algodue ELETTRONICA M-Bus Communication Module User Manual
- June 12, 2024
- algodue ELETTRONICA
Table of Contents
M-Bus Communication Module
User Manual
Subject to change without prior notice
M-Bus Communication Module
PICTURE 
COMMUNICATION MODULE
The communication protocol and the relevant software are available at
www.algodue.com
WARNING! Device installation and use must be carried out only by
qualified professional staff. Switch off the voltage before device
installation.
CABLE STRIPPING LENGTH
For the module terminal connection, cable stripping length must be 5 mm. Use a blade screwdriver with 0.8×3.5 mm size, fastening torque 0.5 Nm. Refer to picture B.
OVERVIEW
Refer to picture C:
- M-Bus connection terminals
- Optical COM port
- SET DEFAULT key
- Power supply LED
- Communication LED
CONNECTIONS
A master interface is required between PC and the M-Bus network to adapt RS232/USB port to network. The maximum number of modules to be connected can change according to the used master interface. For the connection among the different modules, use a cable with a twisted pair and a third wire. After making M-Bus connections, combine each M-Bus module with a single meter: place them side by side, perfectly lined up, with module optical port facing the meter optical port. Refer to picture D.
LEDS FUNCTIONALITY
Two LEDs are available on the module front panel to provide power supply and communication status:
| LED COLOUR | SIGNALLING | MEANING |
|---|
POWER SUPPLY LED
–| Power OFF| The module is OFF
GREEN| Always ON| The module is ON
COMMUNICATION LED
–| Power OFF| The module is OFF
GREEN| Slow blink (2 s OFF time)| M-Bus communication=OK
Meter communication=OK
RED| Fast blink (1 s OFF time)| M-Bus communication=fault/missing
Meter communication=OK
RED| Always ON| Meter communication=fault/missing
GREEN/RED| Alternating colours for 5 s| SET DEFAULT procedure in progress
M-BUS MASTER APPLICATION
M-Bus Master is an application software which allows to manage M-Bus module communication. With this application software it is possible to:
- detect and communicate with M-Bus modules
- change M-Bus module settings
- display the detected measurements of the energy meter connected to the M-Bus module
- set the measurement rate and type to be detected
To use M-Bus Master, follow the instructions:
- Connect one or more modules on M-Bus network as previously described.
- Place one counter for each M-Bus module: module optical port must face up to meter optical port.
- Install M-Bus Master on PC.
- At the end of installation, run M-Bus Master.
- Carry out a search for the available M-Bus modules on the network.
SET DEFAULT FUNCTION
SET DEFAULT function allows to restore on the module default settings (e.g. in
case of M-Bus primary address forgotten). To restore default settings, keep
SET DEFAULT key pressed for at least 5 s, communication LED will blink
green/red for 5 s. At the end of SET DEFAULT procedure, communication LED will
be red continuously indicating to release the key.
Default settings:
M-Bus primary address = 000
M-Bus secondary address (ID number) = Progressive value on 8 digits
M-Bus communication speed = 2400 bps
Mask of data detected on the meter by the module = Default
TECHNICAL FEATURES
Data in compliance with EN 13757-1-2-3 standard.
POWER SUPPLY
Through bus connection|
M-BUS COMMUNICATION
Protocol| M-Bus
Port| 2 screw terminals
Communication speed| 300 … 9600 bps
SERIAL COMMUNICATION
Type| Optical port
Communication speed| 38400 bps
STANDARDS COMPLIANCE
M-BUS| EN 13757-1-2-3
EMC| EN 61000-6- 2, EN 61000-4-2,
EN 61000-4-3, EN 61000-4-4,
EN 61000-4-5, EN 61000-4-6,
EN 61000-4-11, EN 55011 Class A
Safety| EN 60950
WIRE SECTION FOR TERMINALS AND FASTENING TORQUE
Terminals| 0.14 … 2.5 mm2 / 0.5 Nm
ENVIRONMENTAL CONDITIONS|
Operating temperature| -15°C … +60°C
Storage temperature| -25°C … +75°C
Humidity| 80% max without condensation
Protection degree| IP20
Algodue Elettronica Srl
Via P. Gobetti, 16/F
28014 Maggiora (NO), ITALY
Tel. +39 0322 89864
+39 0322 89307
www.algodue.com
support@algodue.it