data readout and logger parameterisation
Parameterisation via RS-232 and Bluetooth or via IP-call / modem connection
Data readout with USB memory stick, Bluetooth-interface, RS-232 or via IP-call / modem connection
Minimum energy demand
Solid, compact, weatherproof aluminium box
Integrated remote data transmission through modem (2G / 3G and optionally 4G)
2.2. Measurement and data storage concept
2.2.1. Performing measurements
Analogue measurement example
In this example three analogue inputs (An1, An2, An3) are measured. The diagram below shows the first and second measurement intervals.
Fig. 2: Analogue measurement
Every measurement interval starts with the user defined holdback time (see J-I-E). Then An1 is measured three times (see J-I-F and J-I-G) and so are An2 and An3.
After the last measurement is completed, the sensor supply voltage is switched off until the next measurement interval starts again.
RS-485 measurement example
In this example three measurement values are requested from a sensor connected via the RS-485 interface. The diagram below shows the first and second measurement interval.
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Fig. 3: RS-485 measurement
At the beginning of every measurement interval the MRL-7 activates the RS-485 interface and issues three trigger commands to the sensor connected. As soon as all requested results are received by the data logger, the RS-485 interface is switched off automatically.
If the requested results are not received within the “Trig, timeout” (see J-G-I) the RS-485 interface is also switched off and the last values received are stored (again).
SDI-12 measurement example
In this example the measurement values are requested from three SDI-12 sensors connected. The diagram below shows the first and second measurement intervals.
Fig. 4: SDI-12 measurement
At the beginning of every measurement interval the MRL-7 issues a M-command to the first sensor which is answered with information about the number of measurement values available and the time until the data is ready to be requested by the data logger. After e.g. one second the MRL-7 issues a D-command to retrieve the measurement results from the sensor.
In this example the SDI-12 sensor addresses are “0”, “1” and “2”.
Table 1: SDI-12 example commands and answers
Example commands and answers
Command issued Answer received Comment
a 0M! 00013<CR><LF> 3 values are available in 1 second
b 0D0! 0+1.1+2.2+3.3><CR><LF> 3 values: “1.1”, “2.2”, “3.3”
c 1M! 10022<CR><LF> 2 values are available in 2 seconds
d 1D0! 1+4.4+5.5<CR><LF> 2 values: “4.4”, “5.5”
e 2M! 20031n<CR><LF> 1 value is available in 3 seconds
f 2D0! 2+6.6<CR><LF> 1 value: “6.6”
For detailed information about SDI-12 please see the official website www.sdi-12.org.
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2.2.2. Storing of measurement results and storage options
Measurement results are recorded in a separate storage interval.
The storage interval must always be equal or bigger than the set measurement interval.
The reason for using a separate storage interval is the advantage of being able to store minimum, maximum and/or mean values of measurement results. These can be set with the software Commander (see chapter G “Measurements, table”, column “Function”) or via the terminal menu (see 9.1).
Fig. 5: Example storage interval
In above example the analogue inputs An1, An2 and An3 are used to measure the outputs of three sensors. Because the storage interval covers two measurement intervals, it is possible to store either the mean value, the minimum or the maximum values measured within the set storage interval. If none of the aforementioned options is chosen, the stored value will be the last available measurement result(s) within the storage interval.
2.2.3. Conditional storage
Some measurement values are only stored when their value has changed since they were last stored. For these measurement values an alternative storage interval can be defined (see J-D-B) and the values can be reset to “0” once per day (see J-D-A).
The sensor types (“S-Typ”) using the conditional storage interval by default are “COUNT” and “SYS” values (see chapter G “Measurements, table” for more information).
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2.3. User interfaces
2.3.1. Keyboard and display
The MRL-7 display is being activated by pressing any of the buttons.
The cursor buttons , , and are used to navigate the on-screen menu.
Key Function(s)
Exit the current menu / Abort
Menu item down / Decrease value
Menu item up / Increase value
Enter the currently displayed menu item / Confirm / Trigger measurement
2.3.2. Display menu structure
The following table shows the on-screen menu structure.
It shows an example setup consisting of a temperature and humidity measurement and a snow depth measurement.
Table 2: Display menu structure
Start screen Displays the station number, current date and time.
* Measurements * Main menu item containing all measured values
01 Temperature (e.g. -5.58 °C) *
02 Humidity (e.g. 62.35 %) *
03 Snow depth (e.g. 436 mm) *
*** Stored V *** Main menu item containing all stored values
01 - 03 Temperature, Humidity, Snow depth *
*** Settings *** see chapter 5.6 „Settings“
**** Status **** Status information
1 Station No.
2 SOMMER ID
3 Station name
4 Date
5 Time
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6 Software version
7 ** IMSI
8 ** State
9 ** Type (Modem)
10 ** Signal (CSQ)
Values marked with “ * ” are measured / stored values, all others are system values.
Menu items marked with “ ** ” relate to the logger modem.
2.3.3. Parameterisation and data transfer
Several interfaces are available to download stored data and/or to change MRL-7 parameter settings:
Table 3: Interface types and features
Interface type data readout changing parameters
Keyboard and display
USB flash drive (see chapter 4) X
Bluetooth connection (see chapter 6.2.2) X X
Serial interface (see chapter 6.4) X X
IP call (see chapter 6.7) X X
automatic data transmission via HTTP/FTP (see chapter 6.8)
X
Time synchronisation via time server – NTP (see chapter 6.9)
2.4. Sensor connections and sensor power supply
2.4.1. Analogue interfaces
Table 4: Analogue inputs
Analogue input type / range
An 1 0 … 2.5V
An 2 0 … 2.5V
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An 3
configurable: - 0 … 2.5V - NTC - resistor > 2kΩ
An 4
configurable: - 0 … 2.5V - 0 … 0.3V - resistor > 1k25Ω - resistor < 1k25Ω - PT1000
Wind – speed frequency measurement
Wind – direction resistor measurement
Counter 1 counts voltage pulses (min. 5V)
Counter 2 counts voltage pulses (min. 5V) up / down
Attention: Counter 2 is no additional input. It replaces wind direction (either/or)!
All analogue sensors can be supplied via the internally provided voltage outputs. See technical data of MRL-7 and sensor used for more details and specific requirements.
Table 5: Supply voltage outputs
Output Maximum load
5V-Out 100mA (max. sum current over all sensors)
12V-Out 200mA (max. sum current over all sensors)
2,5V Reference 4mA
4 x switching outputs 1 x 1,10A
3 x 0,50A
max. total current: 2A
2.4.1. Digital interfaces
SDI-12
SDI-12 sensors can be connected to the MRL-7 via the “SDI12 – D” port. (See chapter 3.5 “Pin description” for the port location.)
When data is requested from several SDI-12 sensors the sequence of requests starts with the first sensor as specified in the “Measurements, table” (see item G).
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Example:
Fig. 6: SDI-12 example configuration
Attention: SDI-12 sensors must be supplied either separately or via the MRL-7 12V output (max. 200mA). They must not be operated via switched supply lines. For this reason the parameter setting of the sensor supply (see chapter J-I-B “12V sensor supply”) has to be set to “always on”.
RS-485
Sensors manufactured by SOMMER with an RS-485 interface are connected to the MRL-7 via the port “RS485 A”. (See chapter 3.5 “Pin description” for the port location.)
The RS-485 interface is always ready to receive measurement values when activated (see chapter J-G “RS485-2”). The polling and trigger procedure is explained in chapter 2.2.1.2. “RS-485 measurement example”.
Attention: When more than one sensor is connected to the RS-485 bus, data communication conflicts can occur if multiple sensors send their results to the MRL-7 at the same time.
The prefix option (see chapter J-G “RS485-2”) has to be active when multiple sensors are connected so that recorded data can be assigned to the correct device.
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3. Hardware The MRL-7 is available in two different configurations:
- MRL-7: as per standard configuration and without integrated battery
- MRL-7B: with a higher housing to accommodate an integrated battery
Fig. 7: MRL-7
Fig. 8: MRL-7B
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Drawings of MRL-7 housing:
Fig. 9: MRL-7 housing, dimensions (in mm)
Fig. 10: MRL-7B housing, dimensions (in mm)
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3.1. How to open the housing
Attention: Before the housing is opened, the power supply must be disconnected in order not to risk an electric shock or an electrical short on the hardware.
Remove the covering strips on the left and right side of the housing.
Fig. 11: MRL-7 covering strips
Unscrew the screws using a Philips head no. 2 or a straight head screwdriver.
Fig. 12: MRL-7 screws
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Open the housing by flipping the lid open.
Fig. 13: Opening the housing of the MRL-7
3.2. Mounting the MRL-7
After removing the covering strips the MRL-7 can be mounted on a backplane with four screws:
Fig. 14: Holes for Mounting
Compatible screws:
M4 cheese-head screw (included within scope of supply)
M5 hexagon socket head cap screw
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3.3. Modem
Data recorded by the MRL-7 can be transmitted to user-defined servers (HTTP and/or FTP) via the integrated modem.
In order to minimize the power consumption the data logger controls the modem supply voltage. Thus, the modem is only switched on when a data transfer has to be performed.
To activate the modem the MRL-7 parameter “Modem functionality” must be set to “on”. For more details and all further modem configurations please see chapter I “Modem”.
3.4. Micro SIM Card, Micro SD Card and Button Cell Battery
The following picture shows the slots respectively the bracket where to find, insert and exchange the micro SIM card, the micro SD card and the button cell of the MRL-7.
