Delta CS24D - Manual (Page 20)

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Error Limit: This parameter allows you to specify a maximum permissible error for a color to be
considered a match. The default value is 5,000. See Optimizing for more information.
Closest Color mode can be the best mode for some sorting applications, but is rarely useful for the
common color verification applications. Closest Match mode provides more intuitive operation for the
majority of applications. Unique Match mode provides more flexibility in flagging colors that may be
out of the normal range.
7.2 Other Parameters
The next important selection is the Optimization.
The Setup Wizard options are Color Only or Color
plus Intensity. In many applications the Sensor can
be further optimized—see the Optimizing section.
Color Only is the best choice for accommodating
large variations in sensor-to-target distance but it
cannot be used if any of the target colors are shades
of the same color (e.g. light gray and dark gray).
Color plus Intensity handles shades of colors, and
gives equal weighting to the RGB readings and the
Intensity or “darkness” of the color.
The Error Limit parameter is also calculated for you
by the optimize routine, although the default value will
also probably work fine for a quick test.
Averaging should be set high, especially with dark
colors, but keep in mind how the increased response
time affects your application.
Stretch Outputs: This allows you to specify a minimum
output on-time. This is useful in dynamic applications
when interfacing the CS24D to a slow loop-time PLC.
The default setting is 0 milliseconds.
When both Hold Input and Stretch Outputs are used,
outputs will remain ON for the longer of the Hold time or
the Stretch time. When this time expires the outputs will immediately update to the current Sort
Output. If this is
No Match, the No Match will only remain until a Sort
Output is found at which time the stretch output timer
will began to count down. (See section 4.2 for Hold
Input information). In most applications, the Stretch
Outputs parameter can be left at zero.
7.3 Saving Parameter Changes
The last Setup Wizard screen allows you to review the
parameters. Pressing the Finish button will download the
parameters to the CS24D color sensor
. Pressing Cancel
will leave previous settings in place.