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.

Beginning our discussion with a focus on the textual languages, Yerger noted that the Instruction List textual PLC programming language is “a very low-level, mnemonic-based language” whose days look ...

Although there are many higher-level languages now available for PLC programming, the majority of systems are still programmed in ladder diagram format because of these advantages. Anatomy of a ladder ...

An overview of the hardware and software components of PLCs and their programming languages. A programmable logic controller (PLC) is an industrial ... is a high-level language that uses sentence ...

This paper attempts a journey right from configuring a PLC, writing application program to code generation ... The protocol details are not part of this high level programming. IEC 61131-3 software ...