35.110 网络 标准查询与下载
共找到 1597 条与 网络 相关的标准，共 107 页
Industrial communication networks - Fieldbus specifications - Part 3-19: Data-link layer service definition - Type 19 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-24
- 实施
Industrial communication networks - Fieldbus specifications - Part 3-12: Data-link layer service definition - Type 12 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-24
- 实施
Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer protocol specification - Type 19 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 4-2: Data-link layer protocol specification - Type 2 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 3 - 2: Data-link layer service definition - Type 2 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 4-24: Data-link layer protocol specification - Type 24 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Amendment 1 - Industrial communication networks - Fieldbus specifications - Part 3 - 2: Data-link layer service definition - Type 2 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 4-4: Data-link layer protocol specification - Type 4 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 4-3: Data-link layer protocol specification - Type 3 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 5-23: Application layer service definition - Type 23 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
Industrial communication networks - Fieldbus specifications - Part 5-25: Application layer service definition - Type 25 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-18
- 实施
General The DLL provides basic time-critical data communications between devices in an automated environment. Type 21 provides priority-based cyclic and acyclic data communication using an internal collision-free@ full-duplex dual-port Ethernet switch technology. For wide application in various automation applications@ Type 21 does not restrict the cyclic/acyclic scheduling policy in the DLL. Specifications This document describes: a) procedures for the timely transfer of data and control information from one data link user entity to a peer user entity@ and among the data link entities forming the distributed data link service provider; b) procedures for giving communication opportunities based on ISO/IEC/IEEE 8802-3 MAC@ with provisions for nodes to be added or removed during normal operation; c) structure of the fieldbus data link protocol data units (DLPDUs) used for the transfer of data and control information by the protocol of this document@ and their representation as physical interface data units. Procedures The procedures are defined in terms of: a) the interactions between peer data link entities (DLEs) through the exchange of fieldbus DLPDUs; b) the interactions between a data link service (DLS) provider and a DLS-user in the same system through the exchange of DLS primitives; c) the interactions between a DLS-provider and a physical layer service provider in the same system through the exchange of Ph-service primitives. Applicability These procedures are applicable to instances of communication between systems that support time-critical communications services in the data link layer of the OSI or fieldbus reference models@ and that require the ability to interconnect in an open systems interconnection environment. Profiles provide a simple multi-attribute means of summarizing an implementation??s capabilities@ and thus its applicability to various time-deterministic communications needs. Conformance This document also specifies conformance requirements for systems implementing these procedures. This document does not contain tests to demonstrate compliance with such requirements.
Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
- 2019-04-24
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 part of IEC 61158 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 4 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. This International Standard defines in an abstract way the externally visible service provided by the Type 4 fieldbus application layer in terms of: a) an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service@ b) the primitive actions and events of the service; c) the parameters associated with each primitive action and event@ and the form which they take; and d) the interrelationship between these actions and events@ and their valid sequences. The purpose of this document is to define the services provided to: 1) the FAL user at the boundary between the user and the application layer of the fieldbus reference model@ and 2) Systems Management at the boundary between the application layer and Systems Management of the fieldbus reference model. This document specifies the structure and services of the Type 4 fieldbus application layer@ in conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI application layer structure (ISO/IEC 9545). FAL services and protocols are provided by FAL application-entities (AE) contained within the application processes. The FAL AE is composed of a set of object-oriented application service elements (ASEs) and a layer management entity (LME) that manages the AE. The ASEs provide communication services that operate on a set of related application process object (APO) classes. One of the FAL ASEs is a management ASE that provides a common set of services for the management of the instances of FAL classes. Although these services specify@ from the perspective of applications@ how request and responses are issued and delivered@ they do not include a specification of what the requesting and responding applications are to do with them. That is@ the behavioral aspects of the applications are not specified; only a definition of what requests and responses they can send eceive is specified. This permits greater flexibility to the FAL users in standardizing such object behavior. In addition to these services@ some supporting services are also defined in this document to provide access to the FAL to control certain aspects of its operation. Specifications The principal objective of this document is to specify the characteristics of conceptual application layer services suitable for time-critical communications@ and thus supplement the OSI Basic Reference Model in guiding the development of application layer protocols for time-critical communications. 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 services standardized as the various Types of IEC 61158@ and the corresponding protocols standardized in IEC 61158-6 (all subparts). This specification may be used as the basis for formal application programming interfaces. Nevertheless@ it is not a formal programming interface@ and any such interface will need to address implementation issues not covered by this specification@ including a) the sizes and octet ordering of various multi-octet service parameters@ and b) the correlation of paired request and confirm@ or indication and response@ primitives. Conformance This document 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 this application layer service definition standard. Instead@ conformance is achieved through implementation of conforming application layer protocols that fulfill the Type 2 application layer services as defined in this document.
Industrial communication networks - Fieldbus specifications - Part 5-4: Application layer service definition - Type 4 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
- 2019-04-24
Industrial communication networks - Fieldbus specifications - Part 3-25: Data-link layer service definition - Type X elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
Industrial communication networks - Fieldbus specifications - Part 5-19: Application layer service definition - Type 19 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
Industrial communication networks - Fieldbus specifications - Part 5-10: Application layer service definition - Type 10 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
Industrial communication networks - Fieldbus specifications - Part 4-25: Data-link layer protocol specification - Type 25 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
Industrial communication networks - Fieldbus specifications - Part 5-12: Application layer service definition - Type 12 elements
- ICS
- 35.110
- CCS
- 发布
- 2019-04-10
- 实施
本标准规定了基于窄带物联网（NB-IoT）技术的燃气智能抄表系统（以下简称系统）的术语和定义、缩略语、系统和原理、技术要求、试验方法、检验规则等。 本标准适用于采用NB-IoT技术进行通信的民用燃气智能抄表系统的设计、建设及检验。 注：民用含居民用户和一般商业用户。
Gas smart reading meter system based on NB-IoT technology
- ICS
- 35.110
- CCS
- N12
- 发布
- 2019-04-08
- 实施
- 2019-05-01
