Mitsubishi FX3U-485-BD User Manual

D-34
FX Series PLC User's Manual - Data Communication Edition
Computer Link
4 Wiring
4.4 Connection Diagram for RS-232C
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
4.4.2 Connection diagram between FX-485PC-IF and personal computer
External equipment operating in accordance
with RS-232C
Name
When CS and
RS are used
Name
When DR and
ER are used
9-pin
D-Sub
25-pin
D-Sub
9-pin
D-Sub
25-pin
D-Sub
FG − 1FG − 1
RD(RXD) 2 3 RD(RXD) 2 3
SD(TXD) 3 2 SD(TXD) 3 2
RS(RTS) 7 4 ER(DTR) 4 20
SG(GND) 5 7 SG(GND) 5 7
CS(CTS) 8 5 DR(DSR) 6 6
FG
RD(RXD)
PLC side
SD(TXD)
ER(DTR)
SG(GND)
DR(DSR)
Name
FX 2N -232-BD
FX
1N -232-BD
FX
0N -
232ADP
FX-232ADP
− 1
23
32
420
57
66
FX 2NC -
232ADP
FX 3G -232-BD
FX
3U -232-BD
FX
3U -232ADP(-MB)
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
DR (DSR)
SG (GND)
ER (DTR)
Signal name Pin No.
2
3
4
5
6
7
20
485PC-IF
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
DR (DSR)
SG (GND)
ER (DTR)
Signal name
Personal computer

Mitsubishi FX3U-485-BD Specifications

General

Brand	Mitsubishi
Model	FX3U-485-BD
Category	Controller
Language	English