IEC 61131-3 – What Is This
The International Electrotechnical Commission is a non-profit group that creates electrical standards. In 1993 the group published the IEC 61131-3 standard. In 1993 the group published the IEC 61131-3 standard containing the following eight parts: General information, Requirements and tests for equipment, Languages of programming, User guidelines, Communications, Messages, and Fuzzy logic control.