Table of Contents
Advertisement
● Defects:
Irregularities in elements and quiet zones measured based on the non-uniformity of the
reflectance of the elements.
● Modulation:
Ratio of the minimum edge contrast to the symbol contrast.
● Start quiet zone:
Area outside the start codeword with a length of 10 modules.
● Stop quiet zone:
Area outside the stop codeword with a length of 10 modules.
Assignment of the numeric grade of ISO/IEC 15416 to the quality levels
Grade
Scan reflectance profile
Edge determination
Reference decode
Minimum edge contrast
(MEC)
Minimum reflectance (RMI)
Symbol contrast (SC_)
Decodability (DEC)
Defects (DEF)
Modulation (MOD)
Quiet zone (QZ_)
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
4
3
Lowest single grade per scan line
pass
pass
≥0.15
≤0.5R
max
≥0.70
≥0.55
≥0.62
≥0.50
≤0.15
≤0.20
≥0.70
≥0.60
≥10
modules
2
1
≥0.40
≥0.20
≥0.38
≥0.25
≤0.25
≤0.30
≥0.50
≥0.40
Image processing
4.2 Code verification
0
Comment
fail
fail
<0.15
>0.5R
R
is the maximum
max
max
reflectance.
<0.20
<0.25
>0.30
<0.40
< 10
modules
61
Advertisement
Table of Contents
