Mitsubishi Electric GT14 User Manual page 884

RS422 connection diagram 24)
External cable
GT11H-C side
RDA
O/R (A)
RDB
O/BK (A)
SDA
W/R (A)
SDB
W/BK (A)
RSA
GY/R (A)
RSB
GY/BK (A)
CSA
Y/R (A)
CSB
Y/BK (A)
SG
PK/R (A)
FG(Shield)
Shield
*1 Connect FG grounding to the appropriate part of a cable shield line.
*2 Connect a terminating resistor (approximately 100 to 500Ω) to the PLC to be a terminal.
When the number of links exceeds 30, use a transmission line conversion unit D-01CV per 30 links.
For details, refer to the following manual.

Precautions when preparing a cable
(1) Cable length
The total distance (between GOT and controllers) of
RS-422 cable must be 13m or less.
(2) Connector conversion box side connector
For the connector conversion box side connector, refer
to the following.
6.6 Connector Conversion Box
(3) External cable side connector
For the connector specifications of the external cable
side, refer to the following.
8.2 External Cable, Relay Cable
(4) KOYO EI PLC side connector
Use the connector compatible with the KOYO EI PLC
side.
For details, refer to the KOYO EI PLC user's manual.

Connecting terminating resistors
(1) KOYO EI PLC
To connect a KOYO EI PLC to a GOT, a terminating
resistor must be set to the KOYO EI PLC.
KOYO EI PLC user's Manual
36 - 28
36. CONNECTION TO KOYO EI PLC
36.3 Connection Diagram
KOYO EI PLC side
+TXD3
9
-TXD3
10
+RXD
13
-RXD
6
-
1
-
2 to 5
-
-
8
SG
7
11
12
14
* 1
15
KOYO EI PLC user's Manual
KOYO EI PLC side
+TXD3
9
-TXD3
10
+RXD3
13
-RXD3
6
-
1
-
2 to 5
* 2
-
-
8
SG
7
11
12
14
* 1
15