Siemens Simatic series - Installing and Uninstalling an Expansion Module

SIMATIC Rack PC IL 40 S Expansions
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SIMATIC Rack PC IL 40 SManual
A5E00200171-01
4.4.2 Installing and Uninstalling an Expansion Module
Proceed as follows:
1. Open the housing as described in Section 4.1.2.
2. Remove all connectors from the expansion module and note the assignment.
3. Remove the device for holding down the modules as described in Section 4.4.1.
4. Undo the screws on the slot plate of the module (1).
5. Pull out the module from the slot (2) and note down this slot.
6. Pull the module out of the slot.
7. Proceed in the reverse order to install the new expansion module.
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Figure 4-7 Removal/Installation of an Expansion Module