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Wired M-Bus • Water Meters flowIQ® 2101/3100 TECHNICAL DESCRIPTION
Kamstrup A/S · Technical Description · 55121944_A1_GB_08.2016
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5.3.1
Primary addressing
A valid primary M-Bus address has a value between 000 and 250.
The primary M-Bus address is either configured specific in the flowIQ® 2101/3100 or the last digits of the meter
number are used.
As factory default, the primary address in flowIQ® 2101/3100 equals to the last 3 digits of the meter number. If the
last 3 digits are larger than 250 (e.g. 345) the first digit is ignored and the M-Bus water meter address is only
determined by the last 2 digits (e.g. 45).
During the ordering process specific primary addresses can be specified.
Changing the primary address can be performed in following ways:
•
Programming with METERTOOL HCW, via Optical Readout Head
•
Remotely, via M-Bus master
In connection with primary addressing of the M-Bus, two or more M-Bus water meters on the same M-Bus system
cannot have the same primary address. However, in connection with secondary addressing or enhanced secondary
addressing it is possible to distinguish M-Bus water meters with the same primary address on the same M-Bus.
Standard address range for an M-Bus water meter is 001... 250.
In addition to this, there are 4 special addresses that work as follows:
Adr. 000: Ordinary primary address reserved for non-configured M-Bus water meter.
Adr. 253: Used for secondary addressing.
Only M-Bus water meters selected by (enhanced) secondary addressing will reply.
Adr. 254: All M-Bus meters will reply to this address. The address can only be used in systems where only 1 M-Bus
water meter is connected.
Adr. 255: No M-Bus meter will reply to this address, but all will receive the message. This address makes it
possible e.g. to change the baud rate, on an entire system at the same time, by sending only one
telegram.