Kia Motors achieves 99% DPM barcode read rates on six-speed transmission production line

Kia Motors' traceability program tracks 2D Data Matrix direct part marked (DPM) codes on engine and transmission parts — up to 300,000 unique transmission components and ~200,000 engine components per vehicle. After shifting to a six-speed transmission production line producing ~1,800 units/day, read rates on conventional scanners were only 96–97% for transmissions and under 97% for engines. Codes were small (reduced from 10x10 mm to 5x5 mm), prone to oil contamination from rust-prevention spray, and could be stained or scratched. Unreadable codes caused line stoppages and required manual intervention, reducing efficiency and risking assembly of incorrect parts.

Kia Motors deployed Cognex barcode readers equipped with the 2DMax+ patented algorithm across virtually all transmission and engine component assembly points. Cognex In-Sight 5110 units were installed at most stations, with compact In-Sight Micro 1110 units deployed in narrow spaces. DataMan 8500 handheld readers were added as a backup system, and fixed DataMan 100X readers checked laser marking quality on the line. Readers connect via Ethernet directly to the factory network and PLC, eliminating data transfer equipment.

Kia Motors achieved 99% read rates on the six-speed transmission production line, a meaningful improvement over previous scanners. Production yield increased, manufacturing costs decreased, and the line now matches manufacturing cycle time without manual intervention. The Cognex 2DMax+ algorithm reliably reads codes even when contaminated by oil, dust, or scratches, and handles reduced mark sizes.

• A meaningful improvement in DPM read rates on a 1,800-unit/day line delivers meaningful gains in yield and cost
• Patented 2D code reading algorithms can handle contamination, reduced mark size, and surface damage that defeat conventional scanners
• Direct Ethernet-to-PLC integration eliminates intermediate data transfer hardware in traceability systems