For PLC programming, ... PLC Programming Goes Modular. Jan. 1, 2006. For PLC programming, ... The 61131 standard defines four programming languages, one of which is Ladder Diagram, drawn from the ...

And, the ability to monitor PLC logic in ladder diagram format also made troubleshooting easier for those already familiar with relay-based control systems. Although there are many higher-level ...

But here's the good news: With modular coding, one can avoid the tangle of spaghetti code and reap multiple benefits. Modular PLC code, with its structured and organized approach, not only enhances ...