IEC 61158-5-21:2010(E) specifies the structure and services of the type 21 IEC fieldbus Application Layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498) and the OSI Application Layer Structure (ISO/IEC 9545). This standard cancels and replaces IEC/PAS 62573 published in 2008.
IEC 61158-5-21 Ed. 1.0 en:2010 History
IEC 61158-5-21 Ed. 2.0 b:2019
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IEC 61158-5-21 Ed. 2.0 en:2019
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IEC 61158-5-21 Ed. 1.0 en:2010
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IEC 61158-5-21 Ed. 1.0 b:2010
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