When several devices need to be accurately sequenced in a machine vision system, the usual solution was to program a PLC to generate the necessary signals. However, a PLC is a significant investment and requires specialist knowledge to program the Relay Ladder Logic. 

Vision systems play a critical role in factory automation. They guide, inspect and track product manufacturing, assembly and packaging to meet today’s quality standards.

With the introduction of industrial networks, sensors offering positional data were soon offered with direct connections to these networks.