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Omron ZFV Series User Manual Page 53

Smart sensors with ultra-high-speed ccd cameras.
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Section 3
Executing Teaching
Item
PATTERN
MATCH
BRIGHT
AREA*
ZFV
50
User's Manual
Description
Select this item for detecting shapes and recognizing differ-
ent objects.
Judgment is performed by comparing the degree of match
between a registered model and the target workpiece. Com-
pared with [SEARCH], more detailed detection is possible,
and larger workpieces can be detected. Note, however, that
this item does not support tilted workpieces.
Non-defective item
Model
NG
Measurement is unstable when there are two or
more of the same pattern. Register unique pat-
terns in the screen or restrict the search range.
Changing the search area
Select this item to detect brightness (density) or scratches/
dirt on plain workpieces. Set the teaching area to the desired
part of the workpiece to detect brightness in, and execute
teaching.
Non-defective item
Teaching area
Enclose a restricted area of the
workpiece.
NG
NG
Select this item to recognize objects by size (area).Set the
teaching area to the desired part of the workpiece to detect
the size (area) in, and execute teaching.
Teaching area
Measurement of area at this part
NG
p.75
Example of Application
Recognition of differ-
ent kind of instruction
sheet
Detection of
scratches/dirt in
sheets
Checking of lighting of
indicators
Detection of presence
of screw threads
Inspection of short-
ages in confectionary
Detection of presence
of silver paste

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