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(2) RS422A
wiring
PC and multiple devices are connected with RS422A. A line converter is required.
RS422A cable is within 1.2km of total extension and up to 31 devices can be connected.
Install a resistor of 100
Ω
to the last edge of the transmission line device side.
(General metal film resistors will be fine. They are available from us, place an order.)
Example of terminal connection
(3) RS485
wiring
PC and multiple devices are connected with RS485. A line converter is required.
RS485 cable is within 1.2km of total extension and up to 31 devices can be connected.
Install a resistor of 100
Ω
to the last edge of the transmission line device side.
(General metal film resistors will be fine. They are available from us, place an order.)
Example of terminal connection
Turn the switch of RS422A/RS485
to RS422A.
Avoid connecting SG line to FG terminal or
ground terminal of the device.
RDB
RDA
SDA
SDB
SG
Termination
resistor
100
Ω
Device side
Line converter
SC8-10
RDB
RDA
SDA
SDB
SD
RD
SG
1
2
3
4
5
6
7
8
Cable for RS232C (Max. 15m)
RZ-CRS6
Communications port
PC side
SD
RD
SG
RDB
RDA
SDA
SDB
SG
RDB
RDA
SDA
SDB
SG
SA
SB
SG
RDB
RDA
SD
RD
SG
1
2
3
4
5
6
7
8
Turn the switch of RS422A/RS485
to RS485.
Avoid connecting SG line to FG terminal or
ground terminal of the device.
Termination
resistor
100
Ω
Device side
Line converter
SC8-10
Cable for RS232C (Max. 15m)
RZ-CRS6
Communications port
PC side
SD
RD
SG
SA
SB
SG
SA
SB
SG