Connection of digital signal sources at analog inputs

Several (or all) analog inputs can be configured as digital inputs AI531 Analog Input Module. The inputs are not electrically isolated against the other analog channels.

The following figure shows the connection of digital signal sources at analog inputs.

Connection of digital signal sources at analog inputs. 1 digital signal requires 1 channel.

The following operating mode can be configured AI531 Analog Input Module AI531 Analog Input Module:

Digital input

24 V

1 channel used

The function of the LEDs is described under Diagnosis and displays / displays AI531 Analog Input Module.