To insert and / or switch the micro SIM card, the micro SD card or the button cell, open the MRL-7 housing as described in chapter 3.1 “How to open the housing”.
Attention: Before the housing is opened, the power supply must be disconnected in order not to risk an electric shock or an electrical short on the hardware.
Fig. 15: Lid of the MRL-7 from inside
Micro SD card
Button cell
Micro SIM card
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3.4.1. Insert / Exchange of Micro SIM Card
1. To insert / exchange the micro SIM card gently press on the covering with your finger and shift it a little to the side.
2. Then flip the cover open.
3. The micro SIM card can now be inserted, removed or exchanged. Note the correct orientation of the card to be inserted (it will only fit one way).
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4. Flip the cover back again and lock it by sliding it back to its old position.
The lock and un-lock position is also marked on the micro SIM card cover itself.
Note that the micro SIM card is not within the scope of supply.
3.4.2. Insert / Exchange of Micro SD Card
1. To insert / exchange the micro SD card gently press on the covering with your finger and shift it a little back.
2. Then flip the cover open.
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3. The micro SD card can now be inserted, removed or exchanged. Note the correct orientation of the card to be inserted (it will only fit one way).
4. Flip the cover back again and lock it by sliding it back to its old position.
The lock and un-lock position is also marked on the cover itself. Look closely.
Note that the SD card is not within scope of supply
3.4.3. Exchange of button cell
The MRL-7 is delivered with a button cell built in. This little battery ensures that the time and date function of the logger is not interrupted during the time when the logger lacks any other power supply.
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1. To exchange the button cell use a screw driver and gently push the cell out of its holding bracket from behind. To insert a new cell simply push it with your fingers into the holding bracket from the other side.
3.5. Pin description
Fig. 16: MRL-7 pin description
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Table 6: MRL-7 pin assignment
Connector Pin(s) Function
Left-hand side connectors:
X1 - Battery connector (-) [internal and/or external battery] 1)
X1 + Battery connector (+), max. 14 V [internal and/or external battery] 1)
X2 - Solar Supply voltage (-) or solar panel connector (-)
X2 NC Not connected / do not use!
X2 dis CR Disabling internal charge regulator
X2 + Solar Supply voltage (+) or solar panel connector (+)
X5 +RS485A RS-485 A
X5 -RS485B RS-485 B
X5 SDI12 SDI-12 sensor connector
X5 GND ground connector
X19 5V-Out 5 V output for sensor supply (max. 100 mA) *)
X19 Counter 2-b Counter 2 secondary input for encoders
X19 Counter 2-a Counter 2 input
X19 GND Ground connector
X10 Counter 1 Counter 1 input
X10 GND Ground connector
X12 2,5V Ref-Out 2.5 V reference voltage output
X12 Wind-Dir. Wind direction potentiometer input
X12 Wind-Sp. Wind speed input
X12 GND Ground connector
Right-hand side connectors:
X8 AGND Analog ground connector
X8 AN1 Analog input 1
X8 5V-Out 5 V output for sensor supply (max. 100 mA) *)
X8 12V-Out 12 V output for sensor supply (max. 200 mA) **)
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X22 AGND Analog ground connector
X22 AN2 Analog input 2
X22 5V-Out 5 V output for sensor supply (max. 100 mA) *)
X22 12V-Out 12 V output for sensor supply (max. 200 mA) **)
X9 AGND Analog ground connector
X9 AN3 Analog input 3
X9 5V-Out 5 V output for sensor supply (max. 100 mA) *)
X9 12V-Out 12 V output for sensor supply (max. 200 mA) **)
X11 CurrL Differential current input (-)
X11 VL Differential voltage input (-)
X11 AN4 / VH Differential voltage input (+)
X11 CurrH Differential current input (+)
X20 12Vbat OUT 12 V power supply (> max. 1 A)
X20 12Vbat OUT 12 V power supply (> max. 1 A)
X20 12Vbat OUT 12 V power supply (> max. 1 A)
X20 GND ground connector for 12 V power supply
X21 SW1 switching output 1, 12 V
X21 SW2 switching output 2, 12 V
X21 SW3 switching output 3, 12 V
X21 GND ground connector for switching output, 12 V
1) External batteries, if attached here, must always be of the same type as the internally used one, if the internal and the external battery are used/attached together.
*) 100 mA sum current over all sensors
**) 200 mA sum current over all sensors
Attention: You must not connect any voltages bigger than 30 volts anywhere to the logger or to any pin. Applying voltages above 30 volts you risk your health, physical damages on the device or even a fire!
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3.6. Spring Clips
The MRL-7 is delivered with an assortment of spring clips for connecting sensors and power supply lines.
1. 4-pin spring clip
2. Use a flat head screw driver to compress the internal spring.
3. Push the screw driver in to lock down the internal spring and open the connection terminal.
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4. Insert the wire.
5. Insert the wire completely.
6. Pull out the screw driver to release the spring and fix the wire.
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4. USB
4.1. Requirements for flash drive
The used flash drive must be formatted as FAT32.
There must be no file (in the main directory) present from a previous readout of that specific MRL-7 (same Station number).
The file created on the flash drive is named “Stationnumber.csv”.
4.2. Reading out data via USB
The following steps describe the data readout to a connected flash drive:
Remove (unscrew) the cap that protects the USB port.
Plug in a USB flash drive into the USB connector
Fig. 17: MRL-7 USB Connector
Simply press the button until the display shows the message “searching Stick”. The MRL-7 searches for a USB flash drive for six seconds. Plug in a USB flash drive now (or also before) and all data are copied automatically to the USB flash drive since the last readout.
This process may take up to three minutes. During the data download the message “Transfer running” is displayed.
After the data transfer is finished, the message “data copied” is displayed.
The background light of the MRL-7 turns off during the data download to save energy.
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To transfer all stored data follow these steps:
o Press and hold the button until “searching for Stick” is displayed.
o Now additionally and promptly press the button , release the button again
and after that also release the button again.
Alternatively, all data can be copied to a connected flash drive via the “Settings” menu. See chapter 5.6 for more information.
Attention: After reading out data to a flash drive, the USB port cap must be screwed on again. When doing so, please take care that the threads of the cap and the USB port are well aligned and the cap can be screwed on easily.
If screwing on the cap does not work smoothly, it maybe is not put on nicely so that the threads do not fit well. Unscrew the cap and carefully try again.
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5. MRL-7 keyboard operation
Fig. 18: MRL-7 keyboard
5.1. Description of keyboard buttons, navigating the menu
The cursor buttons , , and are used to navigate the on-screen menu.
The button is used to search for a USB flash drive, to activate/search for a Bluetooth connection or for special functions as described further below.
Key Function(s)
Exit the current (sub)menu / abort
Menu item down / decrease value
Menu item up / increase value
Enter the currently displayed menu item / confirm / trigger measurement
Searching stick / connect Bluetooth/ special functions
When Bluetooth connection is activated, any further manual access to the display menu is denied. The message “BT active no access!” is displayed.
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Attention: The button also aborts any activities on the logger, such as active Bluetooth connections, Modem test mode function, data downloads to USB flash drive etc.
5.2. Activating the display
The MRL-7 display is activated by pressing any button for at least one second and shows the main screen (= station number, current date and current time). After four seconds without any activity on the logger, the display switches and shows automatically the first measurement value.
5.3. Deactivating the display
The display will automatically be deactivated / go asleep again in order to minimise the logger’s energy consumption if no further button is pressed after activating the display for at least 10 seconds.
In case any further buttons are pressed after activating the display, the display will automatically be deactivated / go asleep again only after 1 minute.
Alternatively, the display can also be deactivated by pressing and holding the button for at least 2 seconds. The message “Access end hold key!” is displayed. Keep pressing the button and the display will be deactivated shortly thereafter.
5.4. Reading (current) measurement values
Activate the MRL-7 display by pressing any button. After 4 seconds the display will show automatically the first measurement value.
Or, after activating the display, press any button (except the button ) again to show the first measurement value in the list immediately.
To navigate the list use the buttons and .
To manually trigger a measurement of a single measurement value press the button.
5.5. Adjusting measurement values
Enter the measurement value list as described in the chapter before and navigate to the value to be adjusted.
To adjust a single measurement value press and hold the button for at least two seconds. Now input the access code as described below.
To adjust the measurement value use the buttons and .
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Press the button to confirm the adjustment, or press to cancel the adjustment.
Access code: To enter the access code press the key sequence 2x followed by 2x
.
Attention: As long as the display is active during the ongoing session, the entered access code unlocks all system settings of the logger.
Press and hold a button to increase or decrease the selected measurement value more quickly (increase/decrease speed doubles every two seconds).
Instantly adjust a measurement value to “0” by pressing the button.
5.6. Settings
Some MRL-7 settings can be adjusted via the display menu.
To adjust the settings activate the MRL-7 display by pressing any button.
Press two times and select the menu “*** Settings ***”. Confirm your selection by pressing
and input the access code as described above.
To change settings or to start a selected special mode navigate to the desired menu item and
press . To cancel inputting a value or abort a special mode press .
Table 7: ***** Settings *****
***** Settings ***** Example Value Description
1 Station No. 20160111 Station number
2 Date 06.04.2017 Current date
3 Time 09:26:28 Current day time
4 Exposure lock off
5 Copy all data
6 Erase all data
7 Continuous M turn on Continuous Measurement
8 Adjust Contrast weak Adjusts the display contrast
9 Reboot Device Reboots the MRL-7 without the need to switch the supply voltage.
10 Modem Testmode Only available, if a modem is configured at all
4 Exposure lock
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When activated reading measurement values via the MRL-7 display is only possible after inputting the access code. Also copying stored data to a connected flash drive or via a Bluetooth connection requires the user to input the access code. (see also chapter J-C-E “Exposure lock”).
