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B-2 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual
–
May 2002 GFK-1541B
B
RS-232, RJ-11 Serial Port
The 6-pin, RJ-11 “modular phone jack”, RS-232 port is used for the following purposes:
Products Purposes of Port
IC693CMM321(AAUI-only Type)
IC693CPU374
IC697CMM742
Local Station Manager connection (only).
IC693CMM321 (10Base-T Type)
IC693CPU364
Local Station Manager connection AND
Software Loader connection (for updating
firmware).
Port Settings
The serial (COM) port of the terminal or PC that is connected to the Ethernet Interface must use
the same communications parameters as the Ethernet Interface.
The default values for the Station Manager port are 9600 bps, 8 bits, no parity, and 1 stop bit. If
the Ethernet Interface is configured with default values for this port, or the Ethernet Interface has
not been configured, use these default values. If the Ethernet Interface is configured with non-
default values for this port, use those values for the serial port settings of the terminal or PC.
The default values for the Software Loader port (this connector is used as the Software Loader
port only for those modules specified in the lowest row of the table above) are 19,200 bps, 8 bits,
Odd parity, and 1 stop bit. If the Ethernet Interface is configured with default values for this port,
or the Ethernet Interface has not been configured, use these default values. If the Ethernet
Interface is configured with non-default values for this port, use those values for the serial port
settings of the terminal or PC.
Port Pinout
a45696
1
2
3
4
5
6
Station Manager Serial Port Pinout
RJ-11 Port
Pin Number
Signal Description
1 CTS Clear To Send (input)
2 TD Transmit Data (output)
3 SG Signal Ground
4 SG Signal Ground
5 RD Receive Data (input)
6 RTS Request to Send (output)