Product Detection

A sensor detects the product as it enters the labeling area and confirms that it is present and in position to begin the print-and-apply cycle. This detection can be done with a photo-eye, reflective sensor, through-beam sensor, proximity sensor, barcode scanner, or vision camera, depending on the application. Once the product is detected, the PLC or controller starts the sequence by preparing the label data, timing the product movement, and determining when the label should be printed and applied. Proper product detection is important because it helps ensure the label is placed accurately.