Detecting Presence Of Character String (Chara) - Omron ZFV-C User Manual

Detecting Presence of Character String (CHARA)

Select this item to check for presence of character strings.
There are two measurement items for [CHARA]: [CHARA1] and [CHARA2].
● CHARA1
Select this item to check for presence of the entire character string printed on plain
background. Judgment is performed by monitoring changes in density (brightness) of
the registered character string. Errors in characters, missing dots, etc. cannot be
detected. This item is suitable for applications such as detection of presence of prints
on chips and presence of entire characters of the best-before date.
Example: Detection of presence of prints on chip
OK
CHARA1 OK
505
NG due to absence
CHARA1 NG
of characters
● CHARA2
Select this item to detect omission of single characters.
Errors in single characters, missing dots, etc. cannot be detected. This item is suitable
for applications such as detection of missing character in character strings such as the
best-before date.
Example:
OK
CHARA2
OK
505
NG due to absence
CHARA2 NG
of a character
50

Detecting Presence of Character String (CHARA)

Section 4
ZFV-C
85
User's Manual