GE GFK-1852 - Manual (Page 60)

GFK-1852 Chapter 6 Serial Line Interfaces 6-13
Serial Line Interfaces
6
RJ-11 PLC Serial Port Connector
This connector is used for an RS-232 serial port on some Series 90-30 and Series 90-
70 CPUs. For additional information on these ports, please refer to the Series 90
PLC Serial Communications Manual, GFK-0582.
Pin 1
RS-232, 6-Pin RJ-11
External View
Pin
Number
Signal Name Description
1 CTS Clear to Send
2 TXD Transmit Data
3 0V Signal Ground
4 0V Signal Ground
5 RXD Receive Data
6 RTS Request to Send
Figure 6-18. RJ-11 Serial Port Connector