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ZENODO
Other literature type . 2025
Data sources: ZENODO
ZENODO
Other literature type . 2025
Data sources: Datacite
ZENODO
Other literature type . 2025
Data sources: Datacite
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RS485MM: A Distributed Multi-Master Extension for RS485 with Token Ring Arbitration, Multi-Slot Join, and Modbus RTU Backward Compatibility

descriptionPublicationkeyboard_double_arrow_right Other literature type 17 Nov 2025 English Publisher:Zenodo
Authors: Lorenzetto, Cristian;

doi: 10.5281/zenodo.17628938 , 10.5281/zenodo.17628939

RS485MM: A Distributed Multi-Master Extension for RS485 with Token Ring Arbitration, Multi-Slot Join, and Modbus RTU Backward Compatibility

Abstract

This document specifies RS485MM, a distributed multi-master protocol operating on top of the RS485 physical layer. RS485MM introduces deterministic token-based arbitration, multi-slot join procedures, dynamic priorities, urgent preemption, and distributed topology consensus, while maintaining full backward compatibility with Modbus RTU slave devices. The protocol enables RS485 networks to operate in a collision-free multi-master mode using existing hardware, making it suitable for residential HVAC systems, home automation, and retrofits.

Keywords

Multi-Master/slave, RS485

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green