Appendices
A-130
CJ2 CPU Unit Hardware User’s Manual
Examples of connections to use Serial PLC Links are provided below. The Serial PLC Link communica-
tions mode is used.
z Connecting with RS-422A Converters
Note The CJ1W-CIF11/CP1W-CIF11 is not isolated. The maximum transmission distance is therefore 50 m.
If the distance exceeds 50 m, use the isolated CP1W-CIF12, or the NT-AL001.
Do not use the CJ1W-CIF11/CP1W-CIF11 in the transmission path. If you use the NT-AL001 and CP1W-
CIF12, the maximum total transmission distance will be 500 m.
Serial PLC Links for OMRON CJ2M, CJ1M, CP1H, CP1L, and CP1E
PLCs
3
4
1
2
5
SDA−
SDB+
RDA−
RDB+
FG
RS-232C
RS-232C
RS-422A
FG
SD
RD
RS
CS
DR
ER
SG
1
2
3
4
5
6
7
8
GRD
SG
SDB
SDA
RDB
RDA
CSB
CSA
1
2
3
4
5
6
7
8
9
RS-232RS-422
NC
SD
RD
RS
CS
5V
DR
ER
SG
FG
SD
RD
RS
CS
DR
ER
SG
1
2
3
4
5
6
7
8
GRD
SG
SDB
SDA
RDB
RDA
CSB
CSA
1
2
3
4
5
6
7
8
9
RS-232RS-422
NC
SD
RD
RS
CS
5V
DR
ER
SG
Shield
CPU Unit
Signal
name
Signal
name
Signal
name
Signal
name
Signal
name
Signal
name
Signal
name
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: ON
D-sub, 9-pin
connector (male)
RS-232C
Interface
NT-AL001 Link Adapter
NT-AL001 Link Adapter
Pin
No.
Pin
No.
Pin
No.
Pin
No.
Pin
No.
Terminal block
5-V
power
(+)
(–)
Shield
RS-232C
Interface
Shield
Terminal block
5-V
power
(+)
(–)
Shield
RS-
422A/485
Option
Board
4-wire
Terminating
resistance: ON
Terminal block
DIP Switch: Pin 2:
OFF (terminating
resistance); Other
pins are the same
as below.
CJ2M CPU Unit (Polling Unit) CJ2M CPU Unit (Polled Unit 0)
CJ1W-CIF11 RS-422A
Converter
RS-422A/485
Option Board
Serial PLC Link (maximum
total distance: 50 m)
CJ1M CPU Unit (Polled Unit 1)
RS-232C port
built into CPU
Unit
CJ1W-CIF11 RS-422A
Converter
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