4 digital inputs and outputs (digital i/o), Configuration – Weidmuller GPRS Alarm Unit User Manual

Page 47

Configuration

4-45

4.4

Digital inputs and outputs (Digital I/O)

Active on

•

High: A message can be triggered if a voltage in the range
12 ... 24 V is present at the input.

•

Low: A message can be triggered if a voltage of 0 V is present at
the input.

•

Level change: A message can be triggered if the input voltage
changes from 0 V to 12 ... 24 V or vice versa.

The input voltage must NOT lie within the range of 4 … 10 V. In this
voltage range, no reliable status detection is provided.

CAUTION