Industrial communication networks - Fieldbus specifications - Part 5-23: Application layer service definition - Type 23 elements
Sprache: EN - englisch
Seitenzahl: 120 VDE-Artnr.: 251626
IEC 61158-5-25:2023 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 23 fieldbus. The term 'time-critical' is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.