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2 Kmstrup A/S • 5512853_C1_GB_01.2017

M-Bus Mster MultiPort 250D

Contents

1 Introduction 4

1.1 Design 4

2 Functionlity 5

2.1 Overview of functions 7

3 Connections 8

3.1 Overview of connections 9

3.2 Power supply 10

3.3 USB 10

3.4 RS-232 14

3.5 RS-485 15

3.6 Opticl eye 15

3.7 M-Bus Output 15

3.7.1 Current nd voltge 15

3.8 M-Bus Repeter Input 16

4 Cbling 17

4.1 Specil fetures of M-Bus Mster MultiPort 250D

4.2 Electricl conditions in n M-Bus network 18

4.2.1 M-Bus modules 18

4.3 Instlltion prmeters 18

4.3.1 Cble 19

4.3.2 Cble topology 20

4.3.3 Exmples of network sizes 23

5 M-Bus ddressing 24

5.1 Primry ddressing 24

5.2 Secondry ddressing 24

5.3 Enhnced secondry ddressing 24

6 M-Bus communiction 25

6.1 Communiction speed 25

6.2 Trnsprent reding 25

7 Opertion of M-Bus Mster MultiPort 250D 25

7.1 Keys 26

7.2 Light emitting diodes 26

7.2.1 Power 27

7.2.2 Request 27

7.2.3 Dt 27

7.2.4 Overlod 27

7.3 Disply 27

7.4 Menu overview 28

Kamstrup M-Bus Master MultiPort 250D User Manual

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