IEC 61158-6-8:2007
Industrial communication networks - Fieldbus specifications - Part 6-8: Application layer protocol specification - Type 8 elements

Standard No.

IEC 61158-6-8:2007

Release Date

2007

Published By

International Electrotechnical Commission (IEC)

Latest

IEC 61158-6-8:2007

Replace

IEC 65C/476/FDIS:2007 IEC 61158-6:2003

Scope

1.1 General 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 8 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. 1.2 Specifications The principal objective of this standard is to specify the syntax and behavior of the application layer protocol that conveys the application layer services defined in IEC 61158-5-8. A secondary objective is to provide migration paths from previously-existing industrial communications protocols. It is this latter objective which gives rise to the diversity of protocols standardized in the IEC 61158-6 series. 1.3 Conformance This standard does not specify individual implementations or products, nor does it constrain the implementations of application layer entities within industrial automation systems.Conformance is achieved through implementation of this application layer protocol specification.

IEC 61158-6-8:2007 Referenced Document

• IEC 60559 Binary floating-point arithmetic for microprocessor systems
• IEC 61158-3-8 Industrial communication networks - Fieldbus specifications - Part 3-8: Data-link layer service definition - Type 8 elements
• IEC 61158-4-8 Industrial communication networks - Fieldbus specifications - Part 4-8: Data-link layer protocol specification - Type 8 elements
• IEC 61158-5-8 Industrial communication networks - Fieldbus specifications - Part 5-8: Application layer service definition - Type 8 elements
• ISO/IEC 7498 Information processing systems; Open Systems Interconnection; basic reference model; Part 4: Management framework
• ISO/IEC 8822 Amendment 2 - Information technology -- Open Systems Interconnection -- Presentation service definition - Nested connections functional unit
• ISO/IEC 8824 Information technology; open systems interconnection; specification of abstract syntax notation one (ASN.1)
• ISO/IEC 8825 Information technology; open systems interconnection; specification of basic encoding rules for abstract syntax notation one (ASN.1)
• ISO/IEC 9545 Information technology - Open Systems Interconnection - Application layer structure

IEC 61158-6-8:2007 history

• 2007 IEC 61158-6-8:2007 Industrial communication networks - Fieldbus specifications - Part 6-8: Application layer protocol specification - Type 8 elements

IEC 61158-6-8:2007 Industrial communication networks - Fieldbus specifications - Part 6-8: Application layer protocol specification - Type 8 elements has been changed from IEC 61158-6:2003 Digital data communication for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application layer protocol specification.