Omron SYSMAC CJ1W-SCU21-V1 User Manual

116
RS-232C and RS-422A/485 Wiring Section 3-4
3-4-2 Recommended RS-422A/485 Wiring Examples
Recommended RS-422A/
485 Cable
1,2,3... 1. Always use shielded twisted-pair cables as communications cables.
2. Connect the shield of the communications cable to the Hood (FG) of the
RS-422A/485 connector on the Serial Communications Board or Unit. At
the same time, ground the ground (GR) terminal of the Power Supply Unit
on the CPU Rack or CS Expansion Rack to 100
Ω or less.
Note Always ground the shield only at the Board/Unit end. Grounding both ends of
the shield may damage the device due to the potential difference between the
ground terminals.
Connection examples are shown below.
2-Wire Connections
4-Wire Connections
Using a B500-AL001-E Link Adapter
Model Manufacturer
CO-HC-ESV-3Px7/0.2 Hirakawa Hewtech Corp.
Serial Communications
Board/Unit
Remote device
Shield
Hood
Pin
Signal
Signal
Serial Communications
Board/Unit
Remote device
Shield
Pin
Signal
Hood
Signal
Serial Communications
Board/Unit
Remote device
Signal
Pin
RS-422
interface
Remote device
B500-AL001
Signal
Hood
Signal
Pin
Signal Pin
Pin
Signal
Signal

Omron SYSMAC CJ1W-SCU21-V1 Specifications

General

Brand	Omron
Model	SYSMAC CJ1W-SCU21-V1
Category	Network Hardware
Language	English