Supported Haas VF2 Subprogram Pattern
Use M97 P100 to call a local subprogram identified by N100. End the local subprogram with M99 so execution returns to the line following the call. The supplied pattern repeats the call after each depth infeed; it does not provide a supported depth-axis command or increment value.
| Element | Function in the supplied pattern |
|---|---|
M97 P100 |
Calls local subprogram N100
|
N100 |
Marks the start of the contour subprogram |
M99 |
Returns control to the calling location |
M30 |
Ends the main program before the local subprogram definition |
Arrange the Repeated Contour Calls
- Program the required depth infeed using values established for the part, tool, and process.
- Call the contour with
M97 P100. - Repeat the depth-infeed and
M97 P100pair for every required depth. - Continue the main program and place
M30before theN100local subprogram definition. - Terminate the contour subprogram with
M99.
The evidence supports explicit repeated calls, not an automatic repeat counter. Define every required depth in the main program because no depth increment, final depth, or repetition count is supplied.
Program Structure and Verification
(DEPTH INFEED)
M97 P100
(DEPTH INFEED)
M97 P100
(DEPTH INFEED)
M97 P100
(MAIN PROGRAM CONTINUES)
M30
N100 (CONTOUR SUBPROGRAM)
G1 X100
G1 Y-100
G1 X0
G1 Y0
M99The contour shown is only the supplied rectangular motion sequence. Before machining, verify that each P100 call reaches N100, each M99 returns to the next main-program block, and execution reaches M30 without falling directly into the subprogram definition. Confirm the programmed depth separately because the evidence does not specify its axis, sign, reference mode, or value.
FAQ
How do I repeat a contour on a Haas VF2 at several depths?
Program one depth infeed followed by M97 P100, then repeat that pair for each required depth. Store the contour under N100 and end it with M99.
What does M97 P100 call in this Haas VF2 program?
M97 P100 calls the local subprogram beginning at N100 in the supplied pattern. M99 returns execution to the block after the call.
Where should the N100 contour subprogram be placed?
Place M30 at the end of the main program, then define the contour at N100. This arrangement prevents normal main-program execution from continuing directly into the local subprogram.
