Inconsistent values from Versaprobe

I suspect that I may have found out what is going on.

I was reading thru the setup instructions in the qt_auto_probe_tool.ngc file being careful not to
"read-thru" anything that I may have missed. This sentence caught my eye:

The following workflow assumes using both a XYZ probe and a Z Toolsetter:
;    1 - Initial Setup: Before beginning the program, setup the Probe Tool as 
;        having a zero z-offset in the tool table.

My tool table file did not have an entry for the Z-Height of zero. So I added the entry as follows:

T99  P99  D+2.000000 Z+0.0 ;3D Probe

I started the test program that I had and everything worked as intended/expected. However, as it was getting late in
the evening when I tested I tested with a much shorter end mill than my previous tool which was the longest mill in my
inventory. Today, I will retest with the longer tool and report results. I'll have to look in the code and see if I can find where
the tool Z is picked up and see if there's any room for improvement if this is indeed the problem. Hence, if the probe Z has no value,
then assume zero?

 

Basic Probe and Versa Probe are two different programs.

It appears to me that Basic Probe has fewer options than Versa Probe.

The documentation for the two should be separate as to not confuse the reader. I see if I can add some value to the docs.

gardenweazel wrote:

Basic Probe and Versa Probe are two different programs.

 

I know that there are two different ones. I just wanted to check whether the error occurs there too

gardenweazel wrote:

T99  P99  D+2.000000 Z+0.0 ;3D Probe
 
 

my tool table looks like this:

T1 P1 X0 Y0 Z0 A0 B0 C0 U0 V0 W0 D2.00000 I0 J0 Q0 ;touch probe

Z0 is included in all of them. When changing tools to a new tool, strange Z values ​​occur which are then entered into the tool table at Z when the tool is changed.

The new milling cutter then has a value of 155.34 at Z and then wants to travel 214.45, for example.

even though my maximum travel distance is only 145 in Z

I am running into similar problem but maybe I found root cause. Need to do some more testing but please check below and share the result.

Can you please do the following:

• M6 overwrite routine macro - On the tool change remove all the G43 command except one at the end after tool measurement., in my case it was m6 g43 on semi manual change
• start linuxcnc
• go to tool table and set in column Z =0 for probe and two random tools which you later test on example T1 and T2.
• load probe m6 t99
• go to object and measure it.
• change to t1: m6 t1 with tool measurement
• check if offset is correct if so try another tool t2
• if T2 is ok now check other tools (one which has Z <>0 value in the tool table)

I have rack change for tools 1-5 and rest I am changing manually in the position. And I notice that the tools changed manually i was lading with M6 G43 in the tool_change macro. This causes error as I was changing G54 Z offset after loading tool. I need to make more test .

cheers
Michal

I'll test this later this afternoon.

Thank you so kindly for assisting.