This applies to all measurement values except for special observer inputs.
5 Copy all data
When selected all stored data are copied to a connected USB flash drive.
6 Erase all data
Attention: When selected, all data stored on the MRL-7 are deleted!
7 Continuous Measurement
Activates a special continuous measurement mode. Measurements are performed in the shortest possible interval. This option is intended for testing setups.
The continuous measurement mode is deactivated automatically after three minutes.
8 Adjust Contrast
“Adjusts” the display contrast. There are four different levels available: base, weak, high and medium.
9 Reboot Device
Reboots the MRL-7 without the need to switch the supply voltage. This option is helpful for performing firmware updates, which require the device to be restarted.
10 Modem Testmode
A number of automatic tests are performed and related information is displayed:
The modem is initialized.
The SIM card IMSI number is displayed for a short amount of time.
To freeze the display press and hold the button.
The signal strength is tested and displayed.
The defined connections are established:
o The MRL-7 synchronizes its time with the defined time server.
o Data are sent to all defined servers.
o The MRL-7 IP call function is activated.
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6. Parameterisation
6.1. Commander
The MRL-7 is parameterized with the software Commander or via the terminal menu (see chapter 9.1).
To edit the parameters with the PC software Commander, the “Expert” mode must be active (for more details see Commander manual):
Fig. 19: Setting the “Expert” mode in the software “Commander”
The PC software Commander highlights the edited parameters. After uploading the changes to the MRL-7, the modified parameters are active (for more details see Commander manual).
The installation software of the Commander is delivered on a USB flash drive together with the MRL-7.
6.2. Defining a local connection with the MRL-7
The connection between the MRL-7 and a computer is established via the USB/RS-232 converter (not within scope of supply) or via Bluetooth.
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6.2.1. RS-232
Fig. 20: USB/RS-232 converter
Fig. 21: Connecting the USB/RS-232 converter
Plugin the USB connector at any USB port of your computer and use the software Commander to define a connection. Then set the parameters as required using the “Communication assistant” as described hereafter.
Install and start the software Commander.
Launch the “Communication assistant” and follow the given instructions.
Use the buttons “Next” and “Back” to adjust the different settings from one step to another or press “Cancel” to abort the communication assistant.
Select “Serial connection” when using the communication cable.
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Make sure the MRL-7 is supplied with power (either internal batteries and/or external power supply), and the communication cable is plugged into the data logger on one end and the other end is connected to a USB port of the laptop running “Commander”.
Select “Logger (115200 Bd)”
Select the COM port that was assigned to the connection cable from the drop down list.
If more than one COM port is listed and you are unsure which to select, disconnect the connection cable and repeat the search. The COM ports listed now are not assigned to the connection cable. Plug in the converter and repeat the search once more. Now an additional COM port will be listed. This is the one assigned to the connection cable.
The communication assistant dynamically changes between 7 and 10 steps, depending on whether an existing
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connection can be selected or if a new connection has to be established (additional steps to define specific port and/or station information).
Assign a name to the connection for later use.
An automatic search for connected devices is performed. This step can take up to two minutes.
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If a station already exists, it will be recognised and automatically selected.
It can be decided whether or not to assign the found device(s) to the “Station”.
If no station is found, a “Name” for the station can be defined.
Select “Yes” to proceed.
The station created in the step before is selected automatically and is ready to be used.
Alternatively and without using the “Communication assistant”, the communication parameters can also be set manually within the tab “Connections”. There are different possibilities to display the tab “Connections”:
by pressing “F8” on your keyboard
by selecting “Connections (F8)” in the main menu item “Tabs” (for temporary display only)
by selecting “Show connections tab” that can be found in the main menu item “Options”, submenu item “Tabs” (for permanent display).
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For further information on how to define connections, please see the Commander manual.
6.2.2. Bluetooth
Either an internal Bluetooth module or a USB Bluetooth dongle has to be available on the computer used.
Use the software “Commander” to define a Bluetooth connection as described hereafter.
Before a Bluetooth connection can be established the MRL-7 Bluetooth transceiver must
be switched on. Press and hold the button until the message “hold for BT” is
displayed. Keep holding the button until the message „waiting for BT no access“ is displayed. Now a Bluetooth connection can be established with the MRL-7.
The MRL-7 Bluetooth ID is printed on a sticker on the MRL-7 housing.
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Install and start the software “Commander”.
Launch the “Communication assistant”.
Use the buttons “Next” and “Back” to adjust the different settings from one step to another or press “Cancel” to abort the communication assistant.
Select “Bluetooth” for type of connection and follow the instructions of the assistant.
The first time a Bluetooth connection is established with Commander a “New connection” needs to be selected.
The communication assistant dynamically changes between 8 and 9 steps, depending on whether an existing connection can be selected or if a new connection has to be established (additional steps to define specific port and/or station information).
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This step might take a few seconds.
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This step might take a few seconds.
If no matching station exists, a “Name” for the station can be defined.
If a station already exists, it will be recognised and automatically selected.
Select “Yes” to proceed.
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The station created in the step before is selected automatically and is ready to be used.
Alternatively and without using the “Communication assistant”, the communication parameters can also be set manually within the tab “Connections”. There are different possibilities to display the tab “Connections”:
by pressing “F8” on your keyboard
by selecting “Connections (F8)” in the main menu item “Tabs” (for temporary display only)
by selecting “Show connections tab” that can be found in the main menu item “Options”, submenu item “Tabs” (for permanent display).
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For further information on how to define connections, please see the Commander manual.
6.3. Commander: Establishing a connection
To establish a connection to an MRL-7 either a “Connection” or “Station” (6.4 “Defining a station”) can be selected. When a station is selected one of the assigned connections must be chosen.
The parameterisation of the MRL-7 is performed with the software Commander. To establish a connection with the device follow the steps described in the previous chapter.
To download the MRL-7 parameters switch to the “Parameters (F2)” tab and click “Download parameters”.
When downloading the parameters for the first time, the process will take approximately 2 minutes. When the process is repeated, the download is completed in a shorter amount of time.
Fig. 22: Download Parameters
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After the download has been completed a list of all parameters is displayed.
All parameters are described in chapter 7 “Description of the parameters”.
Fig. 23: List of parameters
6.4. Defining a station
To download stored data, to comfortably manage several MRL-7 devices and to enable additional functions (e.g. IP call), it is advised to create a “station” in Commander.
To create a station select the “Stations (F7)” tab and click “New Station”.
Fig. 24: New Station
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Input the Station ID and SOMMER ID set in the MRL-7.
When delivered both IDs are identical with the device’s serial number. The MRL-7 serial number (S/N) is printed on the device housing.
Fig. 25: Station no. and SOMMER ID
Fig. 26: Station no. and SOMMER ID
Select which previously defined “Connections” (Serial, Bluetooth, IP Call, …) to assign to the “Station”.
The default “Connection” for this station can be set by checking the circle next to the connection type.
Fig. 27: Assigning connections to a station
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Depending on the connection types assigned to the station additional information must be inputted.
Please see chapter 6.2.2 “Bluetooth” and chapter 6.7 “Remote connection via IP Call” for further details.
Fig. 28: Connection details
When data are downloaded from a connected MRL-7 they are saved in an “archive” file by default. Every archive file contains all data from a year or month, depending on the chosen “Archive Type”. When set to “None” all data recorded by the MRL-7 will be saved in one file.
The default location of downloaded data files is “C:\Users\Public\Documents\Sommer\Data\”
Fig. 29: Data archive
To finish the session press “Save station”.
Fig. 30: Saving a station
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6.5. Establish a connection to a “Station”
To connect to a station select the mode “Station” in the window “Communication”. Choose the station name and select a connection via which the MRL-7 is reachable.
The settings are applied immediately.
Click “Connect” now. After the connection is established successfully it is now possible to download parameters from the MRL-7, to read out measurement data or to establish a terminal connection.
Fig. 31: Connecting to a station
6.6. Downloading stored data
To download data from an MRL-7 select the “Data (F4)” tab in Commander. Choose the “Station” and select a connection via which the MRL-7 is reachable.
Now click the button “Transfer data” to download all stored data of the station selected from the data logger.
Fig. 32: Downloading stored data
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Click “Download data manually” to download data stored since a manually chosen date and time. Use the slider to select the timeframe.
Fig. 33: Downloading stored data manually
6.7. Remote connection via IP Call
To establish a connection to an MRL-7 via an IP call, the MRL-7 has to be assigned to a station which is set up for IP call connection.
To establish a remote connection, the SIM card’s IMSI number has be entered in the station settings.
The IMSI number of an integrated SIM card can be retrieved:
reading out the device status via the tab “Parameters (F2)”, “K Special Functions” (see chapter K-A “Device status”)
using the “Modem Testmode” feature (see chapter 5.6 “Settings”)
or reading the menue 4 “Status” (item 7 “IMSI”) via the logger display itself.
Fig. 34: IMSI number
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Click “Save station” to store the settings.
Fig. 35: Station no. and SOMMER ID
To establish the connection select “Station” as “Mode”, choose the station you want to connect to and then select the “IP Call” connection.
The settings are applied immediately.
Now either parameters can be downloaded from the MRL-7 or a terminal connection established by clicking “Connect”.
