Inconsistent values from Versaprobe

Not sure If I bring anything but :
once you start machine and load tool z offset is present ?
I have problem with G43 on the first time after starting machine. Even my macro for tool change issue G43 after program is executed z offset disappears. Once I manually issue G43 everything is working than fine.

I have no idea how I can track what is causing this problem
my workflow :

Start machine
home all XYZ
load Probe (M6 T99) , during subprog execution z offset is visible for split of the second and than disappears)
G43 manually from MDI - offset now visible 
Probing part and zero G54
M6 T1 -all offsets are correct, if I don't issue manually G43 all the offsets with all the tools are messed up later on.


 

Hi,
Thanks for your feedback! Based on what I am seeing this appears as if its an issue with the G43 and G49 entries in the gcode.
Which is why I included a copy of my gcode in one of the posts in this thread. There are both G43 and G49 code changes in the qt_auto_probe_tool.ngc script.
I suspect that there may be some quirks that might be disabling/enabling these two codes.

Strange enough is the value of #5070 probe fail/succeed passes each time with a one(1) succeed.

I have not even tried(recently) to do a tool change in mid code(other than the initial beginning tool change) for fear of crashing, etc...

Its also worth noting that the post processor for Fusion 360, EMC2 in my case doesn't inhibit the call to G43 despite having the following two lines in my PP script:
outputToolLengthCompensation: false,
outputToolLengthOffset: false

To further complicate things, I've also noted that using tool number zero as my probe doesn't seem to work very well. I've moved my probe to tool number 99 as of now.

It would be nice to hear from some of the seniors as to their take on this issue.

Strange enough is the value of #5070 probe fail/succeed passes each time with a one(1) succeed.

#5070 returns '1' if the probe succeeds which seems to be case. Looking at the 3 screenshots indicates that the actual probing works fine as the resulting 'calculated offset' values are very close.

Seems to me that the problem is somewhere after the actual probing has taken place.

[edit]
I wonder from where in the code this comes from:
'Return to original tool-tip position using new z-offset: ...'

Agreed on the "probe succeeding".

I added this in order to see what is taking place:
'Return to original tool-tip position using new z-offset: ...'

I've noted from the script that:
#<touch_result> = #5063
which equates to 277.16xx in this case. Fairly consistent thru the 3 attempts.

I'm attaching the script as I have it now including the extra debug messages.

It's worth noting that immediately after the second touch-off the program aborts. There is no movement for any axis.


 

It's worth noting that immediately after the second touch-off the program aborts. There is no movement for any axis.

The read ahead will start ingesting gcode again as soon as the touch off is completed and as soon as it reaches a command that would violate a limit the program will abort. This is happening well before actual execution of the queued motion commands.

Understood, Here's the lines where I suspect may be problematic, these are all after the touch-off:
#<touch_result> = #5063
#<calculated_offset> = [#<touch_result> - #<_hal[qtversaprobe.probeheight]> + #<_hal[qtversaprobe.blockheight]>]
G10 L1 P#<tool> Z[#<calculated_offset>]
G43
(DEBUG, Return to original tool-tip position using new z-offset: #<local_start_x> , #<local_start_y> , #<local_start_z>)
G53 G0 Z[#<_ini[VERSA_TOOLSETTER]Z_MAX_CLEAR>]
G0 X[#<local_start_x>] Y[#<local_start_y>]
G0 Z[#<local_start_z>]       <

---

LINE 244

The last line above is line 244.

The G53 call I have as -5 in my ini file. Which is an absolute call as I understand. The local variables are just that and
do not change when the sub runs.
The calculated_offset is consistent throughout the sub so that can be ruled out, I believe?
That leaves these two lines:
G10 L1 P#<tool> Z[#<calculated_offset>]
G43