When a PLC is used primarily to replace relays, timers, and counters, it's hard to beat the simplicity and usefulness of ladder diagram programming. Their ability to accept programming in ladder ...

Ladder Diagram, or ladder logic, can still be used and works well for discrete logic programming, such as describing the action of a simple pneumatic circuit, Ryan says. But today’s advanced machines ...

The circuits successfully performed the sum-of-product operation at 2.8 kHz. The full potential of memristors was demonstrated when the devices were made to actively re-program themselves.

The PuffinPLC Project is an effort to produce a Linux-based GNU Public Licensed Programmable Logic Controller (PLC). PLCs were developed in the 1960s to replace the complex electrical relay circuits ...

The software also implements PLCtype logic scan capable of submillisecond scan times and intuitive flow chart programming. Phoenix Contact Inc., Box 4100, Harrisburg, PA 17111, (800) 888-7388 ...

On the surface, a programmable logic controller (PLC) might seem like nothing more than a generic microcontroller, perhaps outfitted to operate in industrial settings with things like high temperat… ...