Specifications

1070 072 131-102 (96.08) GB
Hardware Description2-8
2.6.5.1 V.24 Interface Signal Levels and Pin Assignments
The signal levels and connector pin assignments correspond to the VDE
Guidelines 2880, Page 2, for programmable logic controllers, process and
data interfaces.
Signal level (data line):
logical 1 --> -15 V to -3 V
logical 0 --> +3 V to +15 V
Signal level (signalling and control line):
active --> +3 V to +15 V
passive --> -15 V to -3 V
Function Designation Pin no. Signal direction
Shield Shield *
Transmit Data, PLC TxD 2 -->
Receive-data, PLC RxD 3 <--
Signal ground Signal-Ground 7
Data Set Ready DSR 6 <--
Data Terminal Ready DTR 20 -->
Fig. 2-7 V.24 Interface — Pin assignment
* The shield is connected to the metal shell of the D-SUB connectors.