Image processing
4.2 Code verification
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
51
● Print growth:
Positive or negative size ratio of the printed cells relative to the ideal grid.
● Unused error correction:
Proportion of error correction information not used for correction of the read result.
● Angle of distortion:
Difference between the two solid edges of the data matrix and the vertical edges
measured in degrees.
Assignment of the numeric grade of Siemens DPM to the quality levels
Grade (abbreviation) 4 3 2 1 0 Comment
Cell size (CS_) ≥10 ≥9 ≥7 ≥5 <5 In pixels
Center offset (CO_) ≤2.5 ≤5.0 ≤7.5 ≤10.0 >10.0 Without unit
Size offset (SO_) ≤2.5 ≤5.0 ≤7.5 ≤10.0 >10.0 Without unit
Cell modulation (MOD) ≥90% ≥80% ≥70% ≥60% <60%
Border match (BM_) ≥95% ≥90% ≥85% ≥80% <80%
Symbol contrast (SC_) ≥70% ≥55% ≥40% ≥20% <20%
Axial non-uniformity (AN_) ≤6% ≤8% ≤10% ≤12% >12%
Print growth (PG_) ≤10% ≤20% ≤30% ≤40% >40%
Unused error correction (UEC) ≥62% ≥50% ≥37% ≥25% <25% Codewords in ECC 200
Angle of distortion (AOD) ≤2% ≤4% ≤6& ≤7% >7%
To Next Page
Loading...
