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Wired M-Bus • Water Meters flowIQ® 2101/3100 TECHNICAL DESCRIPTION
Kamstrup A/S · Technical Description · 55121944_A1_GB_08.2016
25
flowIQ® 3100:
Byte
Field
Value
Description
96
DIF
42h
2 byte binary, monthly value
97
VIF
6Ch
Type G (Compound CP16)
98
Target Date
21h
CP16: 2321h = 2017-03-01
99
23h
100
DIF
02h
2 byte binary
101
VIF
FFh
Kamstrup specific vif: info code
102
20h
103
Info
00h
00 = no info codes
104
00h
105
DIF
06h
6 byte binary
106
VIF
FFh
Kamstrup specific vif: Config number
107
11h
108
Config Number
DDh
Config no: 175462DEDDh = 0100200013533
109
DEh
110
62h
111
54h
112
17h
113
00h
114
DIF
02h
2 byte binary
115
VIF
FFh
Kamstrup specific vif: Meter type
116
1Ah
117
Meter Type
03h
Meter Type: flowIQ3100 Cold Water
118
22h
119
DIF
02h
2 byte binary
120
VIF
FDh
Kamstrup specific vif: Software revision
121
0Eh
122
SW Revision
01h
Software revision: D1
123
04h
124
Checksum
xxh
125
Stop Character
16h
Note:
A target value may read as zero, until passing the set target date.
8.2
RSP_SKE response from flowIQ® 2101/3100
Reply from the M-Bus water meter (RSP_SKE) on request for communication status from M-Bus Master (REQ_SKE):
RSP_SKE:
Start
10h
C-field
0B h Code for RSP_SKE (ACD bit and DFC bit is always = 0)
A-field
6A h Slave address (e.g. address = 106)
Checksum
xx h
Stop
16 h
The ACD (Access Demand) and DFC (Data Flow Control) status bits (bit 5 and bit 4 respectively) in the C-field will
always be = 0 in the reply, which means that the M-Bus water meter does not have any time-critical (alarm) data
to send and has no buffer overflow, as the M-Bus water meter does not support time-critical data (alarm protocol).
But the (empty) RSP_SKE reply to REQ_SKE request ensures, that the M-Bus water meter will function in M-Bus
systems with other M-Bus interfaces, supporting time-critical data (alarm protocol) and using communication
status bit.