3 Installation
3-7
Festo CDPX-… en 1203NH
3.3 Serial Port
The serial port is used to communicate with the PLC or with
another type of controller.
Different electrical standards are available for the signals in
the PLC port connector: RS-232, RS-422, RS-485.
The serial port is software programmable. Make sure you
select the appropriate interface in the programming software.
RS-232
Pin Description
1 GND
2
3 TX
4 RX
5
6 +5V output
7 CTS
8 RTS
9
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