IEC 61158-6-7:2007
工业通讯网络.数据总线规范.第6-7部分:应用层协议规范.7型元件

Industrial communication networks - Fieldbus specifications - Part 6-7: Application layer protocol specification - Type 7 elements

标准号

IEC 61158-6-7:2007

发布

2007年

发布单位

国际电工委员会

当前最新

IEC 61158-6-7:2007

 

 

引用标准

IEC 60559 IEC 61158-3-7 IEC 61158-4-7 IEC 61158-5-7 ISO/IEC 7498-1 ISO/IEC 7498-18825 ISO/IEC 8824 ISO/IEC 9506-2 ISO/IEC 9545

被代替标准

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

适用范围

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 7 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 61158-5-7. 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 parts of 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.There is no conformance of equipment to the application layer service definition standard. Instead, conformance is achieved through implementation of this application layer protocol specification.

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