Chapter 6
Interfacing to the Card
6-5
Sif142MapSensors (long SensLoop(0 to 23))
An array that associates each sensor (0 to 23) with an output (0 to 13) for PID control.
An output value of -1 for a sensor causes the sensor to continue to monitor deposition,
but have no effect on output control.
SensLoop ()
Array (0 to 23) of sensor to output assignments (0 to 13).
Sif142MapAnSensors (long AnLoop(0 to 3))
An array that associates each analog input (0 to 3) with an output (0 to 13) for PID
control. An output value of -1 for an input causes the input to continue to monitor
voltage, but have no effect on output control.
AnLoop ()
Array (0 to 3) of analog input to output assignments (0 to 13).
Sif142GetReadings (double SensorArray(0 to 23, 0 to 2), double OutputArray (0 to
13))
Fills two arrays with measurement data. In the second dimension of the SensorArray
the elements are Rate (A/S), Thickness (A), and Frequency (Hz). Negative frequency
values indicate a sensor error. The OutputArray element is output power, 0 to 1.
If a 0 is returned from this function, there are no new readings available. A non zero
value means that there is new data, with the returned value indicating the number of
readings in the buffer. The buffer is 10 readings long. To flush it, keep reading until
there is no new data.
Sif142GetAnReadings (double AnalogArray(0 to 3), double OutputArray (0 to 13))
Fills two arrays with measurement data. The AnalogArray is voltage. The OutputArray
is filtered power.
If a 0 is returned from this function, there are no new readings available. A non zero
value means that there is new data, with the returned value indicating the number of
readings in the buffer. The buffer is 10 readings long. To flush it, keep reading until
there is no new data.
Sif142GetPower (double PowerArray(0 to 13))
Fills the array with the current output powers. Unlike the Sif142GetReadings
OutputArray, the value is an instantaneous unbuffered value.
