Page 53 of 82 Revision No.: 1.5
11.1 Network Connection
Connecting the External Connection box to Rotem's controllers using
RS-232 Card
Fig. 89: Connection with RS-232 card wiring diagram
The cable between the external connection box and the controllers should be a 3 Wire
Shielded Cable (at leasr 22AWG).
This cable is daisy-chained to all controllers and to the communication line of the
external connection box in the following manner:
The Black wire (COMMON) is connected to the COMMON in the
communication terminal of the controller.
The Red wire, TX in the connection box is connected to RX in the Controller.
The Green wire, RX in the connection box is connected to TX in the
Controller.
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