UR201 sudden movement

[Svarv]

Hello
I have the same problem with my ucr201.
but I have a solution to the problem, use Safety button mode left
or right or both, dont use disable.
then it works!
I have a video of how it malfunctions,
I can email it if anyone on cncdrive wants to see how it behaves

[RsX]

Hello
I have the same problem with my ucr201.
but I have a solution to the problem, use Safety button mode left
or right or both, dont use disable.
then it works!
I have a video of how it malfunctions,
I can email it if anyone on cncdrive wants to see how it behaves

If you are here you'll soon find out there is a new version of UCCNC that solves about 5 years of issues.
I know because I did the same

[Matt]

If you are here you'll soon find out there is a new version of UCCNC that solves about 5 years of issues.
I know because I did the same

Which version are you referring to? I downloaded one from the forum a few weeks ago but it still had (albeit less frequent) issues with unexpected axis movements.

[RsX]

If you are here you'll soon find out there is a new version of UCCNC that solves about 5 years of issues.
I know because I did the same

Which version are you referring to? I downloaded one from the forum a few weeks ago but it still had (albeit less frequent) issues with unexpected axis movements.

v1.2117 solved it for me. I had the issue happening when the screen turned off and I pressed any button on the pendant.
Which version are you on and when does the issue occur?

[Matt]

If you are here you'll soon find out there is a new version of UCCNC that solves about 5 years of issues.
I know because I did the same

Which version are you referring to? I downloaded one from the forum a few weeks ago but it still had (albeit less frequent) issues with unexpected axis movements.

v1.2117 solved it for me. I had the issue happening when the screen turned off and I pressed any button on the pendant.
Which version are you on and when does the issue occur?

I am also on 1.2117. The unexpected movements are better but not completely gone. So far it has only happened on my X axis since the update. Before it was happenings on all of XYZ. I'm questioning if it's some sort of electrical interference issue. Just out of curiosity, what are you using for a control board?

[RsX]

I use an AXBB-E.
Do you have any buttons or another handwheel/keypad connected to the board?
The AXBB-E did give me false inputs, triggering the limit switches, and the signal debounce feature solved the issue.

[Matt]

I use an AXBB-E.
Do you have any buttons or another handwheel/keypad connected to the board?
The AXBB-E did give me false inputs, triggering the limit switches, and the signal debounce feature solved the issue.

I don't knowingly have anything else wired in for direction or step signalling, but now I've got to go take a closer look on the chance one of the defaults had something setup for this. I'm running using a UC400ETH so for now at least I'll assume it's not as likely to be a hardware issue.

I was thinking it could be some feedback from a VFD but sometimes these movements happen when there is no active VFD.

The hunt continues!

[Grey]

I am using UCCNC with the UCR201 pendant. I am using the AXBB-E board.

When I move the spindle with the pendant and then wait until the pendant screen goes black and interrupt it with any button, the spindle rapidly moves a few inches. This is completely repeatable and you just need to time the waking up of the pendant correctly. Just after the screen goes black. You also need to move the spindle initially. Occurs in both velocity and step mode.

I have tried UCCNC 1.2113, 1.2115, 1.2117 and all contain the bug.

I see several references to this bug on this forum including a video demostrating it. Is there any known fix or work-around?

The bug is obviously annoying as it is difficult to avoid and will damage the workpiece and/or break the end mill.

[Grey]

I played with the bug for awhile.

When the pendant is shutting down it obviously saves the location and when it wakes up it loads it. If you interrupt the pendant while it is shutting down it is in some intermediate state where it has not saved the current location and loads the old location and tries to jump to it but only applies the jump to the currently selected axis.

For example if you start the pendant at 0, 0, 0 and move it to 1,1,1 then interrupt while it is shutting down it will jump -3 on the currently selected axis so assuming x is selected the spindle will move to -2, 1, 1.

Is the source code for the UCR201 pendant plugin available for download?

[cncdrive]

Yes, that was exactly the problem.
The issue was that we could not reproduce it for a long time, but a few weeks ago we found a way to reproduce it and already fixed the problem.
So, this will work fine in UCCNC development version 1.2118.
We working on the release, but there is an influence epidemic here and me and some collegues got ill, which delayed the process.
I hope we can get the new release out in a few days.