本文件规定了网络控制系统的通信协议。协议 使用web服务为网络控制提供对等通信。文件 描述第2层和第3层中的服务。 第2层（数据链路层）规范还描述了MAC子层与物理层的接口 层物理层提供了传输介质的选择。第三层（网络层），如 如EN 14908-1所述，使用IPv4和IPv6协议集成在UDP/IP通信中。交叉引用:EN 14908-4EN 14908-6EN 14908-2EN 14908-1EN 14908-3购买本文件时可获得的所有现行修订均包含在购买本文件中。

This document specifies a communication protocol for networked control systems. The protocol provides peer-to-peer communication for networked control using web-services. The document describes services in layer 2 and layer 3. The layer 2 (data link layer) specification also describes the MAC sub-layer interface to the physical layer. The physical layer provides a choice of transmission media. The layer 3 (network layer), as described in EN 14908-1, is integrated in UDP/IP communication using IPv4 and IPv6 protocols.Cross References:EN 14908-4EN 14908-6EN 14908-2EN 14908-1EN 14908-3All current amendments available at time of purchase are included with the purchase of this document.