UM1759 Datasheet, PDF (1/50 Pages) STMicroelectronics – Wireless M-Bus firmware and application

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
June 2014
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