: Enable the debugger in Mastercam to step through the post-processing routine. This helps you identify exactly which part of the post processor code is generating specific lines of G-code. Common Customization Steps
Here are three real-world edits you might need tomorrow:
psof$ # Start of file for non-zero tool pbld, n$, "G00 G17 G40 G80 G90", e$ mastercam post processor editing
Change 0.4 0.3 to 0.3 0.3 for three decimal places.
A post processor is a translator. It takes the generic NCI (Numerical Control Interface) file from Mastercam and converts it into a specific dialect of G-code (Fanuc, Haas, Siemens, Heidenhain, etc.). Out of the box, Mastercam includes hundreds of generic posts, but generic rarely means perfect. : Enable the debugger in Mastercam to step
Adding or removing specific G-codes (like G21 for metric or G91 G28 Z0 for homing) at the start of a program.
While minor edits (like changing a text string) are common for users, complex multi-axis posts (4-axis or 5-axis) often require expert intervention. Many shops work with their to develop custom posts, as errors in complex kinematic logic can lead to expensive machine damage. A post processor is a translator
pwcs$ #Work Coordinate System if work_ofs$ = 0, "G54" if work_ofs$ = 1, "G55" if work_ofs$ = 2, "G56" # ... and so on