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sklademVydáno: 2019-04-10
IEC 61158-5-21:2019
Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 5-21: Définition des services de la couche application - Éléments de type 21
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| Označení normy: | IEC 61158-5-21:2019 |
| Vydáno: | 2019-04-10 |
| Edice: | 2 |
| ICS: | 25.040.40 |
Popis
IEC 61158-5-21:2019
IEC 61158-5-21:2019 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 second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
•added Write and Read service;
•miscellaneous editorial corrections.