Connection To External Equipment With Terminal Specifications (With Control Line) - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (FX
4.3 Connection to External Equipment with Terminal Specifications
(with Control Line)
4.3.1 Standard RS-232C mode
Cross cable, BFM #0 (communication format): b9 = 0, b8 = 1 (standard RS-232C mode)
PLC side
Name
FX -232IF
2N
3
SD(TXD)
2
RD(RXD)
7
RS(RTS)
8
CS(CTS)
1
CD(DCD)
4
ER(DTR)
6
DR(DSR)
5
SG(GND)
4.3.2 Interlink connection mode
Interlink serial cross cable, BFM #0 (communication format): b9 = 1, b8 = 1 (RS-232C interlink connection mode)
PLC side
Name
FX -232IF
2N
3
SD(TXD)
2
RD(RXD)
7
RS(RTS)
8
CS(CTS)
4
ER(DTR)
6
DR(DSR)
5
SG(GND)
4.4 Connection to External Equipment with Modem Specifications
Straight cable, BFM #0 (communication format): b9 = 0, b8 = 1 (standard RS-232C mode)
PLC side
Name FX -232IF
2N
3
SD(TXD)
2
RD(RXD)
7
RS(RTS)
8
CS(CTS)
1
CD(DCD)
4
ER(DTR)
6
DR(DSR)
5
SG(GND)
9
CI(RI)
-232IF)
2N
RS-232C external equipment side
Name
9-pin D-Sub 25-pin D-Sub
3
SD(TXD)
2
RD(RXD)
7
RS(RTS)
8
CS(CTS)
1
CD(DCD)
*1 *1
4
ER(DTR)
6
DR(DSR)
*2 *2
5
SG(GND)
RS-232C external equipment side
Name
9-pin D-Sub 25-pin D-Sub
3
SD(TXD)
2
RD(RXD)
7
RS(RTS)
*1 *1
8
CS(CTS)
4
ER(DTR)
*2 *2
6
DR(DSR)
5
SG(GND)
RS-232C external equipment side
Name
9-pin D-Sub 25-pin D-Sub
3
SD(TXD)
2
RD(RXD)
7
RS(RTS)
8
CS(CTS)
*1 *1
1
CD(DCD)
4
ER(DTR)
*2 *2
6
DR(DSR)
5
SG(GND)
*3 *3
9
CI(RI)

4.3 Connection to External Equipment with Terminal Specifications (with Control Line)

When the FX
2N
to send) signal at its carrier to send (CS) pin, the
FX -232IF transfers signals as if the external
2N
2
equipment exists.
3
*1. It is not necessary to connect the CD signal if
monitoring the CD signal is not required.
4
For the CD signal, the 232IF indicates only the
5
status.
8
*2. The 232IF indicates only the status.
20
6
7
In the interlink connection mode, the 232IF can
receive data larger than 512 bytes which is the
upper limit of the received data buffer in the
2
232IF.
3
*1. In this mode, the request to send (RS) signal works
as the receiving enable signal for the 232IF.
4
When the 232IF receives data beyond the
5 maximum number of receivable bytes, it turns OFF
which works as the receive ready signal (RS signal)
20
to ask the external equipment to stop sending. At
6
this time, by withdrawing the data located in the
7
received data buffer using a sequence program,
the 232IF can receive remaining data.
*2. The 232IF indicates only the status.
*1. It is not necessary to connect the CD signal if
monitoring the CD signal is not required.
For the CD signal, the 232IF indicates only the
status.
2
*2. The 232IF indicates only the status.
3
*3. It is not necessary to connect the CI signal if
4
monitoring of the CI signal is not required. For the
5
CI signal, the 232IF indicates only the status.
8
20
6
7
22
-232IF receives the RS (request
4 Wiring
A
B
C
D
E
F
G
H
I
Apx.A
G-13