Mitsubishi Electric GT16 User Manual page 933

46.3 Connection diagram
The following diagram shows the connection between the
GOT and the PLC.
46.3.1 RS-232 cable

Connection diagram
RS232 connection diagram 1)
Connector conversion
box
side (D-sub 9-pin)
CD
1
RD(RXD)
2
SD(TXD)
3
ER(DTR)
4
SG
5
DR(DSR)
6
RS(RTS)
7
CS(CTS)
8
-
9
*1 Connect FG grounding to the appropriate part of a cable
shield line.

Precautions when preparing a cable
(1) Cable length
The total distance (between GOT and controllers) of
RS-232 cable must be 6m or less.
(2) Connector conversion box side connector
For the Connector conversion box side connector, refer
to the following.
6.7 Connector Conversion Box
(3) HITACHI PLC side connector
Use the connector supporting the HITACHI PLC side
module.
For details, refer to the HITACHI PLC user's manual.
PLC side
RS
7
SD
3
RD
2
DR
6
SG
5
ER
4
CD
1
CS
8
* 1 -
9
46.3.2 RS-422 cable

Connection diagram
RS422 connection diagram 1)
Connector conversion
box
side (D-sub 9-pin)
SDA
1
RDA
2
RSA
3
CSA
4
SG
5
SDB
6
RDB
7
RSB
8
CSB
9
*1 Connect FG grounding to the appropriate part of a cable
shield line.

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.
6.7 Connector Conversion Box
(3) HITACHI PLC side connector
Use the connector supporting the HITACHI PLC side
module.
For details, refer to the HITACHI PLC user's manual.

Connecting terminating resistors
(1) GOT side
When connecting a PLC to the GOT, a terminating
resistor must be connected to the GOT.
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.
4.2 Back Panel
46. CONNECTION TO HITACHI PLC
46.3 Connection diagram
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
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