Rs-422A/485 Ports With 1:1 Connection - Omron CJ2 CPU UNIT User Manual

Appendices

RS-422A/485 Ports with 1:1 Connection

Personal Computer
Signal
name
FG
SD
RD
RS-232C
RS
Interface
CS
DR
ER
SG
(+)
5-V
power (–)
A-120
NT-AL001 Link Adapter
Pin Signal Signal
Pin
No. name name
No.
Shield
1 NC GRD 1
2 SD SG 2
3 RD SDB 3
4 RS SDA 4
5 CS RDB 5
6 5V RDA 6
7 DR CSB 7
8 ER CSA 8
9 SG
RS-232 RS-422
Terminal block
D-sub, 9-pin
connector (male)
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: OFF
CPU Unit
Pin Signal
No.
name
RS-
3 SDA
422A/485
4 SDB
Option
1 RDA Board
2 RDB
5 FG
4-wire
Terminating resistance: ON
CJ2 CPU Unit Hardware User's Manual