Echelon Lumewave CPD 3000 Lighting Controller - Manual (Page 12)

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transactions to capture level control feedback, environmental variables, and
alarm conditions. This network variable reflects all of this information in one
single-structured data type defined by UFPTcontrolData
.
Figure 4.
UNVTcontrolData(nvoControlData) Fields
The fields for UNVTcontrolData are described in table 2.
Table 2 nvoControlData Fields (UNVTcontrolData)
Field Type Notes
power SNVT_power
Reflects the instantaneous power consumed by the
LC and controlled fixture. (0.1w resolution) This
value is updated each second by the power
measurement chip on the LC.
energy SNVT_elec_kwh_l Reports the accumulated energy usage to 0.1kwh
resolution. The LC writes this to EEPROM memory
every 12 hours, and at the transition to OFF.
Installations which kill power to the streetlight
segment at dawn should delay the switch of the
power for several minutes after the lights are
scheduled OFF to allow the controller to store this
value in EEPROM memory.
runtime UNVTruntime
The number of operating minutes for the fixture.
Stored to EEPROM with each OFF transition. The
presentation format for this field is an integer value
of hours.