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Destination (63, ICR)
The tag number of the parameter where
the frequency or distance input information
is to be sent.
Filtering (68)
A averaging filter can be applied to the
incoming signal to reduce the effects of
noise. Increasing the value increases the
filtering.
Mode (468)
The frequency input has two modes of operation: frequency or sonic.
In Frequency mode, the input measures the incoming frequency level. In Sonic mode, the
input measures the incoming pulse width to determine a distance in inches. This mode
requires an external Carotron Sonic transducer assembly.
Calibrate Frequency Input
The Calibrate Frequency Input screen provides menu assisted instructions for setting the 0%
Calibration and 100% Calibration parameters.
0% Calibration (64)
This calibration value corresponds to the minimum frequency in Hertz or the minimum
distance in inches that the input signal will provide. This defines 0% input signal. For proper
operation, the
0% Calibration
value must be less than the
100% Calibration
value.
100% Calibration (65)
This calibration value corresponds to the maximum frequency in Hertz or the maximum
distance in inches that the input signal will provide. This defines 100% input signal. For
proper operation, the
100% Calibration
value must be greater than the
0% Calibration
value.
Bias (66) Refer to footnote on p.32
The
Bias
parameter defines the minimum value when 0% signal is input.
Gain (67) Refer to footnote on p.32
The
Gain
parameter defines the level written to the destination parameter when the input is at
100%.
Sign (349)
Since a single ended frequency signal has no polarity, the
Sign
parameter can be used to
make the input signal positive or negative.
Status (164, Read-Only)
The actual frequency level in Hertz or distance in inches can be viewed for diagnostic
purposes.
Out of Range (469)
When the input is in Sonic mode,
Out of Range
will become True anytime the measured
distance falls outside of the 0% and 100% calibration levels. For example, if the 0% and
100% calibrations are set as 12.00 inches and 20.00 inches respectively,
Out of Range
will
be True for any distance less than 12 or greater than 20 inches. The output value written to
the destination parameter is held at its last valid value when
Out of Range
is True.
Figure 22
Summary of Contents for Elite Pro EPN020-000
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