CSN EN IEC 61139-3

CSN EN IEC 61139-3 This part of IEC 61139 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.
Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.