Introduction
An IO-Link system is configured in several steps. In the first step, the master is integrated in the automation system and configured. In the second step, the IO-Link devices are configured.
Integration in the automation system
When using a SIMATIC S7 CPU, use the engineering tool STEP 7, V5.x or STEP 7 (TIA Portal) for configuration.
The IO-Link system is represented by the IO‑Link master in the configuration of the automation system or the fieldbus and integrated with STEP 7 or a GSD file.
The IO-Link master itself can be a field bus node (e.g. ET 200eco PN IO‑Link master) or a part of the modular IO system that is connected to the field bus (e.g. ET 200SP IO-Link master). In both cases, the number of ports, the address range and the module properties are described in STEP 7 or in the GSD file.
Example configuration in STEP 7 (TIA Portal)
The figure below shows a PROFINET configuration with integrated PROFINET devices ET 200SP and ET 200eco PN with IO-Link masters.
In the device view of the PROFINET device, you can:
Parameterize the ports
Specify the input and output address ranges of IO-Link for exchange of cyclic data (process values).
In addition, you can set in the module properties of the IO-Link master how the IO-Link system is to be configured and parameterized.
In doing so, you can select whether or not you also want to work with the S7-PCT configuration tool.
IO data length
To ensure smooth operation, select an IO data length during configuration of the IO-Link master that corresponds at least to the IO data length of all connected IO-Link devices. If necessary, the IO-Link master offers the option of configuring the IO data length for each individual port. In this case, the IO data length must at least correspond to the IO data length of the connected IO-Link device.