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Revision 071108
Page 14 of 102
SERIAL INTERFACE
The 708M12 Switch provides an EIA-232 interface accessed via an A Coded female connector (labeled
‘COM’ on the unit). This is used to access the Command Line Interpreter (CLI). The pin-outs are shown
below:
SERIAL-DB9-M12
Serial Cable
Connect the serial COM port of your PC and the 708M12 Switch using N-Tron’s SERIAL-DB9-M12 serial
cable. You will require a cable with a 9-pin or 25-pin sub-D female connector for the PC end, and a 4-Pin A
Coded M12 Male connector for the 708M12 end.
The following table shows the pin-out and the connections for both types of cable:
PC Port 25-Pin 9-Pin 708M12
Female Female 4-Pin A Coded M12 Male
Signal Name Pin # Pin # Pin # Signal Name
TXD 2 3 2 RXD
RXD 3 2 1 TXD
GND 7 5 3/4 GND
HyperTerminal
The following configuration should be used in HyperTerminal:
Port Settings: 115200
Data Bits: 8
Parity: NONE
Stop bits: 1
Flow Control: NONE