Omron FQ2-S/CH Series, User Manual, Page: 201 / 590

Reading 2D-codes FQ2-S/CH User’s Manual
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4
Setting Up Inspect
ions
Unstable Reading Results
Reading Is Unstable Due to Low Contrast
Adjust the brightness to improve the contrast of the 2D code.
Adjusting the Brightness: p. 77
Measurement Data That Can Be Used for External Outputs and Calculations
Expression
text string
Data name Description Data range
JG Judgment This is the judgment result.
− 2: No judgment (not measured),
0: Judgment is OK
1: Judgment is NG
− 16: Measurement timeout error
IN Index
The verification result
(master data No.) is output. − 2: No verification pattern, or reading
error
−
1: Verification is NG
0 to 31: Master data No.
N Num. of characters The number of characters read is output. 0 to 1024
GD0 Overall quality Overall quality of 2D code based on ISO/
IEC15415. The lowest grade of the indi-
vidual indices is the overall quality. 0 to 4
GD1 Decode Evaluates whether decode was success-
ful. 0 to 4
GD2 Cell contrast Evaluates the difference between the
average of the white cell density and the
average of the black cell density. 0 to 4
GD3 Cell modulation Evaluates the deviation of cell brightness. 0 to 4
GD4 Fixed pattern damage Evaluates the degree of fixed pattern
damage of the code.
0 to 4
GD5 Axial nonuniformity Evaluates the degree of vertical and hori-
zontal distortion of the code. 0 to 4
GD6 Grid nonuniformity Evaluates the position deviation of each
cell. 0 to 4
GD7 Unused err. Corr. Evaluates the proportion of unused error
correction during decode. 0 to 4
GD8 Print scale Outputs the print scale. 0 to 4
GD9 Print scale X Outputs the print scale X direction. 0 to 4
GD10 Print scale Y Outputs the print scale Y direction. 0 to 4