Description
Extract a single data item from a Pwr object.
The data item is taken from the ith data point and the jth data column. If no data have been taken, the returned value is NIL. A new class DATACOL object is automatically created by the call to Pwr.DataCol(). It is usually transient, existing only for one function call.
Type
INSTANCE FUNCTION
Usage
DataValue = Pwr.DataValue(PointNum, ColNumber)
PointNum
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INDEX
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Point number, zero-based. If PointNum is out of range, a value from the last or acquired point is returned.
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NIL
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Always return a value from the last acquired point.
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ColNumber
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INDEX
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A code identifying the column to be used. Use the following predefined constants:
•PWR_T = Time
•PWR_Vf = Applied Voltage
•PWR_Vu = Uncompensated Voltage
•PWR_Im = Measured Current
•PWR_Pwr = Measured Power
•PWR_R = Measured Resistance
•PWR_Temp = Measured Temperature
•PWR_IERange = IE Range used during measurement
•PWR_Ach = Measured Voltage Aux Channel
•PWR_Sig = Signal sent to Control Amp
•PWR_Over = Overload column |
Result
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REAL
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The returned value.
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NIL
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No data acquired yet.
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