Inserting The Front Connector - Siemens SIMATIC S7-300 Hardware And Installation Manual

Maintenance
Removing the Front Connector Coding
If you want to take a "used" front connector to wire another module, you can
remove its coding mechanism:
Simply push out the front connector coding with a screwdriver.
This upper part of the coding key must then be plugged back into the old module.
Putting a New Module into Service
Proceed as follows to put the new module into service:
1. Open the front panel.
2. Reinstall the front connector.
3. Close the front panel.
4. Switch the load voltage back on.
5. Set the CPU to RUN mode again.
Figure 10-4 Inserting the front connector
Behavior of S7-300 after module replacement
After module replacement the CPU switches to run mode, provided no error has
occurred. If the CPU maintains STOP status, you can view the cause of error with
STEP 7 (refer to the STEP 7 User Manual).
10-8
3
2
S7-300 Programmable Controller Hardware and Installation
A5E00105492-02