G&D U2+R, Установка и эксплуатация, Страница: 50 / 56

Configuration of the serial interface
20 · Target and user modules of the U2+R series
Configuration of the serial interface
In the default setting of the module, you can connect any RS232 -compatible device
to the serial interface.
If you want to transmit alternative RS422 signals, you need to change the operating
mode of the serial interface.
The following figures show the pin assignments of the serial interface:
Pin assignment with RS232 mode
The table shows how the different lines of the data connection are assigned to the
according pins:
User module Computer module
RS232 plug RS232 socket
Pin no. Signal
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 not occupied
4 5
8 6 9
1 2 3
7
1 2
4 5
8 6 7 9
3