Maintenance
S7-300 Programmable Controller Hardware and Installation
9-6 A5E00105492-01
Removing a module (SM/FM/CP)
Remove the module as follows:
Step 20-pin front connector 40-pin front connector
1. Switch the CPU to STOP.
2. Switch off the load voltage to the module.
3. Remove the labeling strip from the module.
4. Open the front panel.
Unlock the front connector and remove it.5.
Press down the unlocking
mechanism (5) with one hand, with
the other hand pull out the front
connector at the grips (5a).
Remove the fixing screw from the middle
of the front connector. Pull the front
connector out, holding it at the grips.
6. Undo the module fixing screw(s).
7. Swing the module out.
1
3
5
4
6
5a
Figure 9-1 Unlocking the front connector and removing the module
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