UR201 sudden movement

[RsX]

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.

You are absolutely right.
Today I was vacuum cleaning the table and I noticed the Y axis moved forward, then backward a couple of millimeters. I thought that's not that bad, it must be the usual pendant bug. Then OMFG, somehow UCCNC received a cycle start!
This was scary as hell because the spindle turned on and the machine moved toward me at full speed!
How can this be possible?
I'll probably test the 1.2118 next, but right now I think the pendant is a safety hazard.

[cncdrive]

1.2118 contains several bug fixes for the UCR201, you can try to install 1.2118 and copy the plugin file to your existing UCCNC installation.

It received a Cycle start, well never heard about that.
What we fixed are issues when the pendant went to sleep and the wheel was rotated and coming back from sleep caused an issue.
Also we fixed a problem when it could not connect on startup, this only happened to a few users.
We also fixed an issue when removing the battery made the pendant to loose the RF tuning value from memory.
My collegue also made the communication error checking more robust, but this was only because we first thought that the mentioned sleep movements happens due to errorous packets, when we realised it was not the cause he already changed the communication prototol to even more secured.

[SpillSesh]

Gents, have had this issue for years. Has cost me two probes, work/stock and some underwear changes. Also posted here:
https://www.forum.cncdrive.com/viewtopic.php?f=2&t=3451&start=30
I have updated to V1.2118 but still getting the random uncommanded Z axis movements : (
I'm going to retire the UCR201 in favour of the wired MPG next order. Just too much hassle/risk/cost.

[cncdrive]

Verify that you using the proper channel USA or Europe according to the region you are located in, otherwise in the USA using Europe region can cause problems, because then the pendant will operate in the RF channel of the taxis.
The situation is similarly problematic if you using USA channel for EU.

[SpillSesh]

Live in Australia. I've tried all regions. I've implemented the fixes. Have spent years thinking: I just knocked it, or it was my stuffup, or I breathed on it wrong. But no, it was a software error all along. Just lost another probe and part today, that takes the total to 3 probes, many parts and a lot of confidence/time. I just don't feel safe using a CNC that 'may randomly rapid into a -Z crash because Taxis'.

So have placed an order through the web shop for a wired MPG. Have also ordered a few UC300ETH-5LPT cause I'm worried they'll go out of production and need stock on hand.

Gonna bin the wireless UR201.

[cncdrive]

Did you try the plugin in 1.2118 ?

[SpillSesh]

Yes, as per my post on this thread in May. I have also tried the 2.0.0 - still does the dangerous rapid -Z thing...
So I purchased the wired MPG from the UCCNC webshop https://www.shop.cncdrive.com/index.php?productID=1169. Figured it would plug right in via USB like the UCR201. Website doesn't have any info or a picture of the cable.

But it doesn't. It was shipped with a ?DB15? male connector, which plugs into neither my PC for the AXBB-E nor the UC300ETH. There was no documentation in the box, so I did a reverse image search. Turns out it's the DDMPG (Digital Dream MPG).

You have to go to Digital Dream User Manual for pinout. Also, I think the plugin for UCCNC that aligns is the CNC4PC pendant one, but the configure plugin link leads to an expired web page. So if you re-navigate to CNC4PC and find an MPG, which hasn't been updated for AXBB-E, you can find a pinout for a COM port. I have linked both pinouts below (they do not align)
https://imgur.com/a/LrzIquH

Really annoyed. Payed a lot for a UCR201 a while ago, have since broken so many tools and probes before working out it was a UCCNC software flaw. Thought I could solve the problem by buying a wired MPG from CNC Drive. Instead I am rewarded with no documentation, a sleuthing mission and the need for additional wiring/breakout/pin consumption.

All I want is a pendant that works and is safe. Instead I got years of wasted time, money, wrecked tools and parts - not to mention safety issues. Not good enough CNC Drive.

[cncdrive]

Why don't you upgrade to the latest plugin in version 1.2118?
That has the fix which caused this.