Determine your cell size. Based on your laser spot size and the available marking area. Minimum 3× spot size.
Set up the code in your marking software. Enter the data string, select DataMatrix ECC200, set cell size, and include the quiet zone.
Choose the marking method. Annealing for stainless steel (best contrast). Etching for aluminum. Foaming for dark plastic. Color removal for anodized surfaces.
Set initial laser parameters. Start with moderate power (50–60%), fast speed (400–600 mm/s), and hatch spacing smaller than your cell size.
Mark a test code on scrap material. Same material, same surface finish as production parts.
Verify the test code. Use a verification system to grade it. If it passes, you’re done. If not, adjust based on which parameter failed:
| Failed Parameter |
Adjustment |
| Contrast |
Increase power or change marking method |
| Modulation |
Check focus, ensure even marking |
| Print Growth |
Reduce power or increase speed |
| Grid Non-Uniformity |
Recalibrate galvo |
| Fixed Pattern Damage |
Reduce power, protect finder pattern |
| Decode |
Check all of the above |
Lock in your parameters. Once you achieve a passing grade, save the settings as a named parameter file. Don’t change them without re-verifying.
Verify periodically during production. Check the first part of each batch and spot-check throughout the run. Mark quality can drift as optics get dirty or ambient conditions change.
Looking for a laser marker with built-in code verification? [See our solutions for traceability marking →]
