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Understand. I use freecad to generate the gcode from 3d models. The gcode header seems to be the same. I compared a file that was causing the issue with one from 2 years ago. Only the date and tool size was different until after the G43 H2 line which prompts for inserting tool 2.
This is routine as I always create a different path job for each tool so they are always tool 2 ( 1 being the default tool).
Why did the behaviour change?

Thanks @aciera
It works, so easy. Thanks again! I am also adding a new drilling video.

The INI file has not changed in the last year. Why had this not been a problem before? I do try to keep linuxcnc up to date, so an update may have triggered it.

There is no need to change the ini file to get different behavior like this.
TLO can be activated/deactivated through Gcode (G43/G49)
Tooloffsets can be changed through Gcode (G10 L1)


Sounds like you are missing some fundamental concepts of CNC control. Without a sound understanding of Gcode you are bound to get affected by all kinds of pitfalls.
linuxcnc.org/docs/html/gcode/g-code.html

@ C0bra
In this forum the personal message is deactivated.
Please send me an email to This email address is being protected from spambots. You need JavaScript enabled to view it. an i will send you the informations. 

 
 
 

This are the screenshots when I try to install r8168-dkms.I did not delete the first installation at the start of the post
           

Similar issue. Home made router with manual tool change, linuxcnc newbie. machine has been working successfully for 2 years.
About a month ago, the tool started cutting deeper than it should. Initially blamed a mechanical problem and performed many tests.
Today I discovered TLO (as I mentioned, a CNC newbie) and found the -1mm offset was in the tool.tbl file. Had ignored this file up to this point.


The INI file has not changed in the last year. Why had this not been a problem before? I do try to keep linuxcnc up to date, so an update may have triggered it.

Thank you, I read that severat times, but didn't pick up on the significance. Cut and paste examples... After reading your answer, I found it spelt out in the spindle man page. Sigh.

spindle.N.spindle-rpm float out

Current spindle speed in RPM.+ve = forward, -ve = reverse. Uses the encoder input if available. If not, uses a simulated encoder speed.

You can also patch 'interpret.py' manually:
github.com/LinuxCNC/linuxcnc/pull/3176/files

Hello every:

When i use probe basic xyzac, I have a promblem.
I changed a tool #1 used m6 t1 g43, when i jog A axis, the tool rotaty at the tool top, not the bottom.
same thing on Axis UI is right, the tool rotary at bottom.
can i fix that?

Tim

 
axis GUI tool display
 
probe basic tool display

 

There is no feedback to linuxcnc,

That would be great, thank you. 

I’ll promptly flash my board and run some tests once that’s done. 

This is all kind of weird. I tested at the weekend the motors with different microsteps. If the levelshifter are the limits, with less microsteps I should have been able to run the motors faster, or? I am pretty sure that this wasn't the case. The motors stalled around 2100mm/min. I set up the machine that it would to max 1950mm/min. Tonight when I tested it again the motors stalled even at 1950mm/min.

Also I noticed that when I am not moving the axis, a stepsignal was created. The motor did not move but you could hear and see that the Tang was sending step signals. I increased the mircosteps from 10 to 16 in compare to the last time I tried the machine. Has that something to do with the set up of Linuxcnc?

I have to say that the wiring is currently breadboard style. I guess that won't help with 20khz plus signals.

Hmm, I must have made a mistake when measuring the signals. The Tang gives out a perfect 50% duty cycle. I was sure that the level shifter made the same. however they did not. The level shifters make something weird out of it. The level shifter have EL817 coupler on them. The datasheet shows cut off frequency fc =80khz. If I read that right I should not even be around 25% of what they should be able to do. They do have an LED, I wonder if a pulldown resistor would help???

I think @meister said, that I could connected the breakout board directly to the outputs of the Tang. I might try that.

 
 

OK that's probably supported.

When I get a chance I can make firmware for a 7I76E with one Fanuc
channel on the serial expansion port for testing. I seems that that's a 1M
CPR encoder.