Advanced Search

Not sure how the potentiometer was used but It could replace home/limit switches
(and since it's absolute no homing cycle would be needed at startup)

The encoder is possibly used for both position and velocity feedback

Is there another motion axis?

 

The machine has been incredible for 10 years. I think something got messed up with the files. I sent them to the guy that programmed the machine to see if he could figure it out. Thank you.

LCSC offers custom panel fabrication.

They aren't fast, but they are inexpensive and good, if somewhat odd.

Too low cap rating?

I have a 12V Delta PSU (configurable to up to 14V) that has only 16V caps!

2V of safety margin!

Does the pot have hard stops?
How many turns does it take to hit those stops, if any?
How many degrees can it turn, if it does less than 1 turn?

Kieran wrote:

Im thinking I can send-cut-send a panel, with switches as desired, and use a keyboard USB "brain" to read them. then basically map them however needed at that point. that's the easier part for me. Learning the computer/software GUI stuff is gonna be a learning curve.
 

S-C-S is a great idea.  And I sympathize with you about the software learning curve... 

OK, I understand.

But what is the operating condition of this potentiometer?

- Is it precise enough for me to use it for position control and the encoder for speed control?

- it only allows the machine to be homed without moving to a homing switch (the embroidery machine doesn't have a home and limit switch).

- does it allow homing and limit switches? If so, would a potentiometer for travel limits be useful in addition to the soft limit, or is the soft limit enough?

 

@Pippin88,
Why the report?

It looks like the G code is trying to reference / point to another file?

How was the g code generated?

Am I understanding correctly...   Linuxcnc "talks" to Hal, Hal used XML to translate to the ethercats. so xml is like an " hardware even more abstract layer". So I should assign "X Y Z A B" names in the XML and then Hal can control the servos from then on by those names? Im assuming the ethercat slaves show up in the order they are physically plugged into the chain? or is how they are plugged together not matter much? I guess I have to dive into the "debug software" for the servos too and set up the electronic gear ratios and whatnot. 

Thx a lot!!
I will take a close look at both. Finally a first point of reference from which I can work my way forward.

Then let's keep each other up to date.

I think I can see a way to do this, as Andy explained I will take a look at this when I get a bit of free time.

Its a bit tricky because the first index detections ( used for latching the position ) will zero the position
so the latched count + encoder position must be used for feedback until the final homing to index
is done.

What I was thinking is that the detection of the desired position difference enables passing the index detection
to LinuxCNCs motion component.  

Nice welds on your control panel.
Mark

Mine are old, so just basic LS403's with a single index. Sorry for that confusion.
Mark.