Siemens simatic ET 200MP - Page 87

Maintenance
9.2 Replacement of I/O modules and front connectors
ET 200MP Distributed I/O System
System Manual, 01/2013, A5E03723484-01
87
,2PRGXOHZLWKVHSDUDWHGFRGLQJHOHPHQW
)URQWFRQQHFWRUZLWKVHSDUDWHGFRGLQJHOHPHQW
Figure 9-2 Coding element in the I/O module / front connector
A coded front connector can be inserted on modules with the same electrical pin
assignment.
Please note the chapter Application planning (Page 31).
Note
If the coding element is changed or removed, it will be possible to insert the front connector
on modules in which the electrical connection is not properly wired.
This can destroy the module and/or the connected sensors and actuators. Even hazardous
plant states are possible.
Do not change the coding element unless you want to use the front connector on a different
module and you change the process wiring accordingly.
Use cases for replacing the coding element
● Replacing an I/O module, e.g. due to a defect or to incorrect assembly
● Replacing a front connector