Use of analog inputs as digital inputs

Several (or all) analog inputs can be configured as digital inputs Analog Input Module AI523 The inputs are not electrically isolated against the other analog channels.

The following figure shows the use of analog inputs as digital inputs.

1 digital input requires 1 channel

The following operating mode can be configured Analog Input Module AI523 Analog Input Module AI523

Digital input

24 V

1 channel used

The function of the LEDs is described under Displays.