Fig. 36: IP call connection
6.8. Data transmission via HTTP/FTP
When data are transferred to a server via HTTP or FTP protocol (see chapter I-C “Data transmission 1”), all data stored on the logger will be sent to the defined server(s).
The first transmission includes all data recorded so far. Further transmissions will include all data recorded since the last successful transmission.
In case the data could not be transferred (e.g. because of bad cell reception) the “missing” data will be sent on with the next successful transmission.
6.9. Time synchronisation
The MRL-7 can synchronise its internal clock with a time-server (NTP-Server).
The time synchronisation settings are described in chapters I-F “NTP synchronisation time” through I-I “NTP timezone”.
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7. Description of the parameters The MRL-7 settings are opened and adjusted with the SOMMER PC software "Commander".
Alternatively, all settings can be accessed and modified via a terminal program (see chapter 9.1 “Changing parameters via a terminal”).
The PC software “Commander” highlights the edited parameters. After uploading the changes to the MRL-7, the modified parameters are active.
The installation software of the Commander is delivered on a USB flash drive together with the MRL-7.
For further details, please refer to the user manual for the PC software “Commander”.
Main menu
A Station ID
B Station name
C Measurement interval
D Storage interval
E Measurements, max. number
F Aux measurements, max. number
G Measurements, table
H Messages, table
I Modem
J Technics
K Special functions
The parameters are arranged in a main menu with submenus. The menu items are opened and closed by double-clicking them.
A Station ID
The station ID is set to the MRL-7 serial number by default but can be adjusted by users.
B Station name
User defined name of the station (max. 32 characters).
C Measurement interval
With this setting, the measurement interval can be defined.
Value range 00:00:02…12:00:00 00:01:00 (default)
Value range 0 ... 99999999 00000000 (default)
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The measurement interval defines at which times measurements are performed.
D Storage interval
With this setting, the storage interval can be defined.
Value range 00:00:10…12:00:00 00:01:00 (default)
The storage interval defines at which times the measured values are saved.
E Measurements, max. number
Up to 99 measurement values can be defined for the MRL-7.
Depending on the ordered components, SOMMER preconfigures some measurements. However, the end user can define additional measurements. The configuration steps are described in chapter G – see further below.
Value range 1…99 4 (default)
The maximum of 99 measurement values refers to the measurement values as set in chapter “E” and “F” (measurements and auxiliary measurements) in total.
F Aux measurements, max. number
Auxiliary measurement values. Up to 99 auxiliary measurement values can be defined for the MRL-7.
Same as the ordinary measurement values the auxiliary measurement values are displayed in the measurement table (chapter G) however numbered starting from 99 downwards.
Auxiliary measurement values are set in order to be able to check additional/multiple limit values.
In addition, an auxiliary measurement value allows defining an existing measurement value with an altered setting (e.g. different unit, decimals, scale etc.).
The maximum of 99 measurement values refers to the measurement values as set in chapter “E” and “F” in total.
Auxiliary measurement values are not stored and transmitted in the measurement data file. They can only be read via the “Measurements, table” (chapter G) in the Commander or the terminal window.
G Measurements, table
Column title Description
1 … 99 Unique number assigned to a measurement value. This number specifies the position of the measurement value in the MRL-7 output string (RS-232 and/or SDI-12). The same number is also assigned to the measurement value when saved values are downloaded from the data logger.
Value range 1 … 99 1 (default)
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Function The function defines which measurement values are saved: - off: No measurement is performed and no values are saved. - actual: The last measurement result within the active storage
interval is saved. - meanval: The mean value of all measurements within the last
storage interval is saved. - minimum: The lowest measured value within the last storage
interval is saved. - maximum: The highest measured value within the last storage
interval is saved. - sum: The sum of all measurement results within the last storage
interval is saved. - intens.: The intensity (e.g. of the rainfall) is saved (only if the
counter input is used). - diff.: The difference of the last stored value to the latest
measurement result is saved. - custom1: currently not defined - custom2: currently not defined
Identifier User defined name of the measurement value.
Unit User defined unit of the measurement value.
Decimals Defines the number of decimal places assigned to the measurement value.
- 1 … 5: 1 to 5 decimal places can be defined for the measurement value.
- none: No decimals are defined for the measurement value
- as S: The source value’s decimal place is assumed for the MRL-7.
Scale User defined factor with which the retrieved measurement value is multiplied. Attention: This option is only available when the “Decimals” are not set to “as S”.
Offset User defined offset that is applied to the retrieved measurement value.
Adjustment By clicking this button, a measurement is performed and the result is outputted. In case the outputted value is incorrect, the value can be adjusted by inputting the correct value. This adjustment only affects the “Offset” but not the “Scale”.
Test A measurement of the selected measurement value is performed and the result is outputted.
S-Typ Sensor type (source)
- AIN: analogue inputs AN1: analogue input 1 AN2: analogue input 2 AN3 (N): analogue input 3 AN4 (D): analogue differential input
- WIND: preconfigured for wind sensor speed: wind speed direct.: wind direction
- COUNT: counter input (registers and counts voltage pulses at the counter input). Counter 1 Counter 2a Counter 2ab: quadrature encoder
- SDI12: a measurement value is retrieved from a connected SDI-12 slave device.
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The sensor address is set via the “S-NUM” and the measurement value position is defined via the “S-MEA” (see details for the table “S-MEA” further down).
- SBP: A measurement value is retrieved from a connected SOMMER sensor that supports the SBP protocol (via RS-485 connected to BUS 2/AB). The sensor address is set via the “S-NUM” and the measurement value position is defined via the “S-MEA” (see the following lines for more information).
- MIO: A measurement value is retrieved from a connected SOMMER sensor that supports the MIO protocol. The sensor address is set via the “S-NUM” and the measurement value position is defined via the “S-MEA” (see the following lines for more information).
- SYS: A set of internally measured values is available to be retrieved and stored: key A: Counts the times the MRL-7 is manually activated via its keyboard. key S: Counts the times the MRL-7 is manually activated via its keyboard with a special key sequence. manual: Observer input: Any time a manual adjustment of this value is performed the newly set value is stored unless it has not changed. exep. A: Analysis value for SOMMER exep. B: Analysis value for SOMMER light: Ambient light measurement result +Sup V: Supply voltage measurement +Bat V: Internal battery voltage 5V sup: Internal 5V bus measurement mo CSQ: Modem signal strength mo excep.: Modem exception messages mo srv1: Modem server 1 mo srv2: Modem server 2 mo srv3: Modem server 3 Switch: Current output switch status Message: Number of successful message transmissions since the last storage event.
The message number defined as per chapter “H Messages, table” must be inputted in the field “S-NUM”.
- RECYC: “Recycled” channel value The source value is defined via the “S-NUM” which corresponds with a (previously) defined measurement value. Example: Measurement value no. “03” is set to measure analogue input 1 (AIN1) and to store the “raw” value. A RECYC-measurement value is defined as measurement value no. “12”. The relating “S-NUM” is set to “03” to retrieve the measured “raw”
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value. Additionally the number of decimal places is set to “2” to enable the option to set a “Scale” of “0.5”. The stored value of measurement value no. “12” will now always be half the measured value “03” (AIN1).
S-NUM The sensor number assigned to the desired measurement source: Examples:
- SDI-12 sensor address “3” - RS-485 sensor address “2”
S-MEA The position in the input string of the measurement value to be retrieved and stored. Example: SDI-12 sensor output values= 0.0 + 1.1 + 2.2 + 3.3 + … value position = “1” “2” “3” “4” … To retrieve the value 1.1 the S-MEA has to be set to “2”.
S-ADD Additional commands to be issued along a standard request for data to a source. The different commands are related to according sensor types (“S-TYP”) as set.
- “_Cn”: SDI-12 C-command - “CCn”: SDI-12 C-command with CRC - “_Mn”: SDI-12 M-command - “MCn”: SDI-12 M-command with CRC - _Rm”: SDI-12 R-command - “RCm”: SDI-12 R-command with CRC
n … SDI-12 measurement cycle number m … SDI-12 measurement output line number - SW: “swap A/B” for S-TYP quadrature encoder - NR: “no reset” for function “sum” - DD: for sum channels - SY: "sync" for async channels to store as
synchron - AS: "async" for sync channels to store asynchron - ST: "smaller than" for limits that fall below - GS: "grenzwert status" to store the limit value
status of a specific channel - TD: "trigger data" polling of data without triggering
the measurement - TF: "trigger fake" something for S-TYP “MIO” add-
on - SC: "subchannel" for S-TYP “SBP”
Example: The desired data is outputted when an “M2” command is issued to the connected sensor. To ascertain the data is transmitted correctly a CRC checksum is also requested. S-ADD = “MC2”
Limit User defined limit value that can be entered. The value format is the same as for the measurement value itself. By default the measurement value has to exceed the limit trigger condition. If the value shall be deceeded, the additional command “ST” (smaller than) must be set.
Messages If a message for a specific measurement and its limit value is defined (see chapter H “Measurements, table”), a box for the according message number appears. Here the box of the message, that shall be triggered once the limit value status is reached, must be ticked off.
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H Messages, table
The MRL-7 features a configurable messaging system. Messages are transmitted to the defined recipients whenever the “Limit” as set for a measurement value is exceeded or deceeded (according to the message configuration).
Column title Description
1 … 16 Unique number assigned to a message. A maximum of 16 independent messages can be set.
message The message defines which kind of message is used: - off: No message is sent - Switch: A switching output is switched when the trigger condition is
fulfilled. - E-mail: An E-Mail is sent to the defined recipient when the trigger
condition is fulfilled. - text: A SMS text message is sent to the defined recipient when the
trigger condition is fulfilled.
