Siemens S5-135U/155U System Manual page 159

Note
All other jumpers are required for quality testing by the manufacturer. You
must not change these jumper settings.
Removing and
Inserting the
Module
Caution
!
Switch off the power supply before removing or inserting the module.
The basic board and expansion board of the CPU 948 are one unit and must
not be separated.
Insertion Proceed as follows to insert the CPU in the central controller:
Step
Removal
Proceed as follows to remove the CPU:
Step
System Manual
C79000-G8576-C199-06
CPUs, Memory Cards, Memory Submodules, Interface Submodules
Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U PLC from the extreme left
at slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90 clockwise.
5 Secure the upper locking bar.
Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.
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