Communication with meters ABB SVM
The calorimetrical counter ABB F4 by the SVM company serves for the invoicing measurement of the heat or cool energy. It contains a big number of read values and historical data. The number of messages depends on the presence of extended cards (card for measuring maxima of flows and powers, rate card).
Reading all messages (including history, maxima, etc.) it more demanding action because the order of individual messages has to be kept. In the reading mode of all messages there has to be set the FcbAttr variable to 1 (see FCB flag handling).
If only some selected values are to be received from the meter, then it is handy to use the PmaCommGroup object. In this object (or by data extension ExtComm) the variables only for desired values can be defined. The value of the "ItemID" configurator can be for example: "sa254.M1.Energy", "sa1.M1.TemperFor", etc.
The PmaCommGroup object can be used only for reading the current state (only values that can be received by the "Reading of measured values (F4 meter)" message). The PmaCommMsg object must be used for reading the history data.
Preset message types for the PmaCommMsg object:
- Reading of measured values (F4 meter):
This is the basic message for reading the data. If the FcbAttr variable is set to 0 in this message, then reading only these data is required and the next following messages cannot be called. If it is set to 1, then the next messages have to be called.
There are following variables on the "Data-received" tab: Header of M-BUS message Energy (accumulated energy [GJ]), Volume (accumulated volume for energy calculation [m3]), VolumeWaterMeter (accumulated volume of watermeter [m3]), TemperForward (Forward temperature [°C]), TemperReturn (Return temperature [°C]), TemperDiff (Temperature difference [°C]), OnTime (number of days since switched on), OperTime (number of days of operation time), Flow (instantaneous flow [m3/h]), Power (instantaneous power [kW]), Date (current date and time), PulseCount1 (pulse counter, input 1), PulseCount2 (pulse counter, input 2).
This is the basic message for reading the data. If the FcbAttr variable is set to 0 in this message, then reading only these data is required and the next following messages cannot be called. If it is set to 1, then the next messages have to be called.
There are following variables on the "Data-received" tab: Header of M-BUS message Energy (accumulated energy [GJ]), Volume (accumulated volume for energy calculation [m3]), VolumeWaterMeter (accumulated volume of watermeter [m3]), TemperForward (Forward temperature [°C]), TemperReturn (Return temperature [°C]), TemperDiff (Temperature difference [°C]), OnTime (number of days since switched on), OperTime (number of days of operation time), Flow (instantaneous flow [m3/h]), Power (instantaneous power [kW]), Date (current date and time), PulseCount1 (pulse counter, input 1), PulseCount2 (pulse counter, input 2).
- Reading of values history (F4 meter):
This message has to be called 37-times one after the other and the history of 37 monthly reading is sequentially read.
There are following variables on the "Data-received" tab: Header of M-BUS message Energy (accumulated energy [GJ]), Volume (accumulated volume for energy calculation [m3]), VolumeWaterMeter (accumulated volume of watermeter [m3]), PulseCount1 (accumulated pulse number, input 1), PulseCount2 (accumulated pulse number, input 2), StorageNr (index of history, 3-39), Date (history date and time).
This message has to be called 37-times one after the other and the history of 37 monthly reading is sequentially read.
There are following variables on the "Data-received" tab: Header of M-BUS message Energy (accumulated energy [GJ]), Volume (accumulated volume for energy calculation [m3]), VolumeWaterMeter (accumulated volume of watermeter [m3]), PulseCount1 (accumulated pulse number, input 1), PulseCount2 (accumulated pulse number, input 2), StorageNr (index of history, 3-39), Date (history date and time).
- Reading of maximum values history (F4 meter):
The message can be called only if the meter includes the card for measuring maxima of flows and powers. This message has to be called 128-times one after the other and the history of maxima of 6-hours (the number of histories and the range of hours can be set on the tab even in a different way) is sequentially read.
There are following variables on the "Data-received" tab: Header of M-BUS message StorageNr (index of history, 1-128), Date (history date and time), PowerMax (power maximum [kW]), PowerDate (power maximum date and time), FlowMax (flow maximum [m3/h]), FlowDate (flow maximum date and time), TemperForwardMax (forward temperature maximum [C]), TemperForwardDate (forward temperature maximum date and time).
The message can be called only if the meter includes the card for measuring maxima of flows and powers. This message has to be called 128-times one after the other and the history of maxima of 6-hours (the number of histories and the range of hours can be set on the tab even in a different way) is sequentially read.
There are following variables on the "Data-received" tab: Header of M-BUS message StorageNr (index of history, 1-128), Date (history date and time), PowerMax (power maximum [kW]), PowerDate (power maximum date and time), FlowMax (flow maximum [m3/h]), FlowDate (flow maximum date and time), TemperForwardMax (forward temperature maximum [C]), TemperForwardDate (forward temperature maximum date and time).
See also:
PROMOTIC 9.0.23 SCADA system documentation MICROSYS, spol. s r.o.
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