Chapter 8. Installation and Testing Operation
8-4
6) If communication cable is twisted as the following figure or not connected well, problem can be
occurred in communication.
7) Branch of cable is not allowed.
8) Connection of network through communication cable should not be a closed circuit.
9) When connecting the communication cable with long distance, keep the distance from power
line or inductive noise.
10) Shield-wire should be connected with body of 9 pin connector (Refer to the 4.4.1)
11) If LED operation is abnormal, see ‘chap. 9 Troubleshooting’ of this manual to check the cause
of the error. If the error occurs continuously after management, contact our A/S center.
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