Help with G28 output.

[calihawker]

Hi,

 

I am trying to stop the G28 reference return at the end of each tool change. I want it only at the end of prog.

 

Thanks in advance!

 

Steve

[Chris McIntosh]

This really depends on the post that you are using. Some posts will have a misc value that you can set that will turn off the ref return for each individual operation.

 

For a more permanent solution in the post, you can search for the pretract post block. Generally the line outputting these reference returns are found here and are output using an sg28ref variable like this:

 

pbld, n$, sgabsinc, sgcode, *sg28ref, "Z0.", scoolant, e$

 

To disable the retract except for at the end of file you would add a condition to output only when nextop$ = 1003, like this:

if nextop$ = 1003, pbld, n$, sgabsinc, sgcode, *sg28ref, "Z0.", scoolant, e$

 

You should also add an else statement to handle the output of coolant to be thorough:

if nextop$ = 1003, pbld, n$, sgabsinc, sgcode, *sg28ref, "Z0.", scoolant, e$

else, pbld, n$, scoolant, e$

[calihawker]

Thanks!

I'm using an old mpfan post. I'll give it a shot.

 

Steve

[Chris McIntosh]

Mpfan should use the format I've described above, let us know if you have any other questions.

[calihawker]

At posting I get an "illegal charachter $ at line 541" message. Tried it several different ways but no go.

 

Do I have to make this change at every occurance? I count 3 times.

 

Thank you again!!

 

Steve

[jeff]

At posting I get an "illegal charachter $ at line 541" message. Tried it several different ways but no go.

 

Can you copy/paste that part of your post here?

[jeepyjking24]

Here ya go done for you

the only issue i have is it keeps it from adding M08 at any other tool change but the first havent fig that out yet. If i could find a way to keep M08 on all tool changes even if a M09 was never called you would be set.

 

 

 

 

Go to

 

pretract

 

 

 

find  the cc_pos is reset in the tool change copy and paste everything under it

  #cc_pos is reset in the toolchange here
    

  cc_pos$ = zero
      gcode$ = zero
      if use_rot_lock & rot_on_x,
        [
        if (index = one & (prv_indx_out <> fmtrnd(indx_out)) | (prv_cabs <> fmtrnd(cabs)))
          | nextop$ = 1003 | frc_cinit, prot_unlock
        ]
     if nextop$ = 1003,  pbld, n$, sccomp,*sm05, psub_end_mny, e$
      if convert_rpd$, pconvert_rpd
      if nextop$ = 1003, pbld, n$, scoolant, e$
      if nextop$ = 1003, pbld, n$, [if gcode$, sgfeed], sgabsinc, sgcode, *sg28ref, "Z0.", [if gcode$, feed], scoolant, e$
      if nextop$ = 1003 | tlchg_home, pbld, n$,"G90","G53", "X-12.", "Y0.", protretinc, e$
      else, pbld, n$, protretinc, e$
      if (subactv = zero & use_g52_shft & wrkofs_num = zero) | shft_flg = one,
        [
        n$, *sg52, "X0. Y0. Z0.", e$ #Cancel Work Shift
        shft_flg = zero
        ]
      absinc$ = sav_absinc
      coolant$ = sav_coolant
      uninhibit_probe$