Mitsubishi Electric GT1685 Connection Manual page 272

RS-232 connection diagram 3)
PLC side connector D-sub 9-pin
For GT1030, GT1020
(When connecting to the Q/QnA/L Serial Communication Module)
GOT side
(terminal block)
SD
RD
ER
DR
SG
RS
CS
NC
NC
For GT1030, GT1020
(When connecting to the Computer Link Module)
GOT side
(terminal block)
SD
RD
ER
DR
SG
RS
CS
NC
NC
7 - 18
7. COMPUTER LINK CONNECTION
7.3 Connection Diagram
PLC side
RD(RXD)
2
SD(TXD)
3
DR(DSR)
6
ER(DTR)
4
SG
5
CD
1
RS(RTS)
7
CS(CTS)
8
-
9
PLC side
RD(RXD)
2
SD(TXD)
3
DR(DSR)
6
ER(DTR)
4
SG
5
CD
1
RS(RTS)
7
CS(CTS)
8
-
9
RS-232 connection diagram 4)
PLC side connector D-sub 25-pin
For GT1030, GT1020
(When connecting to the Q/QnA Serial Communication Module)
GOT side
(terminal block)
SD
RD
ER
DR
SG
RS
CS
NC
NC
For GT1030, GT1020
(When connecting to the Computer Link Module)
GOT side
(terminal block)
SD
RD
ER
DR
SG
RS
CS
NC
NC

Precautions when preparing a cable
(1) Cable length
The length of the RS-232 cable must be 15m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
1.4.1 GOT connector specifications
PLC side
RD(RXD)
3
SD(TXD)
2
DR(DSR)
6
ER(DTR)
20
SG
7
CD
8
RS(RTS)
4
CS(CTS)
5
FG
1
PLC side
RD(RXD)
3
SD(TXD)
2
DR(DSR)
6
ER(DTR)
20
SG
7
CD
8
RS(RTS)
4
CS(CTS)
5
FG
1