Maxim Integrated 78M6612 M-API Library - Manual (Page 20)

78M6612 M-API Library User Guide UG_6612_036
20 Rev. 1.00
4.2.1.1 Auto-Scaling
When retrieving measurement data using the MAPI_GetSetRegister() call, the returned data value is
automatically converted to usable data according to the TypeSize of the register location. The
ScaleFactor is for information only.
When writing alarm thresholds to library input registers, usable data values are automatically converted to
raw values according to the TypeSize of the target register address.
4.2.1.2 Output Data Address Locations
The following output data is updated once per accumulation interval and available via the
MAPI_GetSetRegister() call.
MPU
Address Name LSB Type Description
NB WB
00 20 Delta Temperature 0.1 °C FLOAT Temperature difference from 22 °C.
01 21 Line Frequency 0.01 Hz FREQ Line Frequency.
02 22
Alarm Status
(common)
STATUS
See Section 4.4.3 – MAPI_MeterStatus() for
details.
03 23
OverCurrent Event
Count 1
INTEGER
Number of event counts where value
exceeded over current alarm threshold.
04 24
Under Voltage Event
Count
1 INTEGER
Number of event counts where value
exceeded under voltage alarm threshold.
05 25
Over Voltage Event
Count
1 INTEGER
Number of event counts where value
exceeded over voltage alarm threshold.
06 26 Volts mVrms VRMS_M AC Line Voltage (RMS)
MPU Address
Name LSB Type Description Outlet 1 Outlet 2
NB WB NB WB
07 27 47 67
Active
Power
mW POWER Active Power (per accum interval).
08 28 48 68 Energy mWh ENERGY
Accumulated Energy.
09 29 49 69 Cost mUnits FLOAT Accumulated Cost.
0A 2A 4A 6A Current mArms IRMS_M RMS Current.
0B 2B 4B 6B
Reactive
Power
mW POWER Reactive Power (per accum interval).
0C 2C 4C 6C
Apparent
Power
mW POWER Apparent Power (per accum interval).
0D 2D 4D 6D
Power
Factor
– FLOAT
Power factor.
(output will be between -1.00 and 1.00)