There are many vendors and sources of PLCs: Automation Direct, FactoryMation, B&B Electronics, and yes, even eBay, among others. I will use the Click PLC available from Automation Direct as an example ...

Rockwell Automation announces the new Allen-Bradley Micro820 programmable logic controller (PLC), a new addition to the Allen-Bradley Micro800 PLC family. The 20-point Micro820 controller features ...

The project is designed to switch industrial loads using a user programmable logic control device and Android application for sequential operation. The project is designed to operate electrical loads ...

But more severe failure poses a safety hazard to personnel. When products or applications are used for safety functions—for example a light curtain, a safety programmable logic controller (PLC), a ...

When learning ladder logic, I was told that some new PLC systems were moving to scripted programming languages. My instructor assured us that we would not need to know anything other than ladder logic ...