What is different Excellon and RS-274X format

Request , PCB Designer
Dear Sir.

When I try to export Drill data with 2 method: Excellon format and RS-274 format , I receive 2 result different.





Please help me understand this problem.

Thanks

Thank you for your inquiry.

In regard to your question, the reason why the output is different between Excellon and RS-274X formats is that Excellon does not support outputting long holes.
*In the case of Excellon, long holes are often expressed using multiple holes just like your image.
■Exporting NC Drills

Thank you.
PAGETOP