Properties

NOTE: It is recommended to leave the Conversion at “Default” in the NrioCounterInputProxyExt, so as not to interfere with rate calculation. If a scaled Count output is needed, add a LinearCalibrationExt to the point, and enter the item quantity/pulse as the Scale value there. See “Linear Calibration Ext”, including the ending Note: about this application.

In addition to common Nrio Proxy Ext properties, the following additional properties are available in the NrioCounterInputProxyExt:

Output Select
Specifies whether count total (Count) or count rate (Rate) is at the Out slot, as a status numeric. Default is Count.
Total
(read only) Total number of pulses counted since the Proxy Ext was last set or reset. Data type is Baja Long.
Rate
(read only) Calculated rate, based upon Rate Calc configuration. Data type is Baja Double.
Rate Calc Type
Selectable to one of three types provided in the Nrio module:
- FixedWindowRateType (default)
- SlidingWindowRateType
- TriggerRateType
  
  NOTE: Future rate calculators may be developed by third-parties. When this occurs, they will be available (if that module is installed), as pull-down menu options other than Nrio.
Rate Calc
Contains from one to three properties used in rate calculation, according to the selected rate calc type (see “About Nrio rate calculation”):
- Scale
  Default is value is 1. Appropriate value depends on the item quantity/pulse and desired rate units. Two examples are provided:
  
  Power Meter
  
  Each meter pulse indicates 0.15 kWh, and desired rate units is kW.
  
  Scale = 3600 (sec/hr) * 0.15 kWh/pulse = 54
  
  Liquid Flow Meter
  
  Each meter pulse indicates 0.375 liters, and desired rate units is liters/minute (L/min).
  
  Scale = 60 (sec/min) * 0.375 liters/pulse = 22.5
- Interval
  (not available if TriggerRateType) Default is value is 1 minute.
- Windows
  (available only if SlidingWindowRateType) Default is value is 6.
Rate Calc Time
(read only) Reflects timestamp of last rate calculation.

Properties

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