UTILIZING MULTILANGUAGE INTERNATIONAL SOFTWARE STANDARDS FOR DISTRIBUTED PROCESS-CONTROL

All distributed control systems to date have relied on proprietary sof tware languages to implement distributed process control. These range from easy-to-understand function blocks and boolean logic algorithms t o more complex text language constructs. Standard programming language s with custom extensions for rear-time control also have been availabl e. International standards from the IEC now are available to allow mul ti-language, graphical, and real-time implementation. The paper will p resent these languages along with a modern WINDOWS presentation techni que to show the overall flexibility and benefits of international lang uage standards applied to process control.