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I moved addf 5i24 write to the very bottom of addf statement list.
With P=1 and D=1.2 and other PID params = 0 I was able to jog Z axis up and down for 10-15 times. Changed to D=2 and a runaway on first attempt to move up. Lowered to D=1.5 and a runaway on first attempt to move up. Back to D=1.2 and I was able to move it for something around 10 times back and forth and then got a runaway.
One more thing is that runaways happen at the start of move when I try to move UP (and the runaway always is in opposite direction). There are 2 pneumatic cylinders that push that whole Z axis thing up to reduce the load on motor. I turned the motor by hand - moving up is slightly harder, I can feel a difference, but I would say that it is small

Ich hatte es auch auf meinem Laptop probiert und da passiert genau das gleiche. Ich muss nur starten etwas raus rein zoomen und es verschwindet. Wie kann ich meinen Grafik Treiber aktualisieren?
grafik Kernel ist i915. 

Habe jetzt von meiner Tochter den pc geschnappt und installiert und passiert genau das gleiche bisschen zoomen oder mit Mausklick verschieben und zack der Tisch ist weg.

anscheinend muss ich doch einen Fehler machen oder etwas vergessen zu installieren. Sonst würde es nicht an 3 verschiedenen Geräten passieren. 
pc Intel i5-2500k
laptop muss auch in dieser Liga sein
und lenovo thinkcenter m73

installiert Update, Upgrade dann linux cnc sim qtplasmac starten ohne irgendetwas einzustellen. Mausrad raus oder rein und weg ist er

Probably not easier than a SPINX1 but this is what I used on my Sherline lathe:
forum.linuxcnc.org/38-general-linuxcnc-q...tions?start=30#47712
 

I am trying to control my sherline lathe spindle motor which is typically controlled by a potentiometer that directly runs mains voltages. I have been reading older threads and have been trying to better understand my options on how to control this:

It seems I would need to generate a PWM signal from one of my mesa boards and use an isolated pwm to analog converting board like the SPINX1 - is that correct? Are there any other easier ways?


Also - how can I generate the PWM signal? I have read I can flash my mesa 7i96s with a specific firmware to give pwm on steppgen 4 - my concern with this is that I spent forever geting everything up and running with this lathe, and am worried I will break something

I also have the mesa 7i85s (and 7i92TM) which I read can generate pwm. I am not the most savvy with this stuff (hence it took me forever to wire up a 2 axis lathe) - so I am looking for advice on the simplest (and safest) way to accomplish replacing the potentiometer control on my sherline lathe spindle for linuxcnc control

Please help and thank you so much!

I have a couple machines using beckhoff stuff and ethercat. 
I got a small 5 axis mill that seems to use analog and digital io cards from a company called cscam from south korea. 
I think they may have gone out of business, I am trying to contact them but with no response. 

I have been looking around and cant seem to figure out how to approach this. 
Everyone seems to say just get the xml from the vendor. 
If that isnt an option can I reverse engineer this? It seems I can get a list of the pdo and sdo from the slave via a running master. 
Then it seems like some sluething and some luck and I might be able to figure it out. 

While I continue to try to find the manufacturer might anyone be willing to just give me a heads up if this is a fools errand or possible with some work and some luck. 

The machine i have is missing the pc with controller but everything else is intact so if I can just get the ethercat analog and digital cards working I am done!

Do you need to drive 10 Steppers ?

Yeah the max stepgens or whatever are built into the firmware.
If you make a request Pete will build firmware to your liking, he's a top bloke like that.

If you download the 7i92t.zip file under specs on the 7i92t product page it has numerous firmware .bin and most have an accompanying .pin file that has the pin description for each.