Use of Analog Inputs as Digital InputsΒΆ

Several (or all) analog inputs can be configured as digital inputs CI581-CN . The inputs are not electrically isolated against the other analog channels.

The following figure shows the connection of digital sensors to the analog input AI0. Proceed with the analog inputs AI1 to AI3 in the same way.

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Use of analog inputs as digital inputs

Digital input 24 V 1 channel used

For the measuring ranges that can be configured, please refer to the sections Measuring Ranges CI581-CN and Parameterization CI581-CN.