Siemens SIMATIC S7-1200 Manual page 279

Connection examples
The following illustration shows the configuration for IO-Link operating mode (3-wire and
5-wire), where n = port number:
The following illustration shows the configuration for DI operating mode (2-wire and 3-wire),
where n = port number:
The following illustration shows the configuration for DQ operating mode (2-wire and 3-wire),
where n = port number:
Detailed information on using and configuring the SM 1278 4xIO-Link Master
For detailed information on the SM 1278 4xIO-Link Master, including diagrams, connection,
parameterization, diagnostic alarms and more, refer to the S7-1200 System Manual.
Easy Book
Manual, 03/2014, A5E02486774-AF
IO-Link is easy
12.7 The SM 1278 4xIO-Link Master
279