IEEE 1588-2008 网络测量和控制系统用精密时钟同步协议

标准号：IEEE 1588-2008
中文标准名称：网络测量和控制系统用精密时钟同步协议
英文标准名称：Precision clock synchronization protocol for networked measurement and control systems
标准类型：M11
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：M11
国际标准分类号：39.040.99
引用标准：IEC 61158-3-2-2007;IEC 61158-4-2-2007;IEC 61158-5-2-2007;IEC 61158-5-10-2007;IEC 61158-6-2-2007;IEC 61158-6-10-2007;IEC 61784-1-2007;IEC 61784-2-2007;IEC 62026-3-2007;IEEE Std 802®;IEEE Std 802.1ABTM;IEEE Std 802.1QTM-2005;IEEE Std 802.3TM-2005;ISO/IEC 10
适用范围：This standard defines a protocol enabling precise synchronization of clocks in measurement and controlsystems implemented with technologies such as network communication, local computing, and distributedobjects. The protocol is applicable to systems communicating by local area networks supporting multicastmessaging including, but not limited to, Ethernet. The protocol enables heterogeneous systems that includeclocks of various inherent precision, resolution, and stability to synchronize to a grandmaster clock. Theprotocol supports system-wide synchronization accuracy in the sub-microsecond range with minimalnetwork and local clock computing resources. The default behavior of the protocol allows simple systemsto be installed and operated without requiring the administrative attention of users. The standard includesmappings to User Datagram Protocol (UDP)/Internet Protocol (IP), DeviceNet, and a layer-2 Ethernetimplementation. It includes formal mechanisms for message extensions, higher sampling rates, correctionfor asymmetry, a clock type to reduce error accumulation in large topologies, and specifications on how toincorporate the resulting additional data into the synchronization protocol. The standard permitssynchronization accuracies better than 1 ns. The protocol has features to address applications whereredundancy and security are a requirement. The standard defines conformance and management capability.There is provision to support unicast as well as multicast messaging. The standard includes an annex onrecommended practices. Annexes defining communication-medium-specific implementation details foradditional network implementations are expected to be provided in future versions of this standard.