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 ...

For PLC programming, U.S control engineers and technicians turn typically to ladder logic, a programming technique that’s been around since the birth of programmable logic controllers, or PLCs, in 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 ...

THE HUMAN-MACHINE INTERFACE Among the ways to interface and program the PLC, you may use a PC running the programming software and “hard-code” the program parameters such as set points, timer delays, ...

If you’ve ever wanted to learn how to program PLCs — a very marketable job skills in some places — you can now build and simulate ladder logic in your browser.

Many concepts of software development map over to PLC programming, but expect differences in terminology, and (in my experience) a lot of "I'll develop directly in production"-level bad practices.