（IEC 61158-6-4-2014），英文名为Industrial communication networks - Fieldbus specifications - Part 6-4: Application layer protocol specification - Type 4 elements。
它（IEC 61158-6-4-2014）是在2014-08-19发布，在2014-08-19开始实施。
IEC 61158-6-4-:2014 defines the protocol provided to define the wire-representation of the service primitives defined in IEC 61158-5-4, and define the externally visible behavior associated with their transfer. This standard specifies the protocol of the Type 4 fieldbus application layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI application layer structure (ISO/IEC 9545). This secod edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. The main changes are: editorial improvements and corrections.
本标准文件共有82页。 IEC 61158-6-4-2014 Industrial communication networks - Fieldbus specifications - Part 6-4_ Application layer proto.pdf(1.47 MB)
