[tolwyk]

Hello All!

I am working on getting a 4th axis setup on our Probotix CNC. I have been having troubles with getting our post processor to work but it is at a point now where it seems to do everything it needs to be except I don't know how to make it run G93. Now I don't know anything really about writing post processors, coding syntax, or anything like that so I may be missing something obvious, but any help would be greatly appreciated!

Here is the post-processor I have been working on:

//MadCAM_POST_2003-12-10
*VERSION*
1.0_031210
*FILE_NAME*
Iso_G-code
*FILE_EXTENSION*
ngc
*FILE_DEST*
c:\postfiles\
*FILTER*
0.001
*OUTPUT_WIDTH*
4
*OUTPUT_DECIMALS*
5
*SCALE_X*
1
*SCALE_Y*
1
*SCALE_Z*
1
*SCALE_4*
1
*AXIS_1_CHAR*
X
*AXIS_2_CHAR*
Y
*AXIS_3_CHAR*
Z
*AXIS_4_CHAR*
A
*CUTTER_REFERENCE*
TIP
*TOOLPATH_OUTPUT*
TRANSFORM
*ANGLE_OUTPUT*
CONTINUOUS
*INVERSE_TIME_FEED_MAX*
1000000
*INVERSE_TIME_FEED_ON*
G93
*INVERSE_TIME_FEED_OFF*
G94
*RAPID_FEED*
10000

Or if there are any other workarounds let me know, thanks again!

[JOM]

Just use the variables for inverse time feed on and off for the first cut and last cut sections. See example below.

//MadCAM_POST_PROCESSOR
*VERSION*
6.0_200202
*FILE_NAME*
Mach3_4-axis
*FILE_EXTENSION*
txt
*FILE_DEST*
c:\postfiles\
*FILTER*
0.005
*OUTPUT_WIDTH*
4
*OUTPUT_DECIMALS*
3
*SCALE_1*
1
*SCALE_2*
1
*SCALE_3*
1
*SCALE_4*
1
*SCALE_5*
1
*AXIS_1_CHAR*
X
*AXIS_2_CHAR*
Y
*AXIS_3_CHAR*
Z
*AXIS_4_CHAR*
A
*AXIS_5_CHAR*
B
*CUTTER_REFERENCE*
TIP
*TOOLPATH_OUTPUT*
TRANSFORM
*INVERSE_TIME_FEED_MAX*
1000000
*INVERSE_TIME_FEED_ON*
G93
*INVERSE_TIME_FEED_OFF*
G94

*RAPID*
G00"x""y""z""a"
*END_SECTION*

*RAPID_APPROACH*
"x""y""z""a"
*END_SECTION*

*RAPID_RETRACT*
G00"x""y""z""a"
*END_SECTION*

*APPROACH*
G01"x""y""z""a" F"feedz"
*END_SECTION*

*FIRST_CUT*
G01 "inverse_time_feed_on" "x""y""z""a" F"feed"
*END_SECTION*

*LAST_CUT*
G01"x""y""z""a" F"feed"
"inverse_time_feed_off"
*END_SECTION*

*CUT*
"x""y""z""a" F"feed"
*END_SECTION*

*TOOL_CHANGE*
("toolname")
M6 T"toolnr"
M03 S"speed"
*END_SECTION*

*TOOL_STOP*
M5 M9
*END_SECTION*

*TOOLPATH_CHANGE*
(Toolpath change to "method")
G00 "zhome"
(Tool "toolnr" Continue's)
*END_SECTION*

*PROGRAM_START*
G00 G49 G17 G80 G50 G90 G64 G94
*END_SECTION*

*PROGRAM_END*
M30
*END_SECTION*

*LINE_START_NUMBER*
1

/Joakim