Engineering; Rs 232 Interface; Pin Assignments - Moeller DE4-COM-2X Manuel

03/01 AWB823-1279-D/GB/F

RS 232 Interface

2 Engineering

h The process engineering information and example circuit
diagrams described in this manual are suggestions whose
suitability for the respective application must be checked
by the user.
Warning!
Suitable measures must be implemented to ensure that, if
the interface module fails, there is no risk of injury to
personnel or damage to equipment.

Pin assignments

The following table describes the pin assignments of the
9 pin sub-D serial interface connector.
5 4 3 2
9 8 7
Figure 3: 9 pin sub-D plug for RS 232
Pin Designation
1 –
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 T/R(A)
8 T/R(B)
9 Vcc 5
1
6
Input/ output Comment
– Unused
Input Receive RS 232 data
Output Send RS 232 data
Output Data send control signal
for RS 232
– Signal earth 0 V
Input Unused RS 232
Input/output RS 485
Input /output RS 485
Output Power supply +5 V/10 mA
GB-13