The graphical programming realm Explaining the principal differences among the graphical PLC programming languages, Yerger started with Ladder Diagram, noting its development from relay logic. “It ...

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 ...

Directly represented variables (e.g. %IX1.1, %IW1.1, %QX1.1) are used to address the memory locations within a PLC directly. Global variables in our study example program are as shown in the code for ...

STÄUBLI TEC-SYSTEMS is launching the uniVAL pi software that will allow robot programming to be implemented via the PLC, using Plug & Play in Siemens TIA Portal. Thanks to this optionally available ...

A safety PLC can add great benefits to the automation project, but it also can add scan time that may affect the response time of the safety system. It is important to understand this and to select ...