Siemens WFx6 Serie Manual De Operación Y Instalacion página 103

Addressing
Each metering device is assigned a unique ID number (device number) from
the factory. This ID is transmitted by the metering device to the M-Bus system
as a secondary address.
The metering device data are generally queried using this secondary address.
Transmission of the cold quantity
In the case of device types with combined heat/cold metering (WFN..), a
virtual second metering device with the serial number of the heat meter +1 will
be displayed in the M-Bus system. This device is assigned the medium "Cold"
in the data record.
E.g.: ID Heat
Readout parameters heat/cold metering
The following parameters are read out of the heat meter and transmitted to the
M-Bus control unit:
• Device number (8-digit)
• Medium/software version
• Time/date
• Error status (readout 5 or 45
times per day)
Optional via application selection:
Transmission of impulse values
If water meters with impulse output are connected to the heat meter, the heat
meter transmits the impulse measurement data in addition to the heat meter-
ing data.
Readout parameters impulse measurement
• Device number (8-digit)
• Medium/software version
• Time/date
• Error status (readout 5 or 45
times per day)
Optional via application selection:
Siemens Building Technologies
00.123.456
• Error date
• Current consumption values
(heat or cold, volume)
• Due date
• Due date value (heat or cold)
• 15 monthly values (heat or cold)
• Flow
• Capacity
• Error date
• Current consumption values
• Due date (identical to heat meter)
• Due date value
• 15 monthly values
ID Cold 00.123.457
• Energy
• Suppl return o
temperature
A6V10816676_----_d 101 EN