標(biāo)準(zhǔn)號：DIN EN 61158-4-4-2008
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4-4部分:數(shù)據(jù)聯(lián)絡(luò)層協(xié)議規(guī)范.4型元件.僅為CD-ROM
英文標(biāo)準(zhǔn)名稱：Industrial communication networks - Fieldbus specifications - Part 4-4: Data-link layer protocol specification - Type 4 elements (IEC 61158-4-4:2007); English version EN 61158-4-4:2008, only on CD-ROM
標(biāo)準(zhǔn)類型：N18;P76
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：2008/9/1 12:00:00
中國標(biāo)準(zhǔn)分類號：N18;P76
國際標(biāo)準(zhǔn)分類號：35.100.20;35.160;35.240.50
引用標(biāo)準(zhǔn)：IEC 61158-2;IEC 61158-3-4;ISO/IEC 7498-1;ISO/IEC 7498-3;ISO/IEC 10731
適用范圍：1.1 GeneralThe data-link layer provides basic time-critical messaging communications between devices in anautomation environment.This protocol provides a means of connecting devices through a partial mesh network, such thatmost failures of an interconnection between two devices can be circumvented. In common practicethe devices are interconnected in a non-redundant hierarchical manner reflecting application needs1.2 SpecificationsThis standard specifiesa) procedures for the timely transfer of data and control information from one data-link user entityto a peer user entity, and among the data-link entities forming the distributed data-link serviceprovider;b) the structure of the fieldbus DLPDUs used for the transfer of data and control information by theprotocol of this standard, and their representation as physical interface data units.1.3 ProceduresThe procedures are defined in terms ofa) the interactions between peer DL-entities (DLEs) through the exchange of fieldbus DLPDUs;b) the interactions between a DL-service (DLS) provider and a DLS-user in the same systemthrough the exchange of DLS primitives;c) the interactions between a DLS-provider and a Ph-service provider in the same system throughthe exchange of Ph-service primitives.1.4 ApplicabilityThese procedures are applicable to instances of communication between systems which supporttime-critical communications services within the data-link layer of the OSI or fieldbus referencemodels, and which require the ability to interconnect in an open systems interconnectionenvironment.Profiles provide a simple multi-attribute means of summarizing an implementation’s capabilities, andthus its applicability to various time-critical communications needs.1.5 ConformanceThis standard also specifies conformance requirements for systems implementing theseprocedures. This standard does not contain tests to demonstrate compliance with suchrequirements.