Recipient User defined recipient - Switch: setting not applicable / not available - E-Mail: E-Mail address of the recipient - text: Phone number of the recipient
Dialling codes can start with either “00” or “+” Example: A text message (SMS) shall be sent to a recipient in Germany while the modem is installed in France. The dialling code for Germany is either “0049” or “+49” followed by the (national) phone number.
Subject Subject for e-mail messages. (“Subject” is not applicable / not available for Switch and text.)
To be defined by user, max. 80 characters available. Facultative, message content codes can be used. See the following “Content Codes” table for detailed description.
Content Defines the content of the message.
To be defined by user, max. 160 characters available. Facultative, message content codes can be used. See the following “Content Codes” table for detailed description.
switch Defines which switching output is used (check boxes) – applicable only with “Switch”.
Hold Defines the timeframe in seconds during which the switching output is switched as soon as the trigger condition is fulfilled. Example: Switching output number 2 shall be activated for 30 seconds after the trigger condition is fulfilled: Setting “switch” = “02” (via check box) Setting “Hold” = “30”
Content Codes
The message content can be configured according to end user’s requirements.
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To insert standard message content more easily a number of inline content codes are available.
Code Description
%sid% Station ID assigned to the MRL-7
%sname% Station name assigned to the MRL-7
%cname% Name of the channel that triggered the message
%cunit% Unit assigned to the channel that triggered the message
%time% Time of the message transmission
%date% Date of the message transmission
%cval% Latest channel measurement result at the time of the message transmission
%tval% Set limit value that was exceeded/deceeded
%rval” Measurement result that triggered the message output
%wnum% Message number as defined per MRL-7 setup (01 … 16)
%cp% Measurement result of a user defined channel. Example: Channel number “02” triggers an E-Mail message. This message shall contain the channel name and value of the measurement result that triggered the message and additionally the current result of channel number “14”. “Content” = %cname% %rval% Ch.14 m.value = %cp14%
I Modem
Modem Unit
A Modem functionality off
B Modem config
C Data transmission 1
D Data transmission 2
E Data transmission 3
F NTP synchronisation time 02:08:43
G NTP server
H NTP port 123
I NTP timezone 3600 sec
J Background function off
K Standby, start time 08:00:00
L Standby, duration 01:00:00
M IP Call server mds.sommer.at
N IP Call port 4647
O IP Call interval 00:01:00
P E-mail/SMTP
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I-A Modem functionality
Setting Description
on The modem function is activated.
off (default) The modem function is deactivated.
I-B Modem config
I-B-A SIM pin
Setting Description
-1 (default) Configures the SIM card PIN. When set to “-1” no PIN is required for the SIM card.
It is not possible to change the SIM card’s PIN with the MRL-7. Such changes have to be performed with a different device (e.g. mobile phone).
Attention: If the SIM pin is set incorrectly, the SIM card will be locked after three consecutively failing attempts to transfer data.
I-B-B Net type
To allow CSD calls the setting has to be “2G”.
I-B-C Foreign operator mcc&mnc
Setting Description
“blank” (default) If the field is blank, the setting is deactivated.
Enter the mcc&mnc code for your home network in case your provider is a virtual one only. Make sure to enter the correct code!
I-B-D Operator select
Setting Description
auto (default) The network operator is selected automatically.
home Only the SIM card’s home network is used.
Prefer home Preferably the set home network operator is chosen by default. If no connection can be established with the home network, a search for all available operators is performed and a different operator is selected automatically.
Setting Description
auto (default) The network type is selected automatically.
3G Only 3G networks are used to transfer data.
2G Only 2G networks are used to transfer data.
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I-B-E APN address
Setting Description
“blank” (default) Configures the APN server address
The APN settings in menu items I-B-E, I-B-F and I-B-G can be set either manually or the settings are chosen from a predefined list with the software Commander. The list opens by clicking on “Select APN” in the menu “Special commands” on the left bottom side of the window.
Fig. 37: APN list
I-B-F APN user name
Setting Description
“blank” (default) Configures the APN user name
I-B-G APN password
Setting Description
“blank” (default) Configures the APN password
I-B-H Custom command 1
Setting Description
“blank” (default) Configures special commands to be sent to the modem (AT). This feature should be used by modem experts only. All issued AT commands must be answered with “ok” by the connected modem.
I-B-I Custom command 2
Setting Description
“blank” (default) Configures special commands to be sent to the modem (AT). This feature should be used by modem experts only. All issued AT commands must be answered with “ok” by the connected modem.
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I-C Data transmission 1
The measured and recorded data / camera pictures can be transmitted to up to three separate servers. The data can either be transferred via HTTP or FTP protocol.
I-C-A Target server type
Setting Description
off (default) No data transferred
http The data is sent to a HTTP server (HTTP settings are used)
ftp The data is sent to a FTP server (FTP settings are used)
I-C-B Data transmission interval
Unit hh:mm:ss hh:mm:ss
Value range 00:01:00 … 23:59:59 00:10:00 (default)
I-C-C Data transmission offset
The data transmission offset is used to prevent several MRL-7 from sending their data to a server at the same time by setting different transmission offsets for every data logger. When the transmission offset is set to “00:00:00” the data will always be transmitted at “full” minutes (when the transmission interval is also set to “full” minutes, e.g. “00:05:00”).
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 00:01:09 (default)
I-C-D Content
I-C-E FTP server name
I-C-F FTP username
Setting Description
“blank” (default) Defines the user name for the FTP server account.
I-C-G FTP password
Setting Description
“blank” (default) Defines the password for the FTP server account.
Setting Description
data (default) To be set for data transmission
camera To be set for camera pictures transmission
Setting Description
“blank” (default) Defines the FTP server address / name to which the data are sent. Host names or IP addresses can be used.
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I-C-H FTP directory
Setting Description
“blank” (default) Defines the FTP subdirectory where the data is saved. When this setting is left empty, the data are saved in the FTP root directory.
I-C-I FTP port
Setting Description
“21” (default) Defines the FTP server port.
I-C-J FTP mode
Setting Description
“active” or “passive” (default)
Defines the FTP server mode (active or passive).
I-C-K HTTP server name
In case a host name is used the network provider has to provide a DNS as standard.
I-C-L HTTP path
Setting Description
“blank” (default) Defines the HTTP request/URL/script via which the data are saved.
I-C-M HTTP port
Setting Description
“80” (default) Defines the HTTP server port.
I-C-N HTTP cam chan
The parameter “cam chan” is only applicable for HTTP servers.
To change this setting, the data transmission content (see chapter I-C-D) must be set to “camera”.
The parameter “cam chan” is independent from the numbers of the measurement values as in chapter G “Measurements, table”. Data (measurements) and camera images are handled completely separately by the MRL-7.
Setting Description
“blank” (default) Defines the HTTP server address / name to which the data are sent. Host names or IP addresses can be used.
Setting Description
“1” (default) Camera channel – it defines the HTTP camera channel for the images of a camera attached to the logger, which are sent to the SOMMER MDS server (measured data server). The “cham chan” number has to match the image channel in the SOMMER MDS.
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I-D Data transmission 2
See chapter I-C “Data transmission 1” for details.
The only difference is the default value for “Data transmission offset”.
I-E Data transmission 3
See chapter I-C “Data transmission 1” for details.
The only difference is the default value for “Data transmission offset”.
I-F NTP synchronisation time
Defines the time at which the internal clock is synchronised with the timeserver time.
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 02:08:43 (default)
I-G NTP server
Setting Description
“blank” (default) Address of the NTP server (timeserver).
I-H NTP port
Setting Description
“123” (default) Port of the NTP server (timeserver).
I-I NTP timezone
With this setting the local time zone can be defined via an offset related to the UTC time.
Unit Seconds (sec.) Seconds (sec.)
Value range -43200 … 43200 3600 (default)
I-J Background function
Setting Description
off The MRL-7 is not set to accept remote connections
time window The MRL-7 is set to accept CSD calls (if 2G) in the set time frame (see chapter I-K and chapter I-L).
time wi. + IP call (default)
The MRL-7 is set to accept CSD calls (if 2G) in the set time frame and checks periodically for IP call requests.
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Setting Description
Time wi. + socket The MRL-7 is set to accept CSD calls (if 2G) in the set time frame and listens on its IP address with port 4646 – direct connection via internet.
I-K Standby, start time
The standby launch time defines the daytime when the MRL-7 starts to be available for remote communications (CSD calls, IP calls).
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 08:00:00 (default)
I-L Standby, duration
The standby duration time defines how long the MRL-7 is available for remote communications (CSD calls, IP calls) and socket.
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 01:00:00 (default)
I-M IP Call server
Setting Description
“mds.sommer.at” (default)
IP call server address / name.
I-N IP Call port
Setting Description
“4647” (default) The port via which the IP call server is reachable.
I-O IP Call interval
Defines the interval within the set standby time frame (see chapter I-K and chapter I-L), when the MRL-7 shall check if there are any IP call requests to the logger.
I-P E-Mail/SMTP
Settings of the MRL-7 to send out e-mails to be configured by the user according to its individual e-mail server details.
