Fuji Electric Monitouch S8 series, Connection Manual

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1.4 Wiring 1-11
•
If noise disturbs communications, connect a shielded cable to both the S8 series and the connected device.
- RS-422 (4-wire system)
- RS-485 (2-wire system)
Multi-drop connection (1 : n)
In the case of multi-drop connection, wiring between a S8 and a connected device is the same as that for 1 : 1
communication. Meanwhile, for description of wiring between connected devices, refer to the manual issued by the
manufacturer.
•
Connection example
Name
1
No.
2
3
4
-RD
-SD
+SD
5 SG SG
FG
+RD
FG
Dsub 9 (Male)
COM1
5
9
1
6
Shield
RS-422 port of the
connected device
Send data (+)
Receive data (
−
)
Send data (
−
)
Receive data (+)
Name
1
No.
2
3
4
-RD
-SD
+SD
5 SG SG
FG
+RD
FG
Dsub 9 (Male)
COM1
5
9
1
6
Shield
RS-485 port of the
connected device
Send/receive data (+)
Send/receive data (
−
)
Name
1
No.
2
3
4
-RD
-SD
+SD
5 SG
+RD
FG
Dsub 9 (Male)
COM1
5
9
1
6
SG
FG
SG
FG
RS-422 port of the
connected device
Send data (
−
)
Receive data (+)
Send data (+)
Receive data (
−
)
RS-422 port of the
connected device
Send data (
−
)
Receive data (+)
Send data (+)
Receive data (
−
)
RD terminating resistance: ON
For wiring between connected devices, refer to the
manual issued by the manufacturer.