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Kamstrup M-Bus User Manual

Kamstrup M-Bus
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M-Bus
Technical Description
Kamstrup A/S
Industrivej 28, Stilling
DK-8660 Skanderborg
TEL: +45 89 93 10 00
FAX: +45 89 93 10 01
info@kamstrup.com
www.kamstrup.com
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Kamstrup M-Bus Specifications

General IconGeneral
Input Voltage230 VAC
Short-circuit ProtectionYes
Overload ProtectionYes
Protection ClassIP20
M-Bus Voltage36 V DC
Frequency50 Hz
Storage Temperature-20-70°C
Dimensions90 x 70 x 60 mm

Summary

1. Technical Description M-Bus

Introduction to M-Bus Technical Description

Details the use of Kamstrup's M-Bus system for electronic reading of district heat meters, emphasizing data security and self-configuring capabilities.

2. M-Bus System

M-Bus Slave Addressing

Details primary and secondary addressing methods for M-Bus slave identification, using customer numbers and special addresses.

3. M-Bus Master

M-Bus Master Overview

Describes two versions, components, front plate LEDs (Power, Overload, Request, Data), and its function as an RS232/optical repeater.

4. M-Bus Slave for MULTICAL®

M-Bus Slave Functionality for MULTICAL®

Explains the slave's role, installation in MULTICAL®, automatic data collection every 12 hours, and initiation process.

5. M-Bus Slave for MULTICAL® Compact/401

M-Bus Slave for Compact/401

Describes the slave module for Compact/401, its intelligence, versions, and pulse input usage with MULTICAL® 401.

6. M-Bus Slave for Kamstrup 162/382/351 Combi

M-Bus Slave for Kamstrup Combi

Details the slave for electricity meters, its pulse input, dimensions, and auto-detection of meter type.

7. M-Bus Cascade Module

Cascade Module Functionality

Explains how the module expands M-Bus network capacity and cable length, and its connection to M-Bus Masters.

8. M-Bus Modem

M-Bus Modem Functionality

Describes reading up to 40 meters via modem, mounting options, and reading software like PcModem.

9. Installation of M-Bus

M-Bus System Topology

Explains the parallel bus topology, starting from the master and connecting slaves sequentially, with error detection.

9. Installation of M-Bus (Continued)

Power and M-Bus Connections

Shows wiring details for 230 VAC supply, M-Bus terminals (24/25), and serial data output on the M-Bus Master.

10. Data Reading of M-Bus

PcM-Bus Reading Program

Explains how data is read using a PC program via IR-head or data cable connected to the M-Bus Master.

11. Protocol

M-Bus Commands Overview

Introduces commands between M-Bus Master and Slave, and Slave to Master, relevant for heat meters.

Master to Slave Commands

Details commands like REQ_UD2, SND_NKE, and SND_UD1, including their function and format.

11. Protocol (Continued)

Communication Process: Initialization

Outlines the step-by-step process for initializing the M-Bus network from master to slave.

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