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Standard

IEC 61158-5-26:2023 ED2

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Abstract

IEC 61158-5-26:2023 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 26 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. This document defines in an abstract way the externally visible service provided by the Type26 fieldbus application layer in terms of: an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service; the primitive actions and events of the service; the parameters associated with each primitive action and event, and the form which they take; and the interrelationship between these actions and events, and their valid sequences.

Products specifications

  • Standard from IEC
  • Published:
  • Edition: 2
  • Document type: IS
  • Pages
  • Publisher: IEC
  • Distributor: IEC
  • ICS: 25.040.40
  • ICS: 35.100.70
  • ICS: 35.110
  • International TC: TC 65/SC 65C

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