The module decreases a value when triggered.

Indirect Addressing Concept For Scanning No.of Products to Avoid Duplicate Barcode Number when products are travelling through conveyor

The AOI provides a sensor signal to be treated according to its authenticity proof. The AOI is mainly developed to be used with any industrial protocol sensor/gateway/module (ex. Modbus sensor/gateway, remote IO etc), but could be used with any analog measured value.