IEC 61139-3:20 23规定了无线单点数字通信接口(SDCI无线)。 这是IEC 61131-9中规定的单点数字通信接口(SDCI)技术的扩展。 本文档规定了W的无线通信服务和协议（根据ISO/OSI参考模型的物理层、数据链路层和应用层）？马斯特斯和W？设备。 笔记？本文档不包括与更高级别的系统（如现场总线）的集成。

IEC 61139-3:2023 specifies a wireless single-drop digital communication interface (SDCI wireless).
This is an extension to the single-drop digital communication interface (SDCI) technology that is specified in IEC 61131-9.
This document specifies the wireless communication services and protocol (physical layer, data link layer and application layer in accordance with the ISO/OSI reference model) for W？Masters and W？Devices.
NOTE？This document does not cover the integration into higher level systems such as fieldbuses.