Siemens SIMATIC S7-1500/ET 200MP System Manual page 309

Maintenance
14.3 Replacement of I/O modules and front connectors
Procedure
You have already removed the front connector from the module and loosened the wiring. If
you are using the front connector for an analog module, you also need to remove the power
supply element and shield element. Proceed as follows to replace the front connector:
1. Carefully remove the mechanical coding element from the front connector. Take care not to
damage the coding element.
Figure 14-8
Note
The coding elements are dependent on the module type.
2. Insert the removed mechanical coding element into the new front connector.
Figure 14-9
308
Removing the mechanical coding element from the front connector
Inserting the mechanical coding element into a new front connector
Automation system
System Manual, 01/2023, A5E03461182-AK