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Do you get the same if you use a program rather then MDI?

So as far as I know the kinematics need to be created so I have been taking a stab at that and have something to test.

Are you sure it's not your kinematic that creates the runaway?

Hey all,

I'm working on a 5 bar parallel robot setup.  Something similar to this.   5Link Robot

I cant seem to find if that person had a repo or config they shared. So as far as I know the kinematics need to be created so I have been taking a stab at that and have something to test.  At the same time the hardware I'm testing with are the Beckhoff 7041 stepper cards.  I have two nema 17 motors connected to the 7041's and have LCNC connecting to them with no issue.   The problem I'm having is homing.   I don't have any home switches setup right now.  Because of the kinematics I cant home at 0,0  I need to home in a position that fits in allowable space.  I have the joints setup So they home immediately. Hove Search and Latch Velocities = 0 along with Home = 0 I did set the Home offset to the positions I want the joints to be considered at.  When i fire up axis and home the joints Joint zero starts running away limited to the value I set in Ferror. I'm confused if i have a hal problem with the Ethercat setup or if something else is at play as my understanding is that the joint should not cause motion and be set as home with an offset of 60.  What May I be missing?   

Not quite sure I understand. the position feedback should work whenever LinuxCNC is running
so is seems you should just set the position to retract the head at the end of the Gcode.
In addition the initial Z position should be in the retracted position.


 

This probably doesn't belong to this specific place on the internet, but I'm posting it here anyway, 'cause it's in my head and I want to get it out:

As I have said many times before to anyone willing to listen, I fail to fully grasp how forums work. In my head, the right way to present a question, problem or dilemma is to give as much backstory and context to the problem as I can, so that the people that would know the answer would also know why I am asking and can see my full logic behind the problem. Ultimately, it's because I want to learn something, more than just solving my immediate problem, hoping the answers will have as much context as my question.

But that's not the way forums work. There are basically two outcomes:

1) Someone replies to the question they think I asked, in their own way. I usually have to clarify that the response doesn't apply to my question. Then they get offended and the rest of the thread is an argument about my attitude instead of an answer to my question. Onlookers pile on for predictable reasons, I disengage, and then a year later someone answers my question.

2) Someone replies to a small part of the subtext of the question, and not the question itself. Ten pages later, I still don't have an answer. Turns out, all the experts in the forum never thought of that. Over the next three years, people DM me instead because they didn't want to be on the wrong side in public.

I understand that I cannot demand better answers; I have no control over how people respond. I have control over:

1) How I ask questions;
2) Where I ask questions.

I need to get better at both.