Subzero IoT

Manual

INDEX

S. No. TOPIC PAGE No. 1 INTRODUCTION 1

2 COMMUNICATION SETUP 2

2.1 Communication Setup 2

2.2 Features 2

3 MODULE 3

3.1 User Profile 3

3.1.1 To Add User 3

3.1.2 To Remove User 3

3.1.3 To View Number of Users 3

3.2 Configuration 4

3.2.1 To Add New Device 4

3.2.2 To Remove Device 4

3.2.3 To View List of Device configured 4

3.3 Temperature 5

3.3.1 To get temperature 5

3.4 Indication & Display 5

3.4.1 Indication 5

3.4.2 Display 5

3.5 Settings 5

4 WEB PORTAL 6

4.1 Login 6

4.2 Dashboard 6

4.3 Analytics 9

4.3.1 Save Report 9

4.3.2 Schedule Report 9

4.3.3 Chart 10

4.4 User Management 11

4.4.1 Roles 11

4.4.2 User 11

4.5 Device Management 12

4.5.1 Region 12

4.5.2 Add Device 12

4.5.3 Device Assign 12

Subzero IoT 1

CHAPTER 1

INTRODUCTION

Subzero IoT module can connect to any of the RS-485 based sub-zero controller or act as standalone controller and

send data to the cloud server. The data stored can be viewed as per customer requirement on dashboard. SZ-IoT

module is a customized solution for online monitoring of RS-485 MODBUS data. SZ-IoT module mainly consist of GSM

module and microcontroller-based control circuit. SZ-IoT module supports generic MODBUS RTU protocol for data

acquisition and uses MQTT protocol to communicate with IT application database on cloud.

Subzero IoT 2

CHAPTER 2

COMMUNICATION SETUP

2.1 COMMUNICATION SETUP

The following figure shows the communication setup for Subzero IoT module.

SZ-IoT module allows to connect with sensors and devices that support Modbus RTU protocol for I/O monitoring. The

ability to connect with Modbus RTU slave devices enables the flexibility and scalability for system implementation and

allows to meet various requirements of the applications from the clients.

Please check to be sure that you have received all components and that there is no damage. If you are missing any

parts, please notify PVR Controls or your local dealer immediately. Any shipping damage must be reported to the

carrier. Save the packing container, if possible, for future use when returning the controller to PVR Controls or an

authorized dealer for service.

2.2 FEATURES

The following are the features of Subzero IoT Module:

i. Power Supply: 5V / 2A. ii. Communication Protocol: RS-485 ModBus RTU, MQTT.

iii. Read on-board sensor values. iv. Indications v. GSM Communication

vi. OLED Display vii. Auto Report Generation

viii. Data Logging

RS-485 +

RS-485 -

Subzero IoT 3

CHAPTER 3

MODULE

3.1 USER PROFILE

3.1.1 To Add User System admin can add new user using the following code:

*1*AdminNos*ContactNumber# …. (Refer Fig 1) For Example, If the System admin wants to add 2 numbers: “+91XXXXXXXXXX” & “+91YYYYYYYYYY”. Then the system admin needs to,

I. First SMS (To add +91XXXXXXXXXX)

SMS Content will be *1*1*+91XXXXXXXXXX#

II. Second SMS (To add +91YYYYYYYYYY)

SMS Content will be *1*2*+91YYYYYYYYYY#

3.1.2 To Remove User

System admin can add remove user using the following code:

*3*AdminNos# …. (Refer Fig 2) For Example, If the System admin wants to remove 5th user, SMS content will be: *3*5#

Note: To add/remove each user System Admin needs to send SMS individually for that particular user.

3.1.3 To View Number of Users

System admin can view the number of users using the following code:

*4* …. (Refer Fig 3)

It will revert all the users registered. Note: Only 5 users can be added.

Fig. 1

Fig. 2

Fig. 3

Subzero IoT 4

3.2 CONFIGURATION

User can configure the Slave Id and the controller type via touch keys and SMS.

3.2.1 To Add New Device User can add new device, using the following code:

*5*SrNo*DeviceId*DeviceType# …. (Refer Fig 4) For Example, To add 3 devices, User need to send 3 SMS for each device that need to be configured.

First SMS *5*0*1*CRC2052+#

Second SMS *5*1*2*SZ7510C#

Third SMS *5*2*3*CRC1200#

3.2.2 To Remove Device User can remove the device using the following code:

*7*Sr.No# …. (Refer Fig 5)

For Example, From the list of 10 connected device, to remove 8th device Then SMS: “*7*8#”.

