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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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7.2
Setting Date and time
To synchronize the time in the meter towards a main application real time clock, the time and date may be sent to
the flowIQ® 2101/3100 using the datagram format below.
To avoid disturbing the internal loggers, setting the time must be done in due time before or after an hour shift.
Typically the date/time is set once each 24 hour.
Start character
68h
L-field
09h
L-field
09h
Start character
68h
C-field
53h
(FCB=0) or 73h (FCB=1)
A-field
xxh or FDh
CI-field
51h
Record
04h
DIF: 4 bytes, compound data type F
Date and time
6Dh
VIF: Date and time, e.g. 02-09-04 13:10 standard time, valid
Date, time LSB
0Ah
IV, 0, MI5, MI4, MI3, MI2, MI1, MI0
Date, time
2Dh
SU, HY1, HY0, H4, H3, H2, H1, H0
Date, time
82h
Y2, Y1, Y0, D4, D3, D2, D1, D0
Date, time MSB 09h
Y6, Y5, Y4, Y3, M3, M2, M1, M0
Checksum
Xxh
Stop character
16h
As flowIQ® 2101/3100 uses two digits to indicate year (00... 99), the flowIQ® 2101/3100 M-Bus always sends
information concerning year as 2000... 2099 (bit HY1:HY0 always = 01 in ‘Date and time record’, VIF = 6Dh and DIF
= 04h, compound data type F).
Note: See EN13757-3 Annex A ‘Coding of data records’ for details on how to decode the Date/Time data type.
7.3
Application select/reset
In connection with application reset the flowIQ® 2101/3100 M-Bus water meter returns an ‘ACK’. Nothing further
happens and nothing is reset.