UM1759 datasheet(1/50 Pages) STMICROELECTRONICS

Part #	UM1759

Description	Wireless M-Bus firmware and application

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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June 2014

DocID026279 Rev 1

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UM1759

User manual

Wireless M-Bus firmware and application

Introduction

The M-Bus (meter bus) is a common standard used for AMR implementation in remote

energy meter readers based on European standards (physical and link layer: EN 13757-2;

application layer: EN 13757-3). The M-Bus is also compliant with European Standard

EN 1434 on heat meters.

The M-Bus interface is very cost effective, because it is designed for communication over

twisted pair cables. For long distance communication, it supports all network configurations

(linear, star, etc.), except for ring networks. When queried, the meters send data to a

concentrator which can be accessed either locally or remotely.

A radio variant of M-Bus, Wireless M-Bus, is also specified in EN 13757-4.

The Wireless Meter Bus is an open standard for Automatic Meter Reading at sub-1 GHz RF.

The relevant standards are:

• European standard prEN 13757-4:2011 Wireless meter readout

• European standard EN 13757-3:2004 Dedicated application layer (in common with M-

Bus)

• ETSI EN 300 220 v2.3.1

The Wireless M-Bus firmware stack is based on EN 13757-4:2011.10 (Communication

systems for meters and remote reading of meters - Part 4: Wireless meter readout (Radio

meter reading for operation in SRD bands)). This European Standard specifies the required

physical and link layer parameters for systems using radio to read remote meters, especially

for short range device (SRD) unlicensed telemetry bands. The standard encompasses

systems for walk-by, drive-by and fixed installations.

Figure 1. Basic Wireless M-Bus architecture

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