Mitsubishi FX3U-232-BD User Manual page 231

FX Series PLC User's Manual - Data Communication Edition
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4.4 Connection Diagram for RS-232C
Representative wiring examples are shown in this section. When pin numbers in the external equipment are
different, wire the pins as shown below.
4.4.1 Connection diagram between FX PLC and personal computer
FX -232-BD
3U
FX -232-BD
2N
Name
FX -232-BD
1N
FX -232ADP(-MB)
3U
FG
RD(RXD)
SD(TXD)
ER(DTR)
SG(GND)
DR(DSR)
4.4.2 Connection diagram between FX-485PC-IF and personal computer
485PC-IF
Signal name
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
DR (DSR)
SG (GND)
ER (DTR)
PLC side
FX - FX -
2NC 0N
232ADP 232ADP
−
2 3
3 2
4 20
5 7
6 6
Pin No.
2
3
4
5
6
7
20
External equipment operating in accordance
When CS and
RS are used
FX-232ADP Name
9-pin
D-Sub
1 FG
RD(RXD)
SD(TXD)
RS(RTS)
SG(GND)
CS(CTS)
Personal computer
Signal name
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
DR (DSR)
SG (GND)
ER (DTR)
4.4 Connection Diagram for RS-232C
with RS-232C
When DR and
ER are used
Name
25-pin 9-pin
D-Sub D-Sub
− −
1 FG
2 3 RD(RXD) 2
3 2 SD(TXD) 3
7 4 ER(DTR) 4
5 7 SG(GND) 5
8 5 DR(DSR) 6
4 Wiring
A
B
C
25-pin
D-Sub
1
3
2
20
D
7
6
E
F
G
H
I
Apx.
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