Mitsubishi Electric GOT2000 Series Connection Manual page 315

■2. RS-422 cable
(1) Connection diagram
(a) RS-422 connection diagram 1)
(b) RS-422 connection diagram 2)
*1 The signals RSA, RSB, CSA, and CSB are not provided for
(2) Precautions when preparing a cable
(a) Cable length
The length of the RS-422 cable must be 500m or less
(b) GOT side connector
For the GOT side connector, refer to the following.
➠
1.4.1 GOT connector specifications
(c) KEYENCE PLC side connector
Use the connector compatible with the KEYENCE PLC side module.
For details, refer to the KEYENCE PLC user's manual.
(3) Connecting terminating resistors
(a) GOT side
When connecting a KEYENCE PLC to the GOT, a terminating resistor must be connected to the GOT.
• For GT27, GT25(Except GT2505-V), GT23
Set the terminating resistor setting switch of the GOT main unit to "Disable".
• For GT2505-V, GT21
Set the terminating resistor selector to "330 ".
For the procedure to set the terminating resistor, refer to the following.
➠ 1.4.3 Terminating resistors of GOT
GOT side
SDA
1
RDA
2
RSA
3
CSA
4
SG
5
SDB
6
RDB
7
RSB
8
CSB
9
FG
-
GOT side
(terminal block)
SDA
SDB
RDA
RDB
SG
* 1
RSA
* 1
RSB
* 1
CSA
* 1
CSB
KEYENCE PLC side
(terminal block)
RDB(+)
4
SDB(+)
5
SG
1
RDA(-)
2
SDA(-)
3
KEYENCE PLC side
(terminal block)
RDB(+)
4
RDA(-)
2
SDB(+)
5
SDA(-)
3
SG
1
.Return connection is not required.
6.2 Serial Connection
6
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