IDEC DATAVS2 Series - Manual (Page 64)

SVS2 Series Instruction Manual
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Please note that different parameters are available in the STANDARD and EXPERT modes:
STANDARD mode EXPERT mode
• Name : Name assigned to control in Inspection Explorer. Maximum length is 256 characters;
• Status : see "Result" further below;
• Position Limits :
o
Min, Max: Minimum and maximum value of detectable position. These thresholds must be
compatible with the value found (shown in the "Calculated" bar). This means Min must be
less than or equal to "Calculated", and Max must be greater than or equal to "Calculated".
• Sensitivity: This is the degree of accuracy provided when searching for the edge. Set sensitivity affects
processing results: the lower the sensitivity, the greater the accuracy.
• Variation Type : Determines how the edge point is to be identified during image scanning. Possible
values are:
o
White to Black: point is treated as an edge point when the first white-to-black transition is
detected;
o
Black to White: point is treated as an edge point when the first black-to-white transition is
detected;
o
Both: point is labelled as edge point at both white-to-black and black-to-white transitions;
o
Auto: automatic edge point recognition.
• Noise rejection : Reduces noise in the edge identification process. The threshold is a function of the
first derivative and establishes the minimum brightness variation for a point to be considered as an
edge point;
• Direction: Determines the search direction and versus. Possible values are:
o
Left to right;
o
Right to left;
o
Up to down;
o
Down to up.
• Delete : Deletes control from inspection.
Result
Graphically displayed by the Status indicator; shows control result:
o
: system detected an edge in the acquired image and number is within the range set
in "Match limits" ;
o
: system found no edge or number is outside the specified limits.
Example