Bosch CL400 Manual page 23

20 mA Interface
1070 072 196-101 (00.06) GB
Signal level and assignment of the connectors comply with the guidelines:
"VDI Richtlinien 2880, Blatt 2" for programmable logic controllers, process
and data interfaces (limitation: max. reverse voltage 27 V). The 20 mA inter-
faces can be, in dependence on the pin assignment, switched to active, i.e.
with source of current, or to passive.
Line Statuses
D logic 1 20 mA
D logic 0 no current
20 mA active
Explanation Designation
Shield Shield
Received data + PLC RxD +
Received data -- PLC RxD --
Transmitted data + PLC TxD +
Transmitted data -- PLC TxD --
Data Set Ready + DSR +
Data Set Ready -- DSR --
Reader Control + RDRCTL +
Reader Control -- RDRCTL --
For active operation, the connections 9 (12 V in) and 10 (12 V out) must be
jumpered.
20 mA passive
Explanation Designation
Shield Shield
Received data + PLC RxD +
Received data -- PLC RxD --
Transmitted data + PLC TxD +
Transmitted data -- PLC TxD --
Data Set Ready + DSR +
Data Set Ready -- DSR --
Reader Control + RDRCTL +
Reader Control -- RDRCTL --
Hardware
Pin No. Signal Direction
Housing
12 
24

13
25
14

18

16
21
Pin No. Signal Direction
Housing
22 
12

23
13
11 
14

19
16
2- -11