6. Connections of Control Unit
6.9 Connecting with RS-232C Device
69
(2) Example of wiring connections to the RS-232C device
When connecting to the RS-232C device, refer to the following diagrams and cross the wiring for the
transmission signals.
SD(TXD)
RD(RXD)
RS(RTS)
CS(CTS)
ER(DTR)
DR(DSR)
CD(DCD)
0V
FG
No hand shaking
upon RS/CS, ER/DR signals
Hand shaking
upon RS/CS, ER/DR signals
SD(TXD)
RD(RXD)
RS(RTS)
CS(CTS)
ER(DTR)
DR(DSR)
CD(DCD)
0V
FG
SD(TXD)
RD(RXD)
RS(RTS)
CS(CTS)
ER(DTR)
DR(DSR)
CD(DCD)
0V
FG
SD(TXD)
RD(RXD)
RS(RTS)
CS(CTS)
ER(DTR)
DR(DSR)
CD(DCD)
0V
FG