Table of Contents
Advertisement
5 M-Bus Addressing
Primary, secondary and enhanced secondary addressing are supported. The master's integrated collision detector enables
wild card search for meters in connection with secondary and enhanced secondary addressing.
Using wild card search one or several of the digits of the meter's address are replaced by wild cards when searching for
meters.
5.1 Primary addressing (001-250)
Each meter must have a unique primary address between 001 and 250. If more than one meter have the same address, a
collision will occur and the meters cannot be read.
Kamstrup M-Bus modules automatically use the last 2-3 digits of the customer number as their primary address.
5.2 Secondary addressing (00000001-99999999)
Secondary addressing uses the last 8 digits of the meter number as M-Bus ID.
Kamstrup MULTICAL® meters use the customer number as their secondary address, which makes it possible to change the
secondary address.
5.3 Enhanced secondary addressing (00000001-99999999)/(00000001-99999999)
The meter's serial number is used for enhanced secondary addressing. A meter's serial number is unique and cannot be
changed after production.
6 M-Bus communication
M-Bus communication is half duplex allowing two-way communication with one M-Bus slave at a time.
The master's integrated port controller makes sure that communication is only possible on one serial port at a time.
6.1 Communication speed
M-Bus Master MultiPort 250L supports the following communication speeds:
•
300 Baud 8E1
•
2400 Baud 8E1
•
9600 Baud 8E1 (not via GPRS)
55121391_B1_GB_12.2013
21
Advertisement
Table of Contents
