As the Fieldbus Foundation (FF) function block specification was being developed, I became aware of the work by International Electrotechnical Commission, IEC, on function block modeling. The IEC TC65C/WG6 (now SC65B/WG15) committee had produced some draft documents that would eventually become the IEC61499 Function Block Standard. This standard defines abstract models that may be used …
Category Archive: Fieldbus
Oct
23
Control Performance of Fieldbus Installations
When planning or designing a fieldbus installation, it is important to consideration where the control will reside. The function block set supported by fieldbus devices may be used to address many common control applications. If you are dealing with a slow process then where the control is done may have little impact on the observed …
Oct
09
Basics of Fieldbus
When the Fieldbus Foundation was established, I lead the team that wrote the Function Block Application Process Specifications. This was a unique experience since it offered a rare opportunity to work with and to get to know some of the best control engineers from Siemens, Yokogawa, Honeywell, Leeds and Northrup, Foxboro, ABB, Smar and others …
