GE GFK-1852 - Manual (Page 58)

GFK-1852 Chapter 6 Serial Line Interfaces 6-11
Serial Line Interfaces
6
9-Pin, D-Sub PLC Serial Port Connector
This connector is used for an RS-232 serial port on VersaMax CPUs. For additional
information on VersaMax serial ports, please refer to the VersaMax PLC User’s
Manual, GFK-1503.
3LQ 
3LQ 
56 3RUW
3LQ )HPDOH
'6XE
3LQ 
3LQ
([WHUQDO 9LHZ
Pin-Out for 9-Pin D-Sub Serial Connector (RS-432)
Pin Signal Direction Function
1 N/C No connection
2 TXD Output Transmit Data output
3 RXD Input Receive Data input
4 N/C No connection
5 GND -- 0V/GND signal reference
6 N/C No connection
7 CTS Input Clear to Send input
8 RTS Output Request to Send output
9 N/C No connection
Shell SHLD -- Cable Shield wire connection
Figure 6-16. 9-Pin D-Sub Serial Port Connector