Rs-422 Cable - Mitsubishi Electric GOT2000 Series Connection Manual

12.3.2 RS-422 cable


Connection diagram
(1) RS-422 connection diagram 1)
GOT side
SDA
1
SDB
6
RDA
2
RDB
7
SG
5
RSA
3
RSB
8
CSA
4
CSB
9
*1 For the system terminal, connect a 120
terminating resistor across RDA and RDB, and across
SDA and SDB respectively.
(2) RS-422 connection diagram 2)
LS INDUSTRIAL SYSTEMS PLC
side (terminal block) * 1
RDA
RDB
SDA
SDB
SG
FG
*1 For the system terminal, connect a 120
terminating resistor across RDA and RDB, and across
SDA and SDB respectively.
(3) RS-422 connection diagram 3)
GOT side
(terminal block)
SDA
SDB
RDA
RDB
SG
RSA
RSB
CSA
CSB
*1 For the system terminal, connect a 120
terminating resistor across RDA and RDB, and across
SDA and SDB respectively.
12 - 10
12. CONNECTION TO LS INDUSTRIAL SYSTEMS PLC
12.3 Connection Diagram
LS INDUSTRIAL SYSTEMS PLC
side (terminal block) * 1
RDA
RDB
SDA
SDB
SG
FG
(1/2W)
LS INDUSTRIAL SYSTEMS PLC
side (terminal block) * 1
RDA
RDB
SDA
SDB
SG
FG
(1/2W)
LS INDUSTRIAL SYSTEMS
PLC side (terminal block)
RDA
RDB
SDA
SDB
SG
FG
(1/2W)

Precautions when preparing a cable
(1) Cable length
The length of the RS-422 cable must be 500m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
1.4.1 GOT connector specifications
(3) LS INDUSTRIAL SYSTEMS PLC side connector
Use the connector compatible with the LS
INDUSTRIAL SYSTEMS PLC side module.
For details, refer to the user's manual of the LS
INDUSTRIAL SYSTEMS PLC.

Connecting terminating resistors
(1) GOT side
Set the terminating resistor setting switch of the GOT
main unit to "Disable".
For the procedure to set the terminating resistor, refer
to the following.
1.4.3 Terminating resistors of GOT
(2) LS INDUSTRIAL SYSTEMS PLC side
When connecting an LS INDUSTRIAL SYSTEMS PLC
to the GOT, a terminating resistor must be connected.
12.3.2 RS-422 cable ■ Connection diagram
*1