
3-15
3 Installation and Wiring
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
3-2 Wiring
3
3-2-9 C
onnections f
or Protocol Macr
o
, S
e
rial Gate
w
a
y, No
-prot
ocol Mode
, an
d Modb
us-R
TU Sla
v
e Mode
1:1 Connections Using RS-422A/485 Ports
A(
−
)
B(+)
Terminal block connector
Signal Pin
Serial Communications Unit
Device that supports
RS-422A/485
communications
(2-wire)
Serial Communications Unit
Device that supports
RS-422A/485
communications
(4-wire)
Shield
Signal
Signal Pin
Shield
Signal
RS-422A
/485 in-
terface
RS-422A
/485 in-
terface
RS-422A
/485 in-
terface
1
2
3
4
5
RDA
RDB
SDA
SDB
FG
SDA
SDB
RDA
RDB
1
2
3
4
5
RDA
RDB
SDA
SDB
FG
Terminal block connector
RS-422A
/485 in-
terface
1
2
3
4
5
RDA
RDB
SDA
SDB
FG
FG
SD
RD
RS
CS
DR
ER
SG
RS-422A
RS-232C
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-232
RS-422
NC
SD
RD
RS
CS
5V
DR
ER
SG
DIP Switch Settings
SW1-1: ON
SW1-2: ON (terminating resistance)
SW1-3: OFF
SW1-4: OFF
SW1-5: OFF
SW1-6: OFF
Terminal block connector
(+)
5-V power
(-)
NT-AL001 Link Adapter
RS-232C
Interface
Signal
Pin
Pin
Pin
Signal
Signal
Signal
Serial Communications Unit
Computer
D-sub, 9-pin
connector (male)
Shield
RS-422A
/485 in-
terface
Содержание CJ1W-SCU22
Страница 192: ...4 Using Protocol Macros 4 56 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...