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Diagnostics and upkeep
5.2 Maintenance
Loading the firmware file
To load a firmware file you require a SIMATIC memory card.
You will find a description of the procedure for loading firmware on the respective page of
Siemens Industry Online Support.
You can recognize that firmware is being loaded by the flashing LEDs of the CM, see section
LEDs (Page 14).
5.2.2
Module replacement
Module replacement
Read the system manual "S7-1200 Programmable Controller"
Prior to installation, connecting up and commissioning, read the relevant sections in the
system manual "S7-1200 Programmable Controller" (refer to the documentation in the
Appendix).
When installing and connecting up, keep to the procedures described in the system manual
"S7-1200 Programmable Controller".
Make sure that the power supply is turned off when installing/uninstalling the devices
The configuration data of the CM is stored on the local CPU. This allows simple replacement
of this communications module when necessary.
When the station starts up again, the new CM reads the project data from the CPU.
40
WARNING
Operating Instructions, 01/2023, C79000-G8976-C245-06
SIMATIC CM 1242-5
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