If you go back long enough, before programmable logic controllers (PLCs) were around, we had relays, timers and electric loop controllers. Process control systems were highly distributed and hardwired ...

Threat groups who target operational technology (OT) networks have so far focused their efforts on defeating segmentation layers to reach field controllers such as programmable logic controllers (PLCs ...

This file type includes high-resolution graphics and schematics when applicable. Historically, motion controllers, programmable logic controllers (PLCs), and industrial personal computers (PCs), which ...

The question of when it’s most appropriate to use an RTU or a PLC has not faded with the continued rise of the PLC and the PAC (programmable automation controller). In fact, a member of the Automation ...