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Wiring
18
KW2M-A/X User's Manual
4.8 RS485 Communication
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When using a shielded cable for the RS485 transmission line, ground one end.
Use a class D dedicated earth for grounding. Do not share a ground with other earth lines. (Fig. 1)
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Make sure to establish a daisy-chain connection with the RS485 transmission line between each unit.
Do not use a splitter. (Fig. 1)
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To avoid noise, separate the transmission lines from high-voltage lines (power supply, voltage line).
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How to connect a KW2M-A (2-wire) and a KW9M (3-wire)
(Fig.1)
Correct wiring
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Incorrect wiring
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Terminal Terminal
station station