標(biāo)準(zhǔn)號：IEC 61158-6-17-2007
中文標(biāo)準(zhǔn)名稱：工業(yè)通訊網(wǎng)絡(luò).現(xiàn)場總線規(guī)范.第6-17部分:應(yīng)用層協(xié)議規(guī)范.17型元件
英文標(biāo)準(zhǔn)名稱：Industrial communication networks - Fieldbus specifications - Part 6-17: Application layer protocol specification - Type 17 elements
標(biāo)準(zhǔn)類型：N18;P76
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：N18;P76
國際標(biāo)準(zhǔn)分類號：25.040.40;35.100.70;35.160
引用標(biāo)準(zhǔn)：IEC 61158-5-17;ISO/IEC 7498;ISO/IEC 8824-2;ISO/IEC 8825-1;ISO/IEC 9545;ISO/IEC 10731
適用范圍：1.1 GeneralThe fieldbus application layer (FAL) provides user programs with a means to access thefieldbus communication environment. In this respect, the FAL can be viewed as a “windowbetween corresponding application programs.”This standard provides common elements for basic time-critical and non-time-criticalmessaging communications between application programs in an automation environment andmaterial specific to Type 17 fieldbus. The term “time-critical” is used to represent thepresence of a time-window, within which one or more specified actions are required to becompleted with some defined level of certainty. Failure to complete specified actions withinthe time window risks failure of the applications requesting the actions, with attendant risk toequipment, plant and possibly human life.1.2 SpecificationsThe principal objective of this standard is to specify the syntax and behavior of the applicationlayer protocol that conveys the application layer services defined in IEC 61158-5-17.A secondary objective is to provide migration paths from previously-existing industrialcommunications protocols. It is this latter objective which gives rise to the diversity ofprotocols standardized in the IEC 61158-6 series.1.3 ConformanceThis standard does not specify individual implementations or products, nor does it constrainthe implementations of application layer entities within industrial automation systems.Conformance is achieved through implementation of this application layer protocolspecification.