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Author Topic: z steper trouble  (Read 12172 times)

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Re: z steper trouble
« Reply #10 on: December 16, 2012, 12:00:38 PM »
have you tried removing norton

Offline Hood

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Re: z steper trouble
« Reply #11 on: December 16, 2012, 01:13:22 PM »
You may be able to use a volt meter and  although it will not give you as clear an idea as a scope would it should be good enough to see if the port is putting out pulses when its not meant to be.
Hood
Re: z steper trouble
« Reply #12 on: December 17, 2012, 01:02:21 AM »
Hood, I was a millwrite. I am not sure what you are talking about. What Port and where do I find it. Completely dumb on some of this stuff. But I am learning through the school of hard knocks as long as I can fine teachers

Also I did some more playing today. If I zero the DRO and move it in a direction, then move it in the same direction, it works fine. Change directions is when it separates its self and keeps running. Zero it out and it will work in that direction till I change again.

I haven't removed Norton basically because it's a comcast package> I will remove it in the near future when that computer becomes a designated computer. It almost is now.

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Re: z steper trouble
« Reply #13 on: December 17, 2012, 03:04:00 AM »
Ideally you would change the active state of your E-Stop in ports and pins which would then allow you to disconnect the parallel port cable from port 1 and still be able to reset Mach. Then measure the voltage between pins 6 and 25 on the port. Do your tests and see if the voltage continues after Mach has stopped but when the motor would be running away. You will likely need the voltage setting in the  mV range as it is a pulsed voltage so you will not see anywhere near the 5v you may expect. That will not matter however as all you are interested in is whether the voltage continues after the DRO in Mach has stopped.
Hood
Re: z steper trouble
« Reply #14 on: December 18, 2012, 05:59:10 PM »
I did go to ports and pins and unchecked port 1. I measured pin 6 and ground to pin 25. I got a steady 0.5 MV

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Re: z steper trouble
« Reply #15 on: December 18, 2012, 06:26:48 PM »
when it was moving ?
Hood
Re: z steper trouble
« Reply #16 on: December 18, 2012, 06:33:01 PM »
Yes

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Re: z steper trouble
« Reply #17 on: December 18, 2012, 06:34:57 PM »
Ok just to clear things up
You jog or command the Z and you get 0.5mV
You stop jogging and its still 0.5mV?
Hood
Re: z steper trouble
« Reply #18 on: December 18, 2012, 06:47:42 PM »
I coded g01 z3.000 f05 and measured it for some time, , I didnt measure it stopped. I can though

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Re: z steper trouble
« Reply #19 on: December 18, 2012, 06:50:45 PM »
Suggest you command as fast a move as you can. A voltmeter is not the best to use so if just commanding a slow move you will not see a lot of difference. Then again 0.5mV is absolutely nothing and even feeding at 5IPM should show way more than that.
Hood