Remora - ethernet NVEM / EC300 / EC500 cnc board

I think that's explained in the Linuxcnc manual. If you look in that it may explain how to do it. What mill is it ? My .hal file I uploaded a few posts back. Have a look at that. It's a lathe though. I'll be starting my mill with remora next month.  I'm waiting for parts to arrive, to build a circuit to drive the 12v stepper drivers  first. My mill has limits and prox sensors.

Well, the suggestion to put a pot on the input seems to of done the trick, as I had to go look at the pictures in the manual again I noticed the factory had the signal on the wrong pin on the VFD. (sigh) Hooking up the pot worked and when the correct pin was wired in, it's working!!! So that problem solved. At least now I can focus on the limit/home switches all on one pin.

Thank you Murphy and Cake! I'm a bit overwhelmed seeing the spindle work as it should. Thank you!

Murphy wrote:

I think that's explained in the Linuxcnc manual. If you look in that it may explain how to do it. What mill is it ? My .hal file I uploaded a few posts back. Have a look at that. It's a lathe though. I'll be starting my mill with remora next month.  I'm waiting for parts to arrive, to build a circuit to drive the 12v stepper drivers  first. My mill has limits and prox sensors.
 

If your thinking about here - linuxcnc.org/docs/html/config/ini-homing...witch_example_layout - that seems to be for only one axis. I get that and it works. My question is how do I add 2 more axis with shared limit/home switches onto that one pin. That does not seem to be explained.

I'll try and find my old .hal file for my mill tomorrow , I  got that working with prox and limit switches, I think they were all wired to one input also. It was with a BOB though not remora 

I think it homes one axis at a time. Hits the switch backs back off again a set amount. Then moves on to the next axis and so on 

Murphy wrote:

I'll try and find my old .hal file for my mill tomorrow , I  got that working with prox and limit switches, I think they were all wired to one input also. It was with a BOB though not remora 

I think it homes one axis at a time. Hits the switch backs back off again a set amount. Then moves on to the next axis and so on 
 

Yes, that is how my homing works. Z first (don't want anything attached to the bed to crash into the head, then X, and finishes up with Y. That part works great, with a little odd behavior with the Y as it for some reason hits, backs up and comes at it again real slow, like it's probing, then jumps off a few mm and zeros like the other 2 axis. Attempting to add in the limit sw config, Z will home properly and then reports that a limit switch was tripped and the homing process is stopped dead.

hey spyder, the y axis is the one you want to copy, that sounds like the proper one. , so after it homes, i think home offset is where it goes after homing. if you set the home offset to be off the switch, it should be able to home the next one. observe how and where your y axis is going, and copy it to the other axis, it will involve inverting these numbers to be negative or positive. refer to the manual for verification of which direction does what.

Murphy wrote:

Thanks Cakeslob, I forgot your using the stm32 :/ the code in the hal file is the same for 0-10v and PWM ? Just the gain determines the difference?
In my VFD there is an option for 0-10v, 0-5v and external digital signal. Is it 0-5v or digital signal for PWM ?
@scotta , any ideas why it's doing this?

the gain thing was my mistake, they are both the same. remora outputs pwm, and if your hardware has a 0-10v, it will convert it to analog with the op-amp hardware circuit. digital signal might be referring to PWM

The more I think about this, It could very well be the PWM conversion onboard the EC500 is just to slow. It may not be able to keep up with the CSS speed adjustments. Any idea how to set the EC500 to output PWM instead and I'll hook up a PWM to Analog conversion board to test it. I know in the documentation you can switch it using Mach3 software.