Omron V460-H User Manual page 57

3 Basic Operation
Tips and Tricks – DPM, Shiny Cylindrical / Curved Parts
• If the mark is difficult to read, change the reader position while holding the trigger.
• If needed, check the readability table to confirm that the code density can be read at the current
working distance.
• Check that the reader can "see" the entire code, i.e., code size < FOV (field of view).
• Check that the correct code type is currently enabled.
Important: Aztec Code and DotCode aren't enabled by default.
• If needed, enable Advanced Features: Curved 2D, 2D Damaged Mode, Attempt Morphology
Manipulation, etc. (disabled by default).
• Check that the symbology features are enabled properly.
Important: DMRE (Data Matrix Rectangular Extension) is not enabled by default.
• For Data Matrix codes, only ECC 200 is enabled by default. If necessary, legacy ECC 000 - ECC 130
can be enabled.
• For parts in color, select the proper lighting color to create contrast when using Dome Lighting
(RGB available).
• Using the opposite light spectrum will make the target appear darker.
• Using the same light spectrum will make the target appear lighter.
• The target can be the code's foreground or background color.
Guidelines for Direct Part Marking on Curved Surfaces
It is important to be familiar with the standards and guidelines for marking on curved surfaces.
The AIAG B-17 Standard (2D Direct Parts Marking Guideline) states the following:
"For marking and reading, flat surfaces are preferred over curved surfaces because the curvature of an
item may prohibit proper marking and proper illumination for reading and can distort the code. If the
mark is made on a round/curved surface, the symbol height should be less than 16% of the part's
diameter. For Data Matrix codes, a rectangular symbol may be considered to provide greater readability
on smaller circumference parts. QR Code is not available in a rectangular form."
From the 2D Direct Parts Marking Guideline (B-17 ) 7th Edition, 2009. Reprinted with permission of AIAG (Automotive Industry
Action Group). AIAG makes no representation or warranty as to the accuracy or usefulness of its materials when presented in
contexts, with other materials, or for uses, other than as originally published by AIAG. For additional information, or to purchase
the referenced AIAG publication, contact AIAG at 248.358.3003 or www.aiag.org.
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V460-H Industrial Handheld DPM Reader User Manual