Mitsubishi Electric GOT2000 Series Connection Manual page 96

3.3.2 RS-422 cable
■1. Connection diagram
(1) RS-422 connection diagram 2)
*1
■2. 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.
➠
(3) HITACHI PLC side connector
Use the connector compatible with the HITACHI PLC side module.
For details, refer to the HITACHI PLC user's manual.
■3. Connecting terminating resistors
(1) GOT side
(a) For GT27,GT25(Except GT2505-V), GT23
Set the terminating resistor setting switch of the GOT main unit to "Disable".
(b) For GT2505-V
Set the terminating resistor selector to "330Ω".
For the procedure to set the terminating resistor, refer to the following.
➠
3 - 6
3.3 Connection Diagram
GOT side
SDA
1
RDA
2
RSA
3
CSA
4
SG
5
SDB
6
RDB
7
RSB
8
CSB
9
Connect FG grounding to the appropriate part of a cable shield line.
1.4.1GOT connector specifications
1.4.3Terminating resistors of GOT
PLC side
RD-H
2
SD-H
3
-
6
ATT-H
7
SG
5
RD-L
1
SD-L
4
-
8
* 1
ATT-L
9