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Your ini start up line has ag20 in it, change to g21.

Homing sequence is set in the ini, read the lcnc docs for how to configure homing settings correctly. All homing is stock linuxcnc motion. Go to home is for the go to home button. You can edit it to suit your needs, but has nothing to do with homing. All homing settings are in the ini under each of the axis sections.

I finally got good results of making a servo out of inexpensive bldc motor and drive using 6i25_7i76_7i74 and 1 micron resolution linear encoder. I consistently get repeatable positioning of the axis within 4 micro meters measured from an external device. Now I'm wondering if there's a way to offload the PID calculations from running on servo thread to the FPGA? I'm guessing this will open up options for adaptive control algorithms to run on the fpga down the line. How much processing can we push on the fpga and the daughterboards? Does the daughterboards also have some hardware for processing?

weiiird. is that mm for f error?
what axis?

Mine are omron, so no help there but when they stop, they are within 2 encoder counts (20 bit). I wonder if there is a feed forward thing where its just not bothering to catch up after stopping. I think i had that on my brother analogue servos when i chose some bad settings.


(also , side note, i need some help with ethercat setup, haha)

that's still very decent. my machine is "faster than most". yours is more in line with what most people will be doing with these servos i expect.

omron 200w servo. 1G, 3000rpm. (cant wait to get it to 5000rpm muhahhaha!


jmc motors in use. 0.3G, 12m/m (pulse limitation). The real issue with these is they are soft. like even though they track with feed forward, stiffness is so low that cutting forces push the axis off track by a thou or 2. Need to take a spring pass ore 2 for a precise cut.


My hope is that these lichuans will be a step well above the JMC but still "cheap and cheerful" for my production machines. Cause those omrons cost more than the machine frame
 

In your ini file check this line

Line 277 for joint 4
STEP_SCALE = 3.9307 # 1414.752 steps / 360° for 10-tool carousel

AI isn't worth the effort.

Can you post the error reports as well, so we get the full picture.

I have been searching around and can’t seam to find a dedicated QTPlasmaC sheetcam PP. I looked in sheetcam and found LinuxCNC-PlasmaC but not sure if that’s for the QT. Any help would be greatly appreciated. Thanks guys. 

thank you. Now I keep getting an error hal:132 setp requires 2 arguments,10 given. Ive been using AI to help me but I cant get past this error. I will attach my hal files incase anymone wants to check them out. Thank you.

It took a while, but I managed to solve the problem.

Thank you to tommylight and Aciera for your advice.

I've posted more details at

forum.linuxcnc.org/ethercat/55535-question-of-homing#323788

Thank you very much.

Hello everyone.

I have a report. The problem has been solved.

There was a misinterpretation in the HAL file I wrote.

I moved the two lines

addf motion-command-handler servo-thread and
addf motion-controller servo-thread

before the PID-related lines.

As a result, Homingd operation became normal.

I read the manual carefully and thought that if I understood it, I would not have to apologize for the order of writing.

I am Japanese, and it takes a lot of effort to understand English manuals at the same level as Japanese. Even when reading a Japanese translation, there are some parts that do not match the original English text.

If there is a part that describes the position of writing such as addf motion-command, please let me know. I would like to understand it well. Thank you for your valuable advice, andypugh.

Thank you.

That worked thank you!