Xylem sensus PolluStat User Manual page 17

DIB Field
0 Message format
1 Heat Energy E1
2 Cooling Energy E3 7-8 bytes
3 Volume
4 Fw temp
5 Rt temp
6 Meter ID
7 Error flags
6.6.2.8 Sensus
In message format Sensus, two types of telegrams are transmitted from the module; the first contain information
collected from the PolluStat or PolluTherm F meter and the second information collected from meters connected
via the module's pulse inputs. Note that telegram 2 is only transmitted from the module if the pulse inputs are used.
When using the Sensus message format the transmit interval (see section 6.5) is doubled to compensate for the
additional telegrams transmitted in this message format, even if pulse inputs are not used and telegram 2 is not
transmitted.
The module configuration parameter "Pulse input configuration" specifies which of the three pulse inputs are con-
nected and whose data shall be read and transmitted by the module. Only the values configured to be included are
sent. If no inputs are selected, telegram 2 is not sent.
Note: in case of errors in reading the data from the meter the function field in the DIF is set to indicate "value during
error state" (M-Bus standard EN 13757-3:2013). In such cases the VIF and data part should be ignored. Since the
unit of the input can be unknown in such cases it is set to dimensionless in the VIF, e.g., B440FD3A00000000 = pulse
counter 1, no unit, with "value during error state".
Table 17 and Table 18 list the indexes the information of both telegrams of this message format.
Size Data type
1 byte -
6-7 bytes INT32
INT32
6 bytes INT32
4 bytes INT16
4 bytes INT16
6 bytes According to
M-Bus EN13757-3
identification field
4 bytes
Description
0x29 (Combined heat/cooling)
Energy consumption (Wh, J, Cal, MBTU)
0406xxxxxxxx = MWh, 3 decimals = kWh
040Exxxxxxxx = GJ, 3 decimals
04FB0Dxxxxxxxx = Gcal, 3 decimals
04863Dxxxxxxxx = MMBTU, 3 decimals
Energy consumption (Wh, J, Cal, MBTU)
841006xxxxxxxx = MWh, 3 decimals = kWh
84100Exxxxxxxx = GJ, 3 decimals
8410FB0Dxxxxxxxx = Gcal, 3 decimals
8410863Dxxxxxxxx = MMBTu, 3 decimals
Volume (m )
3
0413xxxxxxxx = m , 3 decimals
3
Forward temperature (°C)
025Bxxxx, °C
Return temperature (°C)
025Fxxxx, °C
Meter ID
0C78xxxxxxxx
Error and warning flags
01FD17xx
Table 16: Message format, Combined heat/cooling
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