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TECHNICAL DESCRIPTION Wired M-Bus • Water Meters flowIQ® 2101
/
3100
18
Kamstrup A/S · Technical Description · 55121944_A1_GB_08.2016
The M-Bus water meter will also reply with an acknowledgement (ACK) when receiving a set of baud rate telegrams
(CI-field = B8h... BFh), but will ignore the contents, as the M-Bus interface is furnished with automatic baud rate
detection.
The individual datagram for writing data in the M-Bus water meter are shown subsequently.
7.1
Setting Primary M-Bus address
A dedicated register in the flowIQ® 2101/3100 is used for storing the primary address. This register may be
overwritten with a new M-Bus primary address using the datagram format below.
Start character
68h
L-field
06h
L-field
06h
Start character
68h
C-field
53h
(FCB=0) or 73h (FCB=1)
A-field
xxh or FDh
CI-field
51h
Record
01h
DIF: 1 byte, binary
Address
7Ah
VIF: Address
Primary add.
xxh
XX = 01h... FAh. For primary address = 1... 250
Checksum
xxh
Stop character
16h
Note:
During the ordering process the primary address for each meter can be specified. Normally it is the last 2-3
digits of the customer number.