Unit hh:mm:ss hh:mm:ss
Value range 00:01:00 … 00:05:00 00:01:00 (default)
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I-P-A E-Mail/SMTP
I-P-B sender
Setting Description
“blank” (default) E-mail address of the MRL-7 as the sender (e.g. [email protected])
I-P-C username
Setting Description
“blank” (default) User name to access e-mail server account (if applicable/requested by individual server settings)
I-P-D password
I-P-E Port
J Technics
Technics Unit
A Language/Sprache english/englisch
B Decimal character dot
C Additional settings
D Additional timings
E Com 1 protocol
F com 1
G RS485-2
H SDI-12 bus mastering
I ANALOG setup
J Camera
J-A Language/Sprache
Setting Description
“german/deutsch” Select to set the device menu language to German.
Setting Description
“blank” (default) Name / address of the e-mail server used by the MRL-7 to send out e-mails (e.g. mail.samplename.at).
Setting Description
“blank” (default) Password to access e-mail server account (if applicable/requested by individual server settings)
Setting Description
“25” (default) Port number of e-mail server port
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Setting Description
“english/englisch” (default)
Select to set the device menu language to English.
J-B Decimal character
Setting Description
“comma” Select to set the “,” as decimal character.
“dot” (default) Select to set the “.” as decimal character.
J-C Additional settings
J-C-A Sommer ID
The SOMMER ID is used to define stations with the software “Commander”. For more information, please see the Commander manual.
By default the SOMMER ID is set to the device’s serial number.
SOMMER suggests not to change the SOMMER ID except if a damaged MRL-7 device is replaced by a new MRL-7. In such a case it can be reasonable to change the SOMMER ID of the replacement device to the SOMMER ID of the original logger in order to guarantee a trouble-free archiving.
Setting Description
“serial number” SOMMER ID
J-C-B Block size, data load
The block size defines how much data is transferred with one communication block (only applicable when transferring data via the serial interface).
Unit Byte Byte
Value range 50 … 250 250 (default)
J-C-C Internal low volt. disconnect
The batteries of the MRL-7 are protected from deep discharge. In case the battery voltage drops below the set limit, the MRL-7 is switched off automatically.
The set limit depends on the used batteries. See the battery data sheet for more information.
Attention An incorrect value in this parameter field can seriously affect the device operation!
Unit V V
Value range 5.0 … 11.0 9.5 (default)
J-C-D SommerXF starts with BOM
The BOM (Byte Order Mark) is a special character outputted when the MRL-7 storage is read out.
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Setting Description
“on” (default) BOM is outputted.
“off” BOM is not outputted.
J-C-E Exposure lock
With this setting the option to display measured values on the MRL-7 device display can be switched on and off.
Access code: To enter the access code, press the key sequence 2x followed by 2x
.
Attention: As long as the display is active during the ongoing session, the entered access code unlocks all system settings of the logger.
J-C-F LCD, Contrast
With this setting the display contrast can be set.
Setting Description
“weak” (default) Lowest contrast setting
“base” Base contrast setting
“medium” Medium contrast setting
“high” Highest contrast setting
J-C-G LCD, Brightness
The MRL-7 has an integrated ambient light sensor that is used to automatically adjust the display brightness.
When the measured ambient light is less than specified in this setting the display backlight brightness is automatically adjusted (three different levels) to a suitable level. When the measured ambient light exceeds the setting value, the display backlight is switched off completely.
Unit lm lm
Value range 0 … 3000 40 (default)
J-C-H Windspeed measurement duration
This value defines the period of time to measure the wind speed.
Setting Description
“off” (default) Measured values are displayed.
“display” Measured values are displayed only after access code is entered.
“display + data” Measured values are displayed only after access code is entered. Additionally, downloading data to a connected flash drive requires entering the access code.
Unit ms ms
Value range 500 … 2000 1000 (default)
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J-D Additional timings
J-D-A Sum, reset time
Defines the time at which accumulated sums are reset to “0”.
Attention: This applies to all measurement values using the “Sum” function.
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 07:00:00 (default)
J-D-B Occasional storage interval
Defines the storage interval of “special” measurement values.
This applies to all “SYS” measurement values.
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 00:01:00 (default)
J-D-C Sync date (last)
Every time the device date is updated manually (via Commander) the current date is automatically saved for the purpose of documentation.
Unit YYYY-MM-DD YYYY-MM-DD
Value range 2000-01-01 … 2199-12-12 production date (default)
J-D-D Sync time (last)
Every time the device time is updated manually (via Commander) the current time is automatically saved for the purpose of documentation.
Unit hh:mm:ss hh:mm:ss
Value range 00:00:00 … 23:59:59 production time (default)
J-D-E min. Hold On message
The period of time set in this menu defines how long a measurement value’s trigger condition for the message has to be unfulfilled (the limit value has to be exceeded/deceeded) before the trigger condition status ends again.
Example: “min. Hold On message” setting = 5 the trigger condition has to be exceeded/deceeded for five consecutive minutes
Unit Minutes (min.) Minutes (min.)
Value range 0 … 180 5 (default)
J-D-F max. Hold On message
By using this option, the MRL-7 can be configured to send multiple messages in a user defined interval as long as a measurement value’s trigger condition is fulfilled still.
Example: “max. Hold On message” setting = 120 a further message is sent after 120 minutes from the beginning of the trigger condition.
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Setting “0” minutes equals to deactivate this function.
J-E Com 1 protocol
This submenu defines the protocol settings for the RS-232 interface of the MRL-7.
Com 1 protocol Unit
A Device number 0
B System key 0
C Output protocol (OP) type SOMMER
D Output (MO) time just per command
E MO wake-up sequence prefix
F MO prefix holdback 300 ms
J-E-A Device number
Device number assigned to the MRL-7 in the RS-232 bus.
Value range 0 … 98 0 (default)
J-E-B System key
System key assigned to the MRL-7 in the RS-232 bus.
Value range 0 … 99 0 (default)
J-E-C Output protocol (OP) type
Two different measurement output protocols are available for the RS-232 port.
Setting Description
SOMMER (default)
SOMMER Bus Protocol
standard Standard protocol
J-E-D Output (MO) time
By default, the measurement results are outputted via the RS-232 interface and are available to be retrieved via SDI-12 commands after a measurement was completed. However, it is possible to configure the MRL-7 to output the results only when a command is issued or when a measurement result is saved.
Setting Description
just per command (default)
Measurement results are only outputted when requested with commands (RS-232 or SDI-12).
measured automatic
Measurement results are outputted automatically after a measurement was completed.
Unit Minutes (min.) Minutes (min.)
Value range 0 … 120 0 (default)
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Setting Description
storage automatic Measurement results are outputted after a measurement result was saved by the MRL-7.
J-E-E MO wake-up sequences
In case a connected device records the MRL-7 output strings it might be required for this device to receive a sync, prefix or both before the measured values can be recorded.
Setting Description
off No wake-up sequence is used.
sync A sync is issued prior to the output string.
prefix (default) A prefix is issued prior to the output string.
prefix & sync A prefix and sync are issued prior to the output string.
J-E-F MO prefix holdback
J-F Com 1
This submenu defines the connection settings for the RS-232 interface.
Com 1 protocol Unit
A Baudrate 115200
B Minimum response time 10 ms
C Flow control RTS-CTS
J-F-A Baudrate
Baud rate for the RS-232 interface.
Value range 1200 … 115200 115200 (default)
J-F-B Minimum response time
Unit ms ms
Value range 0 … 2000 10 (default)
J-F-C Flow control
Unit ms ms
Value range 0 … 5000 300 (default)
Setting Description
off No flow control is activated
XON-XOFF XON-XOFF blocking is active
RTS-CTS (default) RTS-CTS is active
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J-G RS485-2
This submenu defines the connection settings for the RS-485 interface.
RS-485-2 Unit
A Baudrate 9600
B Parity, stop bits no par., 1 stop
C Minimum response time 0 ms
D Transmitter warm-up time 10 ms
E Flow control XOFF-XON blocking
F Sending window 300 ms
G Receiving window 300 ms
H Trig, polling on
I Trig, timeout 70 sec
J Trig, sleep while timeout on
K Network scan extension on
L Transparency to RS485-2
Attention: The settings of the MRL-7 must correspond with the settings of the connected sensor(s) to guarantee smooth operation.
J-G-A Baudrate
Unit Bd Bd
Value range 1200 … 115200 9600 (default)
J-G-B Parity, stop bits
Setting Description
no par, 1 stop (default)
no par., 2 stop
even par, 1 stop
odd par, 1 stop
J-G-C Minimum response time
Unit ms ms
Value range 0 … 2000 0 (default)
J-G-D Transmitter warm-up time
Unit ms ms
Value range 0 … 2000 10 (default)
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J-G-E Flow control
Setting Description
Off Flow control is deactivated.
XOFF-XON blocking (default)
Flow control is activated.
J-G-F Sending window
Defines the time span during which commands are sent via the RS485-2 interface.
Unit ms ms
Value range 50 … 5000 300 (default)
J-G-G Receiving window
Defines the time span during which commands are received via the RS485-2 interface.
Unit ms ms
Value range 50 … 5000 300 (default)
J-G-H Trig, polling
Setting Description
off Continuous polling of measurement values – mode is deactivated.
on (default) Continuous polling of measurement values – mode is activated.
J-G-I Trig, timeout
Defines the time, the MRL-7 is waiting until expected commands/answers are received via the RS485-2 interface.
Unit sec sec
Value range 3 … 250 70 (default)
J-G-J Trig, sleep while timeout
To save on power consumption the MRL-7 can switch off the RS-485 interface until a measurement result is available. If set to “on” the connected sensor (e.g. RQ-30) must send a “Sync” command to reactivate the RS-485 interface so that it can record the output string sent by the sensor.
