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Messages - jevs

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211
I do have single unused home switches on X and Y. I suppose I could use those to make it safer for those axis. Then wire the limits to the E stop or something.

See attached. There are several unused switches in the Z. Maybe I can tie one of those in with the cutting area Z home. Then it would stop before hitting the limit. Then just wire the limits to the E stop also or something.

Not sure how you will move off the switches if it is tripping E stop. I guess you would need a manual toggle switch for override on the control panel.

212
My home switch is not active once Z moves up past it. It is just a dog hitting a roller. Once it goes past, it is off and not being seen as an issue.
So if you hit Reference Home, I guess it just runs forever even when the limit trips.

213
Ok, now that everything is back in one piece. The home of Z is at the top of the cutting area. The tells it where home is for its actual cutting area use.
It has to go up past this to do a tool change.
The Limit switches are actually at the very top of z and at the very bottom of Z. This encompasses all of the tool change area as well as the cutting area.

Z does stop running if I trip the home switch.

It does not stop when I hit the limit switch.

What I suspect happened is that Z got above the home switch into the tool change area by me jogging around.
Then I hit Reference All Home.
Then I guess it did like you say and ran out of control past the limits and never saw the home switch because it was already past it.

X and Y do stop at the switches during a reference home. They are tied as limits and homes.

So, this is making more sense now.

So, now I have to figure out what to do to fix this so it does not happen again.

214
NM fixed it. Had to run a restore to an old save.

215
I moved that xml on accident and then started mach. It started going through the start up stuff. I exited and put the xml back. Now it lost everything.

216
By the way, that stupid "there is already a file with this name" thing is super duper annoying and made me try like 5 times to post this grrr...

217
Here is the XML. Here is also a schematic of my machine I did years ago when I built it.

This should help while I finish cleaning up my mess and get the machine back together.

I have to research it all over again to remember what I did way back then....

I did change to an Ethernet SmoothStepper when my computer died and I built a new one. I wanted to run windows 7 and quit fighting with parallel ports...
So, the schematic is the same except the smoothstepper feed into the Machmotion I/O boards parallel port connectors.

218
Mach3 broke my machine last night while I was trying to repeat another issue I was having.

I was having issue where an axis would not stop running randomly when I let go of the enable button on the pendant. Pressing it again would stop it, but more than once the limit switch was the saving grace.
While testing the possible fix on that, the limit switch in Z got ignored by mach. This is not the first time for that except this time it broke.
 
I think a pokeys update MAY have fixed the first problem. I could not replicate it after the update and correcting the direction of the encoder (was set to move the wrong way). So after a long time trying everything to duplicate the runaway axis, I could not. Everything was working perfect. I decided to do a Reference home. Bad move....
Bam, Z never stops, it goes up, rotates the turret, but then keeps driving even though the limit switch is tripped and lit on mach.

Well, I had an update document that came with my machine on a part that needs to be replaced for safety from who knows when...1980s maybe. They never put the part on and I don't have it. Well sure enough, this last crash snapped a bolt and two bent and then it proceeded to rip my ratchet rod ball link apart (pulled the lock ring out), then the giant linear bearing hit the rubber pads and that was the end. I did not notice any of this happened until it got to the end and made motor noise still. I hit the E-stop.

 So, I took the Z motor belt off so it could spin free. Sure enough you hit the ref button and it spins forever, even when your hitting the limit switch manually and Mach shows it activating.

I was told this could be normal??? This is super dangerous on my machine. This is not a $600 Chinese mill. The AC servos are strong and will break things. It has crashed before like this and broke my link rod, but the other part was able to stop it.

So, how can you reference home and zero everything out without breaking the machine??

Something must be up with Z that it loses its location or I am doing something to make it lose its location since it never stopped.

This machine has a weird Z, where the upper portion of Z is used for the tool change. I wrote the macro and got it working a long time ago, but this is not going to be safe. I have to figure something out.....

Here is the old thread on that.
http://www.machsupport.com/forum/index.php/topic,18069.0.html

So far I do not recall X or Y crashing since I have been done. When they kept going using the pendant, the switch made an E-stop like I would expect. Then I am able to just override limits and back it up.

If you cannot use the switches at some point to set home, how will it ever know where it is if it loses position?

219
PoKeys / Re: Pendant MPG moves backwards
« on: March 13, 2015, 09:02:57 AM »
In my case, my pendant is all plug and play and "connectorized", so that would have involved disassembling a DB25 (I think) or the pendant itself, unsoldering pins etc.
That would work, but too much work in my particular setup. I am glad they give a swap option or I would have been stuck doing that.
I am finding that I think I like my control panel jog buttons and twist knobbing to the speed I want better than spinning the wheel on the pendant though. It is nice though if you want to get a closer look and not be reaching up to the panel.

220
PoKeys / Re: Pendant MPG moves backwards
« on: March 12, 2015, 08:31:09 PM »
Figured it out. You have to got to Peripherals, select Fast Encoders Settings, then check the box for Invert Direct of the Encoder your reversing. Then go out and write it to the controller.
Since it is a fast encoder apparently you cannot edit those in any way on the main screen.

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