Examples Of 1:1 Connections To Rs-422A/485 Ports - Omron CJ2 CPU UNIT User Manual

Cj2 cpu unit hardware
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Appendices

Examples of 1:1 Connections to RS-422A/485 Ports

CPU Unit
Signal
name
RS-
SDA−
422A/485
SDB+
Option
RDA−
Board
RDB+
FG
Terminal block
CPU Unit
Signal
name
RS-
SDA−
422A/485
SDB+
Option
RDA−
Board
RDB+
FG
Terminal block
A-128
Component
with
RS-422A/485
(2-wire)
Signal
Pin
RS-
Shield
name
No.
422A/485
A(−)
3
interface
B(+)
4
1
2
5
NT-AL001 Link Adapter
RS-422A
Pin
Shield
No.
Signal
Signal
Pin
name
name
3
No.
1
GRD
4
2
SG
1
2
3
SDB
5
4
SDA
5
RDB
6
RDA
7
CSB
8
CSA
RS-422
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
Signal
Pin
name
No.
RS-
SDA−
3
422A/485
SDB+
4
Option
RDA−
1
Board
RDB+
2
FG
5
Terminal block
Personal Computer
Pin
Signal
No.
name
RS-232C
NC
1
FG
SD
2
SD
RD
3
RD
RS-232C
RS
4
RS
Interface
CS
5
CS
5V
6
DR
7
DR
ER
8
ER
SG
9
SG
RS-232
(+)
5-V
power
(–)
Component
with
RS-422A/485
(4-wire)
Signal
Shield
name
RS-
SDA
422A/485
SDB
interface
RDA
RDB
CJ2 CPU Unit Hardware User's Manual

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