Setting Description
off
on (default)
J-G-K Network scan extension
When activated the network scan extension enables detecting connected SOMMER sensors (e.g. RQ-30) with Commander. The parameters of detected SOMMER devices can be parameterised with Commander.
Setting Description
off Detecting SOMMER devices connected via RS485-2 is deactivated.
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Setting Description
on (default) Detecting SOMMER devices connected via RS485-2 is activated.
J-G-L Transparency to RS485-2
This menu item is available only via the terminal menu (see 9.1 Changing parameters via a terminal).
When this menu item is selected commands and responses can be sent and received directly via the RS485-2 interface of the MRL-7.
This feature can be useful to adjust the device settings of a connected RS-485 sensor.
J-H SDI-12 bus mastering
SDI-12 bus mastering Unit
A Max. measurement duration 20 sec
B Sensor search
C Change sensor address
D Ask for a sensor address
J-H-A Max. measurement duration
Defines the maximum time available for requesting and receiving data from SDI-12 sensors. If no answer is received within this period of time, the logger stores an “empty” value instead of the measured value.
Unit sec. sec.
Value range 0 … 250 20 (default)
J-H-B Sensor search
This menu item is available via the terminal menu only. Please see chapter 9.1 for more information.
When selected a search for all available SDI-12 sensors connected to the bus is performed and the result is outputted (SDI-12 command “?!”)
J-H-C Change sensor address
This menu item is available via the terminal menu only. Please see chapter 9.1 for more information.
When selected the address of a sensor in the SDI-12 bus can be changed (SDI-12 command “aAb!”).
J-H-D Ask for a sensor address
This menu item is available via the terminal menu only. Please see chapter 9.1 for more information.
J-I ANALOG setup
ANALOG setup Unit
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A 5V sensor supply off
B 12V sensor supply off
C Extended supply off
D Switch usage off
E Warm-up time 0 sec
F ADC - conv. rate 62 Hz
G ADC filter off
H AN3 (N) type voltage 2.5
I AN4 (D) type voltage 2.5
J-I-A 5V sensor supply
With this setting the supply voltage provided at the analogue inputs can be set.
Setting Description
“off” (default) No sensor supply voltage is outputted.
“switched” The sensor supply voltage is set to 5V and is outputted during measurements only (max. 100mA).
“always on” The sensor supply voltage is set to 5V and is outputted at all times (max. 100mA).
J-I-B 12V sensor supply
With this setting the supply voltage provided at the analogue inputs can be set.
Setting Description
“off” (default) No sensor supply voltage is outputted.
“switched” The sensor supply voltage is set to 12V and is outputted during measurements only (max. 200mA).
“always on” The sensor supply voltage is set to 12V and is outputted at all times (max. 200mA).
J-I-C Extended supply
With this setting the extended supply voltage/current can be set.
This voltage/current is outputted when an analogue measurement is performed. The set warm-up time (see J-I-E) applies.
Setting Description
“off” (default)
“2.5V” 2.5V are outputted via the “2.5V Ref Out” pin (see 3.5 Pin description)
“0.5mA” 0.5mA are outputted via the “CurrH” pin (see 3.5 Pin description)
“2.5V + 0.5mA” Both aforementioned reference values are outputted
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J-I-D Switch usage
With this setting connecting the sensor supply voltage of the MRL-7 through via the switches (SW1, SW 2 and SW3) can be de/activated (see also chapter 3.5).
Setting Description
“off” (default) The sensor supply voltage is not connected through via the “Switch Out” pin.
“1” The sensor supply voltage is outputted via the SW1 (switch 1 pin) during active measurements.
“2” The sensor supply voltage is outputted via the SW2 (switch 2 pin) during active measurements.
“3” The sensor supply voltage is outputted via the SW3 (switch 3 pin) during active measurements.
J-I-E Warm-up time
The “Warm-up time” is the period of time required to receive valid measurement results from connected sensors.
Unit sec. sec.
Value range 0 … 250 0 (default)
Example: A sensor connected to one of the analogue inputs needs to be powered on for 10s until correct measurement values are outputted. The analogue sensor’s power is supplied via the 12V sensor supply line from the MRL-7.
The “Warm-up time” is therefore set to (minimum) 10s.
J-I-F ADC – conv. rate
Defines the sampling rate of the analogue inputs.
Unit Hz Hz
Value range 2 … 250 62 (default)
J-I-G ADC filter
By default the ADC filter is set to “off” so one measurements per analogue input is performed and outputted.
When set to any of the three remaining options three measurements of all analogue inputs are performed in sequence. Depending on the ADC filter setting, the results are filtered and a single value is outputted/stored.
When any of these options is selected please consider that getting measurement results will take longer. The measurement interval/frequency is defined via the “ADC – conv. rate” (see chapter J-I-F).
Setting Description
“off” (default) One measurement is performed and no filter is applied.
“minimum of 3” Three measurements of the analogue inputs are performed and the lowest measurement result is outputted.
“medium of 3” Three measurements of the analogue inputs are performed and the medium value of those measurement results is outputted.
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Setting Description
“mean of 3” Three measurements of the analogue inputs are performed and the mean value of those measurement results is outputted.
J-I-H An3 (N) type
Analogue input AN3 can be configured to measure resistors greater than 2000 ohm or a connected NTC (resistor with Negative Temperature Coefficient).
Setting Description
“voltage 2.5” (default)
Standard analogue input: Measures voltages of 0V … 2.5V.
“NTC” An NTC is measured and the resistance is outputted.
“R meas > 2k” A resistor greater than 2000 ohm is measured and the resistance is outputted.
J-I-I An4 (D) type
Analogue input 4 can be used for a set of predefined applications which are selected with this setting.
Setting Description
“voltage 2.5” (default)
Standard analogue input: Measures voltages of 0V … 2.5V.
“voltage 0.3” High-resolution voltage measurement for up to 0.3V.
“R meas > 1k2”” A resistor with more than 1200 ohm is measured and the resistance is outputted.
“R meas < 1k2” A resistor with less than 1200 ohm is measured and the resistance is outputted.
“PT1000” Preconfigured for connecting a PT1000 temperature sensor.
J-J Camera
A camera (web cam) is connected via the RS-485 interface. This chapter describes the available camera parameter settings.
Camera Unit
A switch off
B Warm-up time 30 sec
C Night recognition on
D View
J-J-A switch
Setting Description
“off” (default) To be set, if the camera does not need a power supply by the MRL-7.
“1” Camera is connected to switching output 1.
“2” Camera is connected to switching output 2.
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Setting Description
“3” Camera is connected to switching output 3.
J-J-B Warm-up time
The time, before the camera is able to take a picture.
Unit sec sec
Value range 0 … 120 30 (default)
The warm up time can only be set if the camera is supplied to a switching output.
J-J-C Night recognition
To safe battery, the MRL-7 can control the camera to prevent it from taking pictures in the darkness (e.g. during the night).
Setting Description
“off” Function is deactivated. The camera can always take pictures.
“on” (default) Function is active. The camera does not take pictures during the night.
Only applicable if the MRL-7 is power supplied by solar panel.
J-J-D View
If this button is pressed, the camera is activated and an image (in JPG file format) is displayed in the Commander. (In the terminal mode the image is shown as binary data code.) The image is also stored automatically at the default location of downloaded data files (C:\Users\Public\Documents\Sommer\Data\).
K Special functions
The special functions are either available by pressing the provided button (e.g. item A, B, H and I) or via the terminal menu.
See chapter 9.1 “Changing parameters via a terminal” for more information.
Special functions
A Device status
B View setup
C Continuous measurement mode (tempo.)
D Inspection, nominal values
E Inspection, start process
F Set factory default
G Temp. load factory default
H Relaunch program
I Replace program
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K-A Device status
Outputs the current device status.
Example of device status output:
Device status
Device: MRL-7
Software version: 1_19r00
Miu-OS version 4_06r00
Setup version 2_06r04
Serial number 00000000
System advice codes: 0x0000 0x0000 0x0000 0x0000
Date (YYYY,MM,DD) 2017-04-03
Time 10:33:47
Modem, IMSI Nr.: 232018831215087
Modem, signal qual.: 32,0 2G
IP address:
K-B View setup
Selecting this menu item causes a list of all device settings to be outputted. The list can be recorded with Commander. For more information, please see the Commander manual.
K-C Continuous measurement mode (tempo.)
This special measurement mode was implemented to recognize changes in measurement values easier and more quickly when testing a setup at a measurement site. The continuous measurement can also be activated via the MRL-7 keyboard (see chapter 5.6 for more information).
Selecting this menu item activates a continuous measurement mode. When enabled measurements are performed continuously in the shortest possible interval. In addition, the sensor supply voltages are always outputted and saving asynchronous measurement values (e.g. observer input etc.) is disabled.
The continuous measurement mode is disabled automatically after 3 minutes.
K-D Inspection, nominal values
List of internal MRL-7 nominal values that are used for an automatic testing during the production process of the logger.
K-E Inspection, start process
Starts an automatic testing of the internally generated voltages and of the analogue inputs.
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To be able to perform this testing a specific testing-adapter has to be connected to the MRL-7. This testing-adapter can be purchased from SOMMER Messtechnik at extra costs.
K-F Set factory default
Menu item to set all MRL-7 device parameters to their default values (requires user confirmation).
K-G Temp. load factory default
Menu item to temporarily set all MRL-7 device parameters to their default values. When the MRL-7 is restarted or the terminal menu exited and then reopened the previously set parameters are restored.
