G20 and G21 Brother Post

[wfreeman14932]

I am using a post for the Brother and it (the machine) does not like when the post outputs G20. I tried to change it myself in the post and haven't had any luck. I contacted Fusion and they told me you can not change it. If someone has an idea that would be great! I posted a picture of the code and highlighted what I want to change in yellow.

Thanks,

Wesley 

[RoccoHilton]

прикрепите постпроцессор, который вы хотите изменить

[boopathi.sivakumar]

Hi @wfreeman14932 

You can set the output unit to millimeters so that it output the coordinates in mm

boopathisivakumar_0-1709540191938.png

[wfreeman14932]

I don't want it to post a G20 or G21. If I set it to millimeters it will post a G21.

[seth.madore]

Do you not want MM at all and only Inch?

[wfreeman14932]

My machine is in inch, but for some reason the machine dose not like having a G20 or G21 in the program. Once I post the program I open the program and delete the G20 and the program run perfect. 

[seth.madore]

If you're using the stock Brother post, you'll need to edit line #431:

 writeBlock(gUnitModal.format(unit == MM ? 21 : 20));

Turn it into this:

// writeBlock(gUnitModal.format(unit == MM ? 21 : 20));

Now, really, that only solves half the problem. You really should have some logic that flips out at you if you accidentally post a program in MM (perhaps something from a customer or an accident on your part).

[wfreeman14932]

That is one of the first things I done and it still post it out.

POST

  // absolute coordinates and feed per min

  writeBlock(gMotionModal.format(0), gAbsIncModal.format(90),  gFormat.format(40), gFormat.format(80));

  writeBlock(gFeedModeModal.format(94), gFormat.format(49));

  // writeBlock(gUnitModal.format(unit == MM ? 21 : 20));

  validateCommonParameters();

 Code

(T03 D=4.2 CR=0 TAPER=118DEG - ZMIN=-17.262 - DRILL)

N10 G00 G90 G40 G80

N15 G94 G49

N20 G21 (here is where it post it out)

Maybe I am overlooking something. When I contacted Fusion they said you can't change it, then they said I would have to post it here on the forum to figure it out.

Thanks,

Wesley

[seth.madore · Accepted solution]

---

@wfreeman14932 wrote:

When I contacted Fusion they said you can't change it, then they said I would have to post it here on the forum to figure it out.

Thanks,

Wesley

---

Well that's....something.

I don't have a good way to ask this without sounding like I'm insulting your intelligence, but...are you certain you are editing, saving and using the same post processor? 

I just checked this edit in VSCode, and I get this for posted code:

2024-03-04_18h34_57.png

 

Are you using Machine Configurations, or just Setup and straight to Post Processing?

Can you share a sample file (with machine config and post processor) that is demonstrating this behavior?

[wfreeman14932]

When the guys on the phone for Fusion told me that I couldn't change it, that blew my mind!!!! 

I am not sure which of the things I didn't do properly but I just went back and double checked the my process and made sure that I saved it and now it is working!!!

Maybe it was a good thing that you asked if I was doing the the basics first!!! I really do appreciate your help!!!! 

What is crazy is I made other changes to my post and they were working fine, all except the G20/G21. Then when I would reopen the post I could see the changes ( where I tried putting the // and even tried deleting the line) but my post would still output G20/G21. That is why I called and submitted a support ticket in the first place. 

On the other hand thanks to you My post is working properly!!!!!! 

Thanks,

Wesley 

[a.laasW8M6T]

To be safe like Seth says, you should add a check to see if its posting in metric which will give an error message.

alaasW8M6T_1-1709609400849.png

add the Highlighted code to your post just above where the G20/G21 line is commented out

 if (unit == MM) {
    error(localize("Post does not support Metric"));
  }

You can change the error message to whatever makes the most sense for you

[wfreeman14932]

Awesome , I will try that and that is a great idea. 

Thanks again!