DANSK DSF/FPREN 61804-2 PDF

This part of IEC 61804 is applicable to Function Blocks (FB) for process control. 208 This standard specifies FB by using the result of a harmonization work as regards several 209 elements. 210 a) The device model which defines the components of an IEC 61804-2 conformant device; 211 b) Conceptual specifications of FBs for measurement, actuation and processing. This includes 212 general rules for the essential features to support control, whilst avoiding details which stop 213 innovation as well as specialization for different industrial sectors; 214 c) The Electronic Device Description (EDD) technology, which enables the integration of real 215 product details using the tools of the engineering life cycle. 216 The standardization work for FB was carried out by harmonizing the description of concepts of 217 existing technologies. It results in an abstract level that allowed the definition of the common 218 features in a unique way. This abstract vision is called here the conceptual FB specification and 219 mapped to specific communication systems and their accompanying definitions by the industrial 220 groups.