ABB AC500 PLC Hardware Manual page 1021

Use of Analog Inputs as Digital Inputs
Several (or all) analog inputs can be configured as digital inputs. 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.
Fig. 191: Use of analog inputs as digital inputs
The following measuring ranges can be configured
on page 1024 :
Digital input
Effect of incorrect input ter-
minal connection
The function of the LEDs is described under Diagnosis and displays / Displays
1.7.6.2.8 "Diagnosis and State LEDs" on page 1030.
Connection of Analog Output Loads (Voltage)
The following figure shows the connection of output loads to the analog output AO0. Proceed
with the analog output AO1 in the same way.
2019/04/17
Communication Interface Modules (S500) > PROFINET
Ä Chapter 1.7.6.2.7 "Parameterization"
24 V
3ADR010121, 13, en_US
Device Specifications
1 channel used
Wrong or no signal detected,
no damage up to 35 V
Ä Chapter
1021