THE use of function blocks for programming of programmable logic controllers (PLCs) is gaining wider acceptance. Rather than the classic “contact and coil” representation of ladder diagram or relay ...

For many small and mid-sized factory managers, the question often arises: "Can programmable logic controllers (PLCs) actually help my facility save money, or are they just for the industry giants?" In ...

A new family of PLC-controlled robots combines a SCARA robot with a PLC Server that allows direct programming of the robot from the Allen-Bradley family of PLCs, through a DF-1 serial connection. The ...

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 ...