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1. Overview
1-24
Terminating Resistance Setting
The terminating resistance should be set on the DIP switch.
Automatic upload to storage
When the PLC is connected to the master via RS-232C:
There is no terminating resistance setting for communications between the master and the PLC. Set terminating resistances
for connections between V9 units.
Master
(= Local port 1)
CN1
MJ1/2
RS-232C
PLC
When CN1 is used:
ON
1
2
3
4
When MJ1 is used:
ON
1
2
3
4
When MJ2 is used:
ON
1
2
3
4
When the PLC is connected to the master via RS-422/485:
Make terminating resistance settings for communications between the master and PLC, and between V9 units.
Master
(= Local port 1)
CN1
MJ1/2
RS-422/485
PLC
When CN1 and MJ1 are used:
ON
1
2
3
4
When CN1 and MJ2 are used:
ON
1
2
3
4
When MJ1 and MJ2 are used:
ON
1
2
3
4
ON
1
2
3
4
Not used
Slave
(= Local port 2)
CN1/MJ1/MJ2
CN1
MJ1/2
5
6
7
8
ON
1
2
3
4
5
5
6
7
8
5
6
7
8
Slave
(= Local port 2)
CN1
CN1/MJ1/MJ2
MJ1/2
5
6
7
8
ON
1
2
3
4
5
5
6
7
8
5
6
7
8
5
6
7
8
Terminating resistance of MJ2
+RD/-RD terminating resistance of CN1
Terminating resistance of MJ1
+SD/-SD terminating resistance of CN1
Slave
(= Local port 3)
CN1/MJ1/MJ2
RS-485 (2-wire system)
ON
6
7
8
1
2
3
4
5
6
7
8
Slave
(= Local port 3)
CN1/MJ1/MJ2
RS-485 (2-wire system)
ON
6
7
8
1
2
3
4
5
6
7
8
Slave
(= Local port 4)
CN1/MJ1/MJ2
When CN1 is used:
ON
1
2
3
4
5
6
7
8
When MJ1 is used:
ON
1
2
3
4
5
6
7
8
When MJ2 is used:
ON
1
2
3
4
5
6
7
8
Slave
(= Local port 4)
CN1/MJ1/MJ2
When CN1 is used:
ON
1
2
3
4
5
6
7
8
When MJ1 is used:
ON
1
2
3
4
5
6
7
8
When MJ2 is used:
ON
1
2
3
4
5
6
7
8
- Quick Links:
- System Configuration
- Plc Settings
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