Mitsubishi Electric GOT2000 Series Connection Manual page 379

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(7) RS-422 connection diagram 7)
*1
Terminating resistors should not be provided for a PLC and an RS-232/RS-422 interface converter which will be terminals.
*2
Set the terminating resistor of GOT side which will be a terminal.
➠ ■3.
*3
Connect FG grounding to the appropriate part of a cable shield line.
■2. Precautions when preparing a cable
(1) Cable length
The maximum 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) JTEKT PLC side connector
Use the connector compatible with the JTEKT PLC side module.
For details, refer to the JTEKT 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.
1.4.3 Terminating resistors of GOT
* 2
GOT side
RDA
2
RDB
7
SDA
1
SDB
6
SG
5
RSA
3
CSA
4
RSB
8
CSB
9
FG
-
Connecting terminating resistors
Link unit
* 1
* 1
PLC side
side
L1S+
S+
L1S-
S-
L1R+
R+
L1R-
R-
0V
0V
FG
FG
* 3
8.3 Connection Diagram
8
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