Norm

NEN-EN-IEC 61158-5-21:2012 en

Industriële communicatienetwerken - Veldbus specificaties - Deel 5-21: Definitie van de diensten van de toepassingslaag - Type 21 elementen

253,59

Over deze norm

Status Definitief
Aantal pagina's 3
Commissie Industrieel meten, regelen en automatiseren
Gepubliceerd op 01-06-2012
Taal Engels
The Fieldbus Application Layer (FAL) provides user programs with a means to access the fieldbus communication environment. In this respect, the FAL can be considered a window between corresponding application programs. This standard provides 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. 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.

Details

ICS-code 25.040.40
35.100.70
35.110
Nederlandse titel Industriële communicatienetwerken - Veldbus specificaties - Deel 5-21: Definitie van de diensten van de toepassingslaag - Type 21 elementen
Engelse titel Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements

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