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5  Communication Connection
5.1  Cabling of CPU module and communication module
RJ45 cable connection
  Insert the cable connector into the RJ45 port of the communication module until 
you hear a click sound.
Figure 4 Cable connection diagram
  Removal: press the release tab of the connector to pull out the connector and 
module horizontally.
Requirements for securing communication cable
To protect the communication cable from any tension and to ensure 
communication, as shown below: