Custom OSAI Post Processor

[jta49]

I have a Hendrick Manufacturing HLD-L68 CNC router. I process all of my Gcode files using the OSAI post processor supplied by fusion, however my machine cannot read the G90, G91, and ho(x) codes. I am looking for a post processor that will not output these codes so I do not have to manually take them out myself. Any help is appreciated. 

I have included two files to show what I take out each time, one is correct and one is the file with the invalid g90,g91 etc codes. 

Thankyou, 

James

[Arun.rs]

HI @jta49 

 Thanks for raising your concern via Forum.

Open 'osai.cps' file in a 'Visual Studio Code' or 'Notepad++' to do the required modifications.

1. Go to line number 243, and remove ' gAbsIncModal.format(90) ' so final code will like below 

 writeBlock(gFeedModeModal.format(94));

2. Go to line number 1170, change the below code 

From this:

if (_useG28) {
      gAbsIncModal.reset();
      writeBlock(gMotionModal.format(0), gFormat.format(79), gAbsIncModal.format(91), words);
      writeBlock(gAbsIncModal.format(90));

To this:

if (_useG28) {
      gAbsIncModal.reset();
      writeBlock(gMotionModal.format(0), gFormat.format(79), words);

3.  To remove H offset , go to line number 544 and 551 and remove ' hFormat.format(lengthOffset)'

4. To give Y home position 100 in program end, go to line number 1140. Give 100 instead of 0 for '_yHome '

 _yHome = toPreciseUnit(100, MM);

Save the file and test the NC output carefully.

Regards

[jta49]

Hey there, Thanks for the response and I really appreciate the help @Arun.rs . I have made the proper edits however when I try to import into fusion I am getting an "invalid post processor" error message. Any Idea what is going on?

[Arun.rs]

Hi @jta49 

Thanks for your feedback.

The error is because of a extra comma in line number 551 .

Remove the same and save the file.

Hope this helps!

Regards

[jta49]

I have edited it but now I am getting another random G90 code (see line 17 and line 106) along with a weird ending y value of 3.937 ? Any thoughts on how to fix that @Arun.rs ?

[jta49]

Ah I realized for the Y-value at the end I am exporting in Inches and I assume it is converting to MM? That is why it is outputting the 3.9? @Arun.rs 

[Arun.rs · Accepted solution]

Hi @jta49 

Apologies for reply.

If your machine is not accepting G90 codes then you have to remove ' gAbsIncModal.format(90) ' from the post.

Use 'Ctrl+H' for replace .

Yes, the 3.9 is converting to inches .

Regards

[jta49]

Worked Perfectly! Thanks so much @Arun.rs 

[jchaissonPWX3J]

@Arun.rs , 

would you be willing to help me i have a very similar situation and I'm stuck. We are trying to switch from MasterCAM to InventorCAM. We have a C.R. ONSRUD 5-Axis Router thats uses an OSAI Controller and when i try and get C.R. ONSRUD to help im told they only can help and support MasterCAM Post Processors. When i compare NC files of  the same part i get similar G-Code formating but not exactly the same. please message me if you can help.