F-30
FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
4 Wiring
4.3 Connection Diagram
4.3 Connection Diagram
4.3.1 Connector pin arrangement in communication equipment operating in accordance with
RS-232C
*1. The FX2NC-232ADP does not use the CD (DCD) signal.
*2. Only the FX
0N-232ADP uses the ER (DTR) and DR (DSR) signals.
4.3.2 Wiring for communication in accordance with RS-232C
Representative wiring examples are shown in this subsection. When pin numbers in the external equipment
are different, wire the pins as shown below.
1. When connected equipment has the terminal specifications
*1. When the control line is not used, wiring is not required for this signal.
Because the interlink mode (provided only in FX
2N, FX3G(except ch0), FX3U, FX2NC, and FX3UC
PLCs) uses the control line, wiring is required for this signal.
*2. Only the FX
0N-232ADP and FX-232ADP uses the ER (DTR) and DR (DSR) signals.
FX-232ADP
FX0N-232ADP,
FX-232AW,
FX-232AWC,
FX-232AWC-H
FX
1N
-232-BD, FX
2N
-232-BD
FX
2NC
-232ADP, FX
3U
-232-BD
FX
3G
-232-BD,
FX
3U
-232ADP(-MB)
Signal
name
Function
25-pin D-Sub (female)
connector
25-pin D-Sub (female)
connector
9-pin D-Sub (male)
connector
8—
1
*1
CD (DCD) Receive carrier detection
33 2
RD (RXD)
Receive data input
22 3
SD (TXD)
Send data output
20
20
*2
4
ER (DTR)
Data terminal ready
77 5
SG (GND)
Signal ground
6
6
*2
6
DR (DSR)
Data set ready
1— —
FG
Frame ground
25
13
1
14
25
13
1
14
5
1
9
6
PLC
External equipment operating in accordance with RS-232C
Name
FX
2N
-232-BD
FX
3G
-232-BD
FX
1N
-232-BD
FX
0N
-232ADP
FX-232AW
FX-232AWC
FX-232AWC-H
FX-232ADP
Name
CS, RS
Name
DR, ER
9-pin
D-Sub
25-pin
D-Sub
9-pin
D-Sub
25-pin
D-Sub
FG −
1
FG
− 1
FG
− 1
RD(RXD)
23
RD(RXD)
23
RD(RXD)
23
SD(TXD)
32
SD(TXD)
32
SD(TXD)
32
ER(DTR)
*1
420
RS(RTS)
74
ER(DTR)
420
SG(GND)
57
SG(GND)
57
SG(GND)
57
DR(DSR)
*1
66
CS(CTS)
85
DR(DSR)
66
FX
2NC
-
232ADP
9-pin D-Sub (female) connector
25-pin D-Sub (male) connector
FX
3U
-232-BD
FX
3U
-232ADP(-MB)
*2
*2
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