
TECHNICAL DESCRIPTION Wired M-Bus • Water Meters flowIQ® 2101
/
3100
8
Kamstrup A/S · Technical Description · 55121944_A1_GB_08.2016
5.3.2
Secondary addressing
A valid secondary M-Bus address has a value between 00000000 and 99999999 and is in the flowIQ® 2101/3100
identical to the unique serial number.
In connection with secondary addressing, the M-Bus water meters are selected via the primary address 253 with its
8 byte long complete M-Bus ID consisting of:
•
M-Bus ID number. Default from Kamstrup: The last 8 digits in the meter number / customer number (4 bytes)
•
Manufacturer ID = ASCII characters ‘KAM’ for Kamstrup encoded to the value 2D2Ch (2 bytes)
•
Version/generation ID number for MULTICAL® 21 = 34h (1 byte)
•
Device type ID (1 byte)
These 8 bytes make up the secondary address of the M-Bus water meter. It is possible to replace the individual
bytes with wildcard characters. See chapter
Selection of M-Bus water meter via secondary address
(and deselecting other M-Bus water meter):
Start character 68h
L-field
0Bh
L-field
0Bh
Start character 68h
C-field
53h or 73h
A-field
FDh
CI-field
52h
ID No. LSB
37 or FF BCD
E.g. M-Bus ID number = 4118737
ID No.
87 or FF BCD
ID No.
11 or FF BCD
ID No. MSB
04 or FF BCD
Man. ID LSB
2Dh or FFh
KAM encoded to 2D2Ch
Man. ID MSB
2Ch or FFh
Version ID
flowIQ 2101
1Dh
Version ID
flowIQ 2101
1Fh
Device ID
04h, 07h, 0Ah, 0Bh, 0Ch, or 0Dh (see also ID numbers) or FFh
Checksum
Xxh
Stop character 16h
As long as the M-Bus water meter is selected, it will reply to primary address 253, which is dedicated to secondary
addressing. The M-Bus water meter is deselected either by
•
sending a new selection via primary address 253 with a secondary address – different from the one of the
M-Bus water meter (by means of which another M-Bus meter may be selected, if necessary)
or
•
sending normalization (SND_NKE) to primary address 253.