Omron CJ1W-DRM21 Operation Manual page 74

2 Nomenclature and Installation
Communications Connectors
Color stickers that match communications cable colors are attached to the communications connec-
tors. Match the colors when connecting communications cables to the connectors. These colors are
given in the following table
Black
Blue
---
White
Red
For details on communications specifications and wiring, refer to the DeviceNet OPERATION MAN-
UAL (Cat. No. W267).
Precautions for Safe Use
Before connecting communications cables, turn OFF the Controller power supply, all slave power
supplies, and the communications power supply.
2-8
Color
Power line, negative voltage (V–)
Communications line, low (CAN L)
Shield
Communications line, high (CAN H)
Power line, positive voltage (V+)
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
Signal