Product Description
2
0
1
8
-0
9
13
RS-485 Terminator
If the interface module is operated as the first or last physical device in an RS-485 bus, there
must be a bus termination on this module. To do this, set the "Rx 422 Termination" slide switch
to "Off" and the "Tx 422 Termination" slide switch to "On." This activates the RS-485 terminator
(150
Ω
) built into the interface module.
If you only connect one WCS reader to the interface module, you must always activate the RS-
485 terminator; see also Cable routing in the RS-485 bus.
*) RS485-
T
er
mina
tion:
Rx422 = off
T
x422 = on
1
2
3
4
5
6
7
Rx232
T
x232
AP
-GND
Rx422+
Rx422-
T
x422+
T
x422-
RS485+
RS485-
Rx422* Ter
mination
Tx422*
On Off On O
ff
X1
