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.

Connection example

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

Digital input	24 V	1 channel used
Effect of incorrect input terminal connection		Wrong or no signal detected, no damage up to 35 V

For a description of the function of the LEDs, please refer to Diagnosis and displays / displays AI531 - Analog Input Module.