VIPA SSM-BG41 - Fig. 3-2: Allocation of Terminal Pins When Operating 20 Ma Current Loop Modules

Manual BG41/BG42/BG43 Interface modules
Rev. 99/49 3-5
3.2.1.2 Allocation of the 20mA current loop module’s terminal pins
Fig. 3-2:Allocation of terminal pins when operating 20mA current loop modules
If the 20mA current loop interface module or the combination module are used as a 20mA current
loop module, the interface can be operated as a passive or active part of the transmission link. The
type of contacts for peripheral equipment varies accordingly.
It is possible to obtain 24 V from pin 11 (+24 V) and pin 22 (ground), if this voltage is available in
the connected PLC.
When using the 20mA current loop module at a baud rate of 38,4 Kbaud, a
Twisted Pair cable is required from a cable length of more than 50m, in order
to avoid the other wire pair from being influenced.