IEC 61804-2 Ed. 1.0 en:2004, Function blocks (FB) for process control - Part 2: Specification of FB concept and Electronic Device Description Language (EDDL)

is applicable to Function Blocks (FB) for process control and specifies the Electronic Device Description Language (EDDL), specifies FB by using the result of harmonization work as regards several elements. defines a subset of the requirements of IEC 61804-1 (hereafter referred to as Part 1) only, while Part 1 describes requirements for a distributed system.