3.2.3 To View List of Device Configured User can view the list of devices configured using the following code:

*8* …. (Refer Fig 6)

Fig. 4

Fig. 5

Subzero IoT 5

3.3 TEMPERATURE

3.3.1 To get Temperature User can get the live temperature of the respective controller via SMS.

In order to get the live temperature, User need to SMS the following code:

*2*Sr.No.# …. (Refer Fig 7)

Example: There are 2 devices connected, and want to know temperature of the 1st device via SMS, then User need to SMS the following code:

*2*0# Note: Serial Number starts from 0.

3.4 INDICATION & DISPLAY

3.4.1 Indication There are 5 indicators: RX, TX, Cloud, SMS OUT, SMS IN.

LED STATUS DESCRIPTION

RX

BLINKING

RS-485 Communication established. TX

Cloud ON Connected to cloud

OFF Not Connected to cloud.

SMS IN ON (For 1sec) SMS Received

SMS OUT ON (For 1sec) SMS Sent

3.4.2 Display

OLED is used to display the temperature of connected controllers.

Note:

Each window can display the temperature of 2 controllers only. If there are more than 2 controllers,

user need to press NEXT key to go to the next window to see the temperature of other controllers.

3.5 SETTINGS

User can set the Date & Time using the following SMS code:

*6*YYYYMMDDHHMMD#

Once the date & time is set, User will receive message as “Date & Time Change OK”. (as shown in Fig. 8) For Example, To set 29/11/2019, 17:44, Thursday, SMS content will ie: *6*2019112917445#

Fig. 7

Fig. 6

Fig. 8

Subzero IoT 6

CHAPTER 4

WEB PORTAL

4.1 LOGIN

The user needs to login with the user name & password provided to them by Sub-zero.

Note: If the User forgets the password, User cannot reset it. Password can be reset by Design Engineer only.

4.2 DASHBOARD

Dashboards are the human machine interfaces where controller data is easily visualized and control devices. User can also visualize data of controllers mounted on different locations. i.e There will be dashboards for individual controller as well as can view temperature of different controllers either from same or different locations on single dashboard.

• RS-485 ModBus RTU : It reads Sensor values, Status and all parameters.

• MQTT : User can monitor and control set point of the controller at www.subzeroiot.com using their specific login credentials.

There are 4 tabs in the Dashboard:

i. List View

http://www.subzeroiot.com/

Subzero IoT 7

List View: More

Here we can see status of faults, output and control set point.

ii. Pin

While scheduling reports if we pin to a particular device then we can see the graph in the pin tab otherwise it will remain blank.

Subzero IoT 8

iii. Map

It shows the static region of the device.

iv. Temperature View

In this tab user can view only the room temperatures and coil temperatures for all the controllers added in the configuration.

Subzero IoT 9

4.3 ANALYTICS

Following Image depicts the Analytics window. Here we can view charts, saved reports and create scheduled reports.

4.3.1 Saved Report

i. Select the region, model, device, sensor, duration, sensor functioning & report name. ii. Create the saved report.

iii. User can download the report anytime from this section.

4.3.2 Scheduled Report

The reports are generated automatically and mailed to that particular (as shown in Figure 9) user as per the pre-

requisites. User will receive the mails in .pdf (as shown in Figure 10) or .csv format to their respective mail-Id from

notifications@subzeroiot.com .

Pre-requisites:

i. E-mail id of the user. User need to specify the email id in which he/she wants the copy of the report. The report will be provided over the mentioned email Id.

ii. Schedule: Reported ie, weekly, daily or monthly.

The report is generated either daily or weekly or monthly as per the choice of the user. User need to specify

the schedule (including the time) at which he needs the report at the time of order confirmation.

Note: If mentioned,

• Daily: Report content of last 24 hours will be provided.

• Weekly: Report content of last 1 week will be provided.

• Monthly: Report content of last 1 month will be provided.

mailto:notifications@subzeroiot.com

Subzero IoT 10

4.3.3 Chart

Saved reports/ Scheduled reports will be saved in charts.

Fig. 9

Fig. 10 Fig. 11

Subzero IoT 11

4.4 USER MANAGEMENT

User management describes the ability for administrators to manage user access to various devices & regions. There

are 2 parts – Roles & User.

4.4.1 Roles:

• Assign a name to role. Ie, Admin, Manager, User etc.

• From Permission tab, assign the authorities for the particular domain.

4.4.2 User:

• Select User.

• Assign mail Id.

• Assign Phone number.

• Assign role.

• Alert preference ie, E-mail, notification, SMS.

Subzero IoT 12

4.5 DEVICE MANAGEMENT

Device management is the process of managing the devices added, regions and assign devices depending on the

roles created in user management.

4.5.1 Region • Select the region where the devices are going to be placed.

4.5.2 Add Device • Select the Device Id.

• Rename the device.

• Set frequency as 5 minutes.

• Select the region.

• Save & close.

4.5.3 Device Assign • Select the user.

• Assign the devices.