Omron FQ2-S Series User Manual page 112

Step 2 Teaching
For teaching, you specify the measurement region and the format of the characters to read (number of
characters, alphanumeric characters or symbols, etc.). Detailed parameters to recognize the characters will be
set automatically. Also, you can register the characters that are actually read when teaching as a verification
condition in the master data.
Step 4 Setting the Verification Conditions: p. 113
1
Press [TEACH].
2
Place the characters to read in front of the camera.
3
Move the rectangle around the character string to
read, and then press [OK].
The measurement region will be set.
4
The characters that were read with the initial param-
eters will be displayed above each line.
You set the format of the characters to recognize to pre-
vent reading similar characters incorrectly. (This display
will not appear if the character format is already regis-
tered.)
• Number of characters to read in the character string
• Types of characters (letters, numbers, symbols, fixed
characters,
Enter the types of characters in order and the number of
characters according to the actual character string that
was read.
Example
2012.12.20
FQ-OCR
*1 If the reading mode is [Fixed] and the number of characters that are actually read is less than the number specified in the character format,
this will be treated as a reading failure. If you want reading to be treated as successful even when the number of characters that are actu-
ally read is less than the number specified in the character format, set the reading mode to [Variable].
*2 If alphanumeric characters are directly specified as fixed characters but the characters that were read do not match the specified charac-
ters, it is assumed that reading the characters failed.
The following table gives detailed specifications for the character format.
Item
Characters that can be
entered in the charac-
ter format string
110
Reading and Verifying Character Strings
*2
etc.)
→ Line 1
Line 2 ??-???
Description
• Numbers
0 to 9
• Letters
A to Z
• Symbols
' (apostrophe), - (hyphen), . (period), : (colon), / (slash), wildcard
Wildcards
You can use wildcards to specify characters. For example, you can use wildcards to prevent incorrect recogni-
tion of 0 (zero) and O (the letter O).
?: Any character (recognized characters: any characters except for symbols)
#: Any number from 0 to 9 (recognized characters: 0 to 9)
$: Any letter from A to Z (recognized characters: A to Z)
@: Any symbol (recognized characters: ' - . : / )
*: Skip (No judgement is made for the judgement conditions (similarity or stability). The detected character
count is also not incremented.)
*1
####.##.##
FQ2-S/CH User's Manual