This feature is meant to be used as a reference of all default values in case no other documentation (e.g. this manual) is available at a measurement site.
K-H Relaunch program
With this menu item the MRL-7 firmware can be restarted. The boot process is the same as if the device’s supply was removed and reconnected.
K-I Replace program
With this menu item the MRL-7 firmware can be restarted. The boot process is customized to better support performing remote firmware upgrades (boot loader time extended).
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8. Technical specifications Technical data are subject to change
Table 8: Technical specifications
Inputs 4 x analogue inputs 0...2,5 V (one differential input)
2 x Counter inputs
1 x Wind speed
1 x Wind direction (same as counter 2)
1 x RS-485 (SOMMER-Bus protocol)
1 x SDI-12 (MRL-7 as master)
1 x Observer input
Outputs 1 x RS-232: 1200...115200 Baud (ASCII protocol)
1 x USB
1 x Bluetooth
Modem 2G / 3G (optionally 4G)
Total of 3 FTP / HTTP servers
Data retrieval and parametrisation
Functions: IP call, fixed IP, time-synchronisation
Power supply Internal battery (MRL-7B only): 12 V / 4 Ah
Deep discharge protection for internal batteries
Supply voltage: 6 to 30 VDC
Reverse voltage protection
Overvoltage protection
Solar panel supply: max. 40 W / 12 V
Energy consumption * Standby: < 0.6 mA
Normal: < 23.0 mA
Area of application Operating temperature: -30 °C to +60 °C
Storage temperature: -40°C to +60°C
Storage Humidity: 10 to 90 % rH
Housing Material: Anodized aluminium
Dimensions (W x H x D):
MRL-7: 180 x 150 x 60 mm
MRL-7B: 180 x 150 x 90 mm
Installation: four mounting holes
Protection type IP 67
* … Energy consumption measured with a supply voltage of 12 VDC. Sensors supplied via the MRL-7 can increase power consumption.
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9. Appendix
9.1. Changing parameters via a terminal
The main menu is opened by entering three question marks ??? in the terminal program.
The terminal menu is available via all connection types (serial connection, IP call, Bluetooth …).
Attention: Do not enter a “carriage return” after inputting ???.
Fig. 38: Main menu in terminal mode
The menu items are accessed by entering the menu key displayed left of the menu item. Either submenus are opened or the specific parameter is displayed with its corresponding unit. Changes are verified with Enter, editing is aborted with Esc. Sub menus are closed with X.
The menu is not case sensitive. When the main menu is closed, the sensor starts the measurement mode and returns the message “Init done!”.
9.2. Error messages
PLEASE NOTE: Parameterconflict (view manual)!
This message is outputted when
…for example the parameter “Switch usage” in the menu “ANALOG setup” (see chapter J-I-D) and the parameter “switch” in the menu “Camera” (see chapter J-J-A) are set to the same switch number (e.g. “1”).
When the above configuration example is identified, the parameter changed last will be set as defined by the user and the conflicting parameter is automatically set to “off”.
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Reason: It is not possible to use the same switch number for two different parameters (purposes).
Switches can be selected (parameterised) at the different menu chapters “H Messages, table(when selected message type “switch”), “J-I-D Switch usage” for the analogue setup and “J-J-A switch” as of the camera settings.
…the set “Measurement interval” (see chapter C) is shorter than the set “Trig, timeout” (see chapter J-G-I) and/or the “Max. measurement duration” (see chapter J-H-A) and/or the “Warm-up time” (see chapter J-I-E).
The measurement interval is automatically adjusted to the smallest possible value taking into account the other aforementioned parameters.
Reason: The setting of (the shortest possible) measurement and/or (!) storage interval is defined by the measuring process of all sensors connected (via analogue, RS-485 and SDI-12 interfaces) and their measurement duration needed to perform a measurement. Therefor the measurement (and/or storage) interval can never be shorter than the aforementioned intervals of one or multiple sensors (see also chapter “2.2 Measurement and data storage concept”).
Example: The supply voltage of a connected analogue sensor must be switched on 60 seconds before a correct measurement result is outputted. The warm-up time is therefore set to 60 seconds. The MRL-7 measurement interval was previously set to 20 seconds.
When the (changed) parameters are transferred (uploaded / synchronised) to the MRL-7, the error message is outputted and the measurement interval is automatically set to 60 seconds.
DIRECTIVE: Please don't forget to change serial counterpart too!
This message is outputted when the baud rate set via parameter J-F-A Baudrate is changed.
Please note the new setting and adjust the previously defined “Connection” (see 6.2.1 Defining a local connection with the MRL-7) accordingly or create a new “Connection”.
PLEASE NOTE: Maybe difficult interpretation of archive data!
This message is outputted when the „Identifier“ (see chapter G Measurements, table) and/or the unit of more than one defined measurement is changed.
The reason for outputting this message is that because of such changes the ordering of measurement values can change. This makes interpreting the archived data more difficult. There are three options available to the user when this message is outputted:
Accepting the warning because the changes made have desired effects only (e.g. correcting the “Identifier” of a measurement value).
Creating a new station (or changing the current station number) to make sure that the changes made have no negative impact on previously created archives.
If this option is chosen SOMMER suggests deleting all data stored on the MRL-7 to prevent previously archived data from being added to a new (and additional) archive.
Deleting the „old“ archived data (or shifting it to a new file storage location) locally on the used computer and also erasing all data stored on the MRL-7 to reset the device to a “new” station.
PLEASE NOTE: An old archive pointer has been replaced!
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This message is outputted only when more than 16 different computers were used to archive data collected with the currently connected MRL-7. In almost all cases this message can be ignored.
To keep the archive system “clean” SOMMER suggests appointing someone who is mainly responsible for the station(s). This person can synchronize all previously used archives and then delete all archive pointers (in Commander select “Extra”/”Data”/”Delete all data pointers).
Mistake: Please just enter valid values!
This message is outputted when characters are entered (e.g. in terminal mode) that are not allowed / not applicable for the actual parameter or setting (e.g. a letter is entered although only numbers are possible).
Mistake: Please, just enter menu choice characters!
This message is outputted when characters are entered (e.g. in terminal mode) that are not part of the contained menu choice of characters (e.g. the number “3” is entered although only the numbers “1” and “2” are able to be entered as part of the menu choice).
9.3. Index of tables
Table 1: SDI-12 example commands and answers ..................................................................... 4
Table 2: Display menu structure ................................................................................................. 6
Table 3: Interface types and features ......................................................................................... 7
Table 4: Analogue inputs ............................................................................................................ 7
Table 5: Supply voltage outputs ................................................................................................. 8
Table 6: MRL-7 pin assignment ................................................................................................ 19
Table 7: ***** Settings ***** ....................................................................................................... 27
Table 8: Technical specifications .............................................................................................. 74
9.4. Index of figures
Fig. 1: MRL-7 key functions and features ................................................................................... 2
Fig. 2: Analogue measurement ................................................................................................... 3
Fig. 3: RS-485 measurement...................................................................................................... 4
Fig. 4: SDI-12 measurement ...................................................................................................... 4
Fig. 5: Example storage interval ................................................................................................. 5
Fig. 6: SDI-12 example configuration .......................................................................................... 9
Fig. 7: MRL-7 ........................................................................................................................... 10
Fig. 8: MRL-7B ......................................................................................................................... 10
Fig. 9: MRL-7 housing, dimensions (in mm) ............................................................................. 11
Fig. 10: MRL-7B housing, dimensions (in mm) ......................................................................... 11
Fig. 11: MRL-7 covering strips .................................................................................................. 12
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Fig. 12: MRL-7 screws ............................................................................................................. 12
Fig. 13: Opening the housing of the MRL-7 .............................................................................. 13
Fig. 14: Holes for Mounting ...................................................................................................... 13
Fig. 15: Lid of the MRL-7 from inside ....................................................................................... 14
Fig. 16: MRL-7 pin description ................................................................................................. 18
Fig. 17: MRL-7 USB Connector ................................................................................................ 23
Fig. 18: MRL-7 keyboard .......................................................................................................... 25
Fig. 19: Setting the “Expert” mode in the software “Commander” ............................................. 29
Fig. 20: USB/RS-232 converter ................................................................................................ 30
Fig. 21: Connecting the USB/RS-232 converter ....................................................................... 30
Fig. 22: Download Parameters ................................................................................................. 39
Fig. 23: List of parameters ....................................................................................................... 40
Fig. 24: New Station ................................................................................................................. 40
Fig. 25: Station no. and SOMMER ID ....................................................................................... 41
Fig. 26: Station no. and SOMMER ID ....................................................................................... 41
Fig. 27: Assigning connections to a station .............................................................................. 41
Fig. 28: Connection details ....................................................................................................... 42
Fig. 29: Data archive ................................................................................................................ 42
Fig. 30: Saving a station........................................................................................................... 42
Fig. 31: Connecting to a station ................................................................................................ 43
Fig. 32: Downloading stored data ............................................................................................. 43
Fig. 33: Downloading stored data manually.............................................................................. 44
Fig. 34: IMSI number ............................................................................................................... 44
Fig. 35: Station no. and SOMMER ID ....................................................................................... 45
Fig. 36: IP call connection ........................................................................................................ 45
Fig. 37: APN list ....................................................................................................................... 54
Fig. 38: Main menu in terminal mode ....................................................................................... 75
Thanks for using a product made by
SOMMER Messtechnik GmbH.
www.sommer.at
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