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Danke! Ja ich stell mal HAL und INI hier rein. Ich hab gestern etwas Zeit mit ChatGPT verbracht was mir sagte, ich soll mal den Pin "In der HAL (Hardware Abstraction Layer) von LinuxCNC steuert der Pin motion.feed-override den Feed Override Regler." überprüfen.
Dann noch die Empfehlung, zwei Verknüpfungen rein zu nehmen:

net feed_override <= halui.feed-override
net motion_feed_override => motion.feed-override
Das hab ich gestern spät noch gemacht konnte es aber nicht prüfen, da komme ich erst abends wieder zu.
Danke für Dein Auge!
Hanno

Nachtrag: Habe diese Einträge heute in der HAL gemacht, die Maschine startet nicht damit - Fehler - halui.feed-override existiert nicht.

 

I disagre. There are many commercial systems that have been retrofitted using Mesa cards. A friend has a 35 tonne 5 axis machine controlled with Mesa. He uses servos not steppers.

Yes, usually you keep the drives (but often people replace them) and limit switches etc and remove the existing controller and replace with suitable  Mesa cards.
Ethercat is really a relatively new kid on the block for Linuxcnc. Its been around for a long time but it was very difficult to configure until the release of version 2.9

These drives do have a common input so you can run 24v for I/O
Also you can define an input to respond to an estop signal to disable the drive.
Dropping mains power is not ideal. Some big machines cannot be allowed to coast to a stop.
You could add a timer relay so the drives were disabled and stopped before the power was removed.
But this should be built into the safety relay if you are building a standards compliant safety system.
Ethercat in general seems to recover OK once powered on again.

Regarding 'Powell's dogleg' method, maybe these could be of interest, although I'm afraid I have no idea how to apply any of this:
cppget.org/least-squares-cpp?f=full#description
people.sc.fsu.edu/~jburkardt/cpp_src/minpack/minpack.html

Actually you can move on to eq45 which shows how to calculate the six variables gamma_i,(2,3,4). However to calculate those 6 variables we first need to calculate gamma_1,1, gamma_2,1 and s_1 which must be calculated numerically with the 'Powell dogleg' method of which I know nothing about.