Omron NS - REV 12 Setup Manual page 285

Appendix 3 Using NS-AL002 Converters
Preparing the Shield of RS-422A/485 Connectors
Always prepare RS-422A/485 cable shields properly. Otherwise, communications errors
may occur with the host.
Ground only one end of the shield when connecting the ground terminal (GR) of the de-
vices to the functional ground (FG: ), and grounding each signal line at only one point
and to 100 Ω max, as shown in Figure (a).
Ground both ends of the shield when not grounding the functional ground (FG: ) of the
PT, as shown in Figure (b).
When using the CJ1W-CIF11 or when using the NT-AL001/NS-AL002 together with the
CJ1W-CIF11, always performs connections, shield processing, and grounding as shown in
Figure (b).
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