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Operation
optoNCDT ILR 1181 / 1182
6.2
RS422
For configuration purposes and permanent data transmissions over a greater length, the RS422 can be used.
This type of interface is insusceptible to interference and noise influences and qualifies for industrial use.
Where twisted cable pairs are involved, transmissions lengths up to 1200 m can be handled.
Properties:
- Maximum input voltage RX+, RX- = ±14 V
- Output voltage TX ±2 V, 2 x 50 W load differential
U
V
GND
<<RX+
<<RX -
TX ->>
TX+>>
wh te
brown
red
red/blue
gray
pink
Fig. 12 Wiring diagram RS422
i
The RS422 interface is popular in industrial applications. Use an adequate USB TO RS422 converter or
a RS422 interface card in the case of your PC/ notebook is just equipped with USB interfaces.
