Siemens Simatic S7-1500/ET 200MP System Manual page 283

Maintenance
14.3 Replacement of I/O modules and front connectors
Procedure
To replace the I/O module, follow these steps:
You have already uninstalled the I/O module.
You can find information on removing the I/O module in section Installing I/O modules
(Page 120).
1. For a new I/O module, use a screwdriver to break out the half of the mechanical coding
element that is designated for the front connector.
Note
The arrangement of the mechanical coding element depends on the module type: Check
the position of the coding element on the front connector before you break out the
matching half from the I/O module.
For a new fail-safe module you must also remove the electronic coding element from the
F-module.
Figure 14-7
2. Insert the existing front connector into the new I/O module (same module type) until your
hear it click into place.
282
Breaking the coding element out of the I/O module
Automation system
System Manual, 12/2017, A5E03461182-AE