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5.1.4
Block library for IO-Link (LIOLink)
The current block library for IO-Link (LIOLink) can be used for STEP 7 TIA Portal V16 and higher.
For older STEP 7 versions, the article contains an archive download of an earlier version. The
function block library for IO-Link (LIOLink) provides blocks and PLC data types to enable
communication between the SIMATIC controller and IO-Link master or IO-Link device.
All blocks of the library are compatible with the SIMATIC S7-1200 / 1500 controller and mostly
also with the SIMATIC S7-300 / 400 controller.
Basic blocks
The library contains the following blocks, among others:
• The LIOLink_Device block enables the reading and writing of acyclic data of an IO-Link device
via the S7 program
• The LIOLink_Master block enables the backup (Backup) and restore (Restore) of device
parameters and device settings of an IO-Link master via the S7 program (master exchange
without engineering tool)
Device-specific blocks for simple communication with IO-Link devices
The library for IO-Link is available as download in the Siemens Industry Online Support (SIOS) via
the following link:
Library for IO-Link (LIOLink) (https://support.industry.siemens.com/cs/ww/en/view/82981502)
Note
An application example for using the device-specific blocks for IO-Link can be found on the
Internet (https://support.industry.siemens.com/cs/ww/en/view/90529409).
5.1.5
Replacing an IO-Link device
To replace an IO‑Link device, the devices must be isolated from communication and
disconnected from the power supply. After the connections have been restored and
communication has been resumed, the parameterization can be restored according to the
respective IO‑Link communication specification:
• IO‑Link communication specification V1.0: concerning the LIOLink_Device function block.
• IO‑Link communication specification V1.1: via automatic parameterization under the
ET 200SP
SIRIUS 3RB24 electronic overload relay for IO-Link
Equipment Manual, 07/2022, NEB969165602000/RS-AA/003
Configuring
5.1 Configuring the IO-Link
45
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