User`s manual

Table Of Contents
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MELSOFT
2. SYSTEM CONFIGURATION
(d) Connection to serial communication module
The specifications of the RS-232 cable connector are indicated below.
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Signal NameSignal Code
Pin
Number
Signal Direction
Serial communication module
External device
CD(DCD)
RD(RXD)
SD(TXD)
ER(DTR)
DR(DSR)
CS(CTS)
CI(RI)
SG
Ring indicator
Clear to send
Request to send
Data set ready
Signal ground
Data terminal ready
Received data
Data carrier detect
Transmitted data
RS(RTS)
• Connection example which can turn ON/OFF CD signal (No. 1 pin)
Signal code Pin number
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2
3
4
5
6
7
8
9
Other End Device Side
Signal code
Serial communication
module Side
CD(DCD)
RD(RXD)
SD(TXD)
ER(DTR)
DR(DSR)
CS(CTS)
SG
RS(RTS)
CD(DCD)
RD(RXD)
SD(TXD)
ER(DTR)
DR(DSR)
CS(CTS)
CI(RI)
SG
RS(RTS)
• Connection example which cannot turn ON/OFF CD signal (No. 1 pin)
Connection example for exercising DC code control or DTR/DSR control
Other End Device Side
Signal codeSignal code Pin number
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2
3
4
5
6
7
8
9
Serial communication
module Side
CD(DCD)
RD(RXD)
SD(TXD)
ER(DTR)
DR(DSR)
CS(CTS)
SG
RS(RTS)
CD(DCD)
RD(RXD)
SD(TXD)
ER(DTR)
DR(DSR)
CS(CTS)
CI(RI)
SG
RS(RTS)
(e) Connection via GOT
For cables for connection of a peripheral device to the programmable
controller via GOT by the GOT transparent mode, refer to the GOT1000
Series Connection Manual (Mitsubishi Products).