FB_MBUS_EMU_32x7_Option8
The function block FB_MBUS_EMU_32x7_Option8 is used to read electricity meters from EMU:
-EMU32.x7
The parameter set must be set in the device to 70000 hexadecimal (variant 8) in order to read out this data. Please refer to the meter documentation for further information regarding this.
 | In the normal version, the current consumption of the M-Bus interface is equivalent to 3 standard loads. If an M-BUS master interface is used that is designed, for example, for up to 120 standard loads, a maximum of 40 EMU M-BUS meters can be connected. The meter can optionally be supplied with 230 V. The current consumption of the M-Bus interface is then equivalent to one standard load. |
The transmission of data from the EMU meter to the M-Bus protocol computer only works if the EMU meter is connected to at least two phases of the mains voltage network.
The EMU meter transmits current data to the device’s M-Bus interface every 40 seconds, so that the readout data is approx. 40 - 45 seconds old.
The function block can only be executed together with the function block FB_MBUSKL6781().
| Further information |
Inputs
VAR_INPUT
usiAddress : USINT;
stSecAdr : ST_MBUS_SecAdr;
eBaudrate : E_MBUS_Baudrate := eMBUS_Baud2400;
bStart : BOOL;
bSND_NKE : BOOL := TRUE;
bReadInit : BOOL := TRUE;
tMinSendTime : TIME := t#2s;
usiUnit : USINT;
bDisabled : BOOL := FALSE;
END_VAR
Name | Type | Description |
|---|---|---|
usiAddress | USINT | Primary address of the meter to be read with this function block. |
stSecAdr | Secondary address of the meter to be read with this function block. | |
eBaudrate | 300, 600, 1200, 2400, 4800, 9600 baud | |
bStart | BOOL | All meters are read once on the positive edge of this input. |
bSND_NKE | BOOL | TRUE initializes the meter for each read operation and sets the meter to the first telegram (SND_NKE). |
bReadInit | BOOL | If the PLC is restarted, the meter is read once. |
tMinSendTime | TIME | Default t#2s. The meter is read again, once the time set here has elapsed. If t#0s the meter is not read and can be read manually with bStart. |
usiUnit | USINT | Unit of the energy values to be output by the function block. 0=W(h) / 1=KW(h) / 2 =MW(h) / 3=GW(h). |
bDisabled | BOOL | TRUE = deselection of the function block |
Inputs/outputs
VAR_IN_OUT
stCom : ST_MBUS_Communication;
END_VAR
Name | Type | Description |
|---|---|---|
stCom | This structure is used to link the function block FB_MBUSKL6781() with the meter blocks. |
Outputs
VAR_OUTPUT
bBusy : BOOL;
bReady : BOOL;
bError : BOOL;
eError : E_MBUS_ERROR;
dwIdNumber : DWORD;
byStatus : BYTE;
byGEN : BYTE;
byCounter : BYTE;
usiRecivedAdr : USINT;
eMedium : E_MBUS_Medium;
sMan : STRING(3);
stOperatingHours : ST_MBus_Info;
stActiveEnergyT1 : ST_MBus_Info;
stActiveEnergyT2 : ST_MBus_Info;
stReactiveEnergyT1 : ST_MBus_Info;
stReactiveEnergyT2 : ST_MBus_Info;
stTariff : ST_MBus_Info;
stActivePowerL1 : ST_MBus_Info;
stActivePowerL2 : ST_MBus_Info;
stActivePowerL3 : ST_MBus_Info;
stReactivePowerL1 : ST_MBus_Info;
stReactivePowerL2 : ST_MBus_Info;
stReactivePowerL3 : ST_MBus_Info;
stActivePowerMaxT1 : ST_MBus_Info;
stActivePowerMaxT2 : ST_MBus_Info;
stVoltageL1 : ST_MBus_Info;
stVoltageL2 : ST_MBus_Info;
stVoltageL3 : ST_MBus_Info;
stCurrentL1 : ST_MBus_Info;
stCurrentL2 : ST_MBus_Info;
stCurrentL3 : ST_MBus_Info;
stFrequency : ST_MBus_Info;
stPowerFactorL1 : ST_MBus_Info;
stPowerFactorL2 : ST_MBus_Info;
stPowerFactorL3 : ST_MBus_Info;
stInitCounter : ST_MBus_Info;
stDeviceError : ST_MBus_Info;
END_VAR
Name | Type | Description |
|---|---|---|
bBusy | BOOL | The bBusy output is TRUE as long as the meter is being read. |
bReady | BOOL | The bReady output is TRUE for one cycle, once meter reading is completed. |
bError | BOOL | This output goes TRUE as soon as an error occurs. This error is described via the eError variable. |
eError | This output outputs an error code in the event of an error. bError goes TRUE at the same time. | |
dwIdNumber | DWORD | Serial number of the meter (secondary address) |
byStatus | BYTE | Device status |
byGEN | BYTE | Software version of the device |
byCounter | BYTE | Number of times the master has accessed data of the respective slave |
usiRecivedAdr | USINT | Received primary address (0-250) |
eMedium | Medium | |
sMan | STRING | Manufacturer sign |
stOperatingHours | Operating hours of the EMU meter | |
stActiveEnergyT1 | Meter reading, active energy tariff 1 | |
stActiveEnergyT2 | Meter reading, active energy tariff 2 | |
stReactiveEnergyT1 | Meter reading, reactive energy tariff 1 | |
stReactiveEnergyT2 | Meter reading, reactive energy tariff 2 | |
stTariff | Current tariff | |
stActivePowerL1 | Current consumption, active power L1 | |
stActivePowerL2 | Current consumption, active power L2 | |
stActivePowerL3 | Current consumption, active power L3 | |
stReactivePowerL1 | Current consumption, reactive power L1 | |
stReactivePowerL2 | Current consumption, reactive power L2 | |
stReactivePowerL3 | Current consumption, reactive power L3 | |
stActivePowerMaxT1 | Maximum active power tariff 1 | |
stActivePowerMaxT2 | Maximum active power tariff 2 | |
stVoltageL1 | Current voltage L1 | |
stVoltageL2 | Current voltage L2 | |
stVoltageL3 | Current voltage L3 | |
stCurrentL1 | Instantaneous current L1 | |
stCurrentL2 | Instantaneous current L2 | |
stCurrentL3 | Instantaneous current L3 | |
stFrequency | Current mains frequency | |
stPowerFactorL1 | Current form factor phase L1 (cos Phi) | |
stPowerFactorL2 | Current form factor phase L2 (cos Phi) | |
stPowerFactorL3 | Current form factor phase L3 (cos Phi) | |
stInitCounter | Number of power failures at the EMU meter | |
stDeviceError | Error message from the device |
Requirements
Development Environment | PLC library to include |
|---|---|
TwinCAT from v3.1.4020.14 | Tc2_MBus from 3.3.5.0 |