Plug in extension module

The extension module is connected to the left-hand side of the basic CPU module via a multi-pin connector.

A maximum of one CX2500-0021 module can be connected to a CX20x3.

Proceed as follows:

1. The left-hand multi-pin connection of a basic CPU module is fitted with a protective cap ex factory. Remove the protective cap from the basic CPU module.
2. Plug the extension module into the left-hand side of the basic CPU module.
Plug in extension module 1:
3. The module audibly clicks into place when the module is flush with the housing of the basic CPU module.
Other modules are plugged in the same way if they are basic CPU modules of type CX20xx. The next step is to install the housing locking clips.