Process data width
32-byte outgoing (from device to master)
32-byte incoming (from master to device)
Process data type
INT
Parameter data storage in the IO-Link master
Available
IO-Link is an international and manufacturer-independent standardized communication
technology for communicating with sensors (devices) such as sensors and actuators in
an industrial environment (IEC 61131-9).
The IO-Link devices communicate with the superior control systems using an IO-Link
master.
The IO-Link devices (slaves) are connected to the master in a serial, bidirectional
point-to-point connection via an IO-Link interface (port). This arrangement does not
represent a fieldbus. Different variants of IO-Link master are available. The masters
usually consist of remote, superior fieldbus gateways or input cards for the backplane
bus of the control used.
In order for an IO-Link sensor to communicate with the controller, the IO-Link master
and the respective IO-Link sensor must be integrated into the controller. This is done via
the hardware configuration in the engineering tool of the control manufacturer.
To simplify the integration process, SICK provides sensor-specific device description
files (IODD = IO-Link Device Description) for the IO-Link devices.
In addition to process data, the master and device can also exchange device data
(parameters, identification data and diagnostic information) depending on the device.
To use this function, the IO-Link master needs the sensor-specific device description file
(IODD).
Download the device description file from the homepage free of charge:
Not all control system manufacturers support the use of IODDs. If non-system IO-Link
masters are used, the IO-Link sensor can also be integrated manually. This is done by
entering the relevant sensor parameters directly during hardware configuration.
To ensure that the IO-Link sensor can be easily integrated into the control program,
SICK also provides function blocks for many control systems. These function blocks
facilitate, among other things, the reading and writing of the individual sensor parame‐
ters. The devices also support the interpretation of the process data supplied by the
IO-Link sensor.
Download the function blocks form the homepage free of charge:
8.3.1
Service data (ISDU, parameter)
NOTE
The device contains a rewritable flash memory for storing configuration data (parame‐
ters), such as Application Specific Tag, Location and Function Tag, RF field, etc.
Recommendation: Perform permanent writing of configuration data only during commis‐
sioning. The device is not designed for permanent rewriting of configuration data during
operation. Temporary storage is not affected, e.g. data storage (backup/restore) in the
IO-Link master, which takes place in the volatile memory (RAM) of the device.
Make sure to keep the writing of ISDUs as minimal as possible during operation. The
device offers the option of being written with a total of 100,000 bytes. Permanent
storage on the device is also no longer possible.
8
OPERATION
40
O P E R A T I N G I N S T R U C T I O N S | RFU61x IO-Link
8026854//2021-09-01 | SICK
Subject to change without notice
