PN EN 61158-5-21 : 2012已作废
INDUSTRIAL COMMUNICATION NETWORKS - FIELDBUS SPECIFICATIONS - PART 5-21: APPLICATION LAYER SERVICE DEFINITION - TYPE 21 ELEMENTS
出版：Polish Committee for Standardization
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基本信息
标准编号： PN EN 61158-5-21 : 2012
标准类别：Standard
出版单位：Polish Committee for Standardization
标准页数：0
标准简介
Gives the common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment as well as material specific to the Type 21 protocol.
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