Moeller DE4-COM-2X, Manual

Page: 76 / 167

Pin Assignment of the
Interface Cable
GB-15
03/01 AWB823-1279-D/GB/F
English
Pin Assignment of the
Interface Cable 9-pin sub-D plug for RS 232 interface
In order to use the RS 232 interface, you need an interface
cable fitted with a 9-pin sub-D plug with the following pin
assignments:
Figure 6: 9-pin sub-D plug for RS 232
9/25-pin sub-D plug for PC interface
The other end of the interface cable must be fitted with
a 9-pin or 25-pin sub-D plug (depending on the socket on
your PC’s serial interface) with the following pin assign-
ments.
Figure 7: 9/25-pin sub-D plug for PC
3 2 5
Pin Designation Input / output Comment
2 RxD Input Receive RS 232 data
3 TxD Output Send RS 232 data
5 GND – Signal earth 0 V
7 3 2 3 2 5
Pin 9-pole 25-pole
2 RxD TxD
3 TxD RxD
5 GND –
7 – GND