Image processing
4.2 Code verification
SIMATIC MV420 / SIMATIC MV440
56 Operating Instructions, 04/2013, A5E02371045-06
Assignment of the numeric grading of AS9132 Rev. A, and the quality levels
Grade 4 3 2 1 0 Comment
Angle of distortion (AOD) <3.5 <7 >7
Module center offset (CO_) C1<2% C2<2% C2>2% C1 is the number of modules
with a center offset less than
10% of the module size
C2 is the number of modules
with a center offset less than
20% of the module size
Module size offset (SO_) C1<2% C2<2% C2>2% C1 is the number of modules
with a size offset between 70%
and 90% of the module size
C2 is the number of modules
with a size offset between 60%
and 105% of the module size
Module fill (MF_) 65%-
105%
<65% or
>105%
Reference only, 80% is ideal
Nominal module size (NMS) Reference only, no grading
Ovality (OV_) C1<2% C2<2% C2>2% C1 and C2 are the numbers of
modules with an ovality greater
than 20% of the nominal
module size
Contrast Reference only, no grading
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