IEC 61131-3 is the first real endeavor to standardize programming languages for industrial automation. With its worldwide support, it is independent of any single company. The third part of the IEC 61131 family, it is a specification of the syntax and semantics of a unified suite of programming languages, including the overall software model and a structuring language. Another elegant view can be seen by splitting the standard in two parts—common elements and programming languages. Common elements—data typing Within the common elements, the data types are defined. Data typing prevents errors in an early stage. It’s used to define the type of any parameter used.Full Story
Choosing between SSRs and EMRs involves multiple considerations.