標準號：IEEE 1588-2008
中文標準名稱：網絡測量和控制系統用精密時鐘同步協議
英文標準名稱：Precision clock synchronization protocol for networked measurement and control systems
標準類型：M11
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：M11
國際標準分類號：39.040.99
引用標準：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
適用范圍：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.