introduction to io-link - russell smith
TRANSCRIPT
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An Introduction to IO-Link
Russell SmithBalluff Limited
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WHAT IS IO-LINK?
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not another bus system!
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point to point communications protocol from the fieldbus to the sensor and actuator level.
up to
20M
Pulse-width modulated 24V
Baud rates: 4.8 kBit/s (COM1), 38.4 kBit/s (COM2), 230,4 kBits/s (COM3)
Pin Signal Description1 L + 24 Volt
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3 L - 0 Volt
4 C / QIO-Link
communication+ switching signal
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standard - IEC 61131-9network neutral
an open standard
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IO-Link master… acts as a gateway between the IO-Link device and the higher level communication system, such as a fieldbus (Profinet, EtherNet/IP, etc.) or a device-specific backplane bus.
IO-Link device… is the field device with communication capability: sensors, switching devices, valve terminals, RFID devices, indicator lights, etc.
3-core unshielded standard cable – up to 20M long… is the standard interface between IO-Link master and device
IODD and engineering tool… are used to configure and assign parameters to the IO-Link system and devices.
an IO-Link system generally consists of the following basic components:
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IO-Link devices
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many different IO-Link devices are available.
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IO-Link masters
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panel mounted unit with terminals
IP67 field I/O module
additional slice on existing PLC
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WHY IO-LINK?
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easier handling of measurement devices
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traditionally
better
best
lower cost – no analogue card
lower cost vs IE networked device
less wiring effort
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low cost
high density
less addresses
low cost per I/O point – 136 I/O on one IP address
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extensive diagnostics
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available on sensors/devices and sensor hubs
troubleshoot problems quickly
maximise up-time
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• Short circuit – LED for each I/O port• Short circuit does not impair the unit• Sensor/actuator under voltage LED for each I/O port
extensive diagnostics:
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simplify valve manifold wiring
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reduced installation time
reduced cost
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• World´s first combination of IO-Link and Safety
• Communication via one Topology
• Open System on the sensor level
• Connection of the safety IO-Link device to the standard BalluffIO-Link-Master
• Parameterization via PLC
SAFETY OVER IO-LINK
14Balluff GmbH | BN
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PROFISAFE IO HUB
15Balluff GmbH | BN Safety, M. Bristle
&Further features• Profisafe over IO-Link• PLe / SIL CL 3• standardized wiring concept (AIDA)• Diagnostic and Display integrated• CE, TÜV, (UL in preparation)
technical data (extract)• Cycle time: 20 ms• Temperature range: -5°C…55°C• Inputs: 2 pcs.• Safe Inputs: 12 pcs.• Outputs: 2 pcs.• Safe Outputs: 2 pcs.• Sum current (Aktors): 8 A• Sum current (Sensors): 4,8 A
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PORT CONFIGURATION
16Balluff GmbH | BN Safety, M. Bristle
Cable length IO-Link:max. 20 m
(acc. IO-Link Specification)
Cable length Device:max. 30 m
(s. Specification Device)
Cable length UB:max. 30 m
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extends communication
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ERP
MES
SCADA
PLC
Network
Sensors and Actuators
Enterprise Level
Control Level
Management Level
Plant Control Level
Field Level
Sensor / Actuator Level
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HMIparameterisation – std pressure sensor
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HMI
HMIHMIHMIHMI
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Time consuming configuration of 10 – 15 Parameter.(e.g. upper/lower Pressure point, Hysteresis, Time – or Pressure window)
Machine Tools have often more than 10 Pressure sensors
Error prone due to manual entry
Very bad when Sensor failure / Sensor exchange (especially during night shift)
parameterisation – std pressure sensor
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Manualconfiguration
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parameterisation – std pressure sensor
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HMI
HMI
HMI
HMI
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HMI integrated in sensor for set upmeans additional cost.
Expensive high-pressure hydraulichoses
parameterisation – std pressure sensor
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machine tool
Additional cost for protectivehousing for sensors in the machine
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E.g. machine tool
parameterisation – pressure sensor with IO-Link
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PLCFunction-
blocks
Vendor_IDDevice_ID
Param1: 50barParam2: 100barParam3: 200ms
Step 1Identify device
Step 3Get Parameter Set
Step 2Check identity
Step 4Write Parameter Set
parameterisation – pressure sensor with IO-Link
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sensor installed at point of measurement
no expensive measurement cables - use std un-shielded 3-wire standard cables
no protection case
no sensors with HMI but reliable parameterisation via controller and HMI of the machine
decentralised diagnostics for sensors
parameterisation – pressure sensor with IO-Link
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parameter server
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IO-Link V1.1 master
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automated tool changes
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IO-Link inductive couplers fornon-contact signal transmission
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an i4.0 enabler
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ERP
MES
SCADA
PLC
Network
Sensors and Actuators
Enterprise Level
Control Level
Management Level
Plant Control Level
Field Level
Sensor / Actuator Level
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unabated IO-Link success!
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HOW IO-LINK?
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device configuration
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1. controller parameter storage –parameterisation from the PLC using the function block
2. IO-Link master ver 1.1 parameter server
3. PC storage with USB master
4. webserver entry with IO-Link master
5. Manual configuration
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IO-Link master configuration
connect the master and install GSDML file
drag and drop the relevant file
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Drag the appropriate (process data length) IOL input / output byte from the catalogue and name & address the module
IO-Link master configuration
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THANKS FOR LISTENING!