Industrial communication networks. Fieldbus specifications - Application layer protocol specification. Type 20 elements Ingestion-build-117251 This document specifies the requirements

This document specifies the requirements

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Annex B (informative) Detailing rules for particular situations

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Industrial communication networks. Fieldbus specifications - Application layer protocol specification. Type 20 elements Ingestion-build-117251 This document specifies the requirements1 Scope The Fieldbus Application Layer (FAL) provides user programs with a means to access the fieldbus communication environment. In this respect, the FAL can be viewed as a window between corresponding application programs. This standard 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 20 fieldbus. The term time