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Author Topic: Mach Turn 1.84.001  (Read 7436 times)

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Offline Hood

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Re: Mach Turn 1.84.001
« Reply #10 on: December 27, 2007, 11:53:08 AM »
Do you share the Home and limit with the same switch on the X axis or is it two seperate switches?

Hood

Offline DAlgie

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Re: Mach Turn 1.84.001
« Reply #11 on: December 27, 2007, 01:06:51 PM »
Home and limit is the same switch on the X axis. It homes off as it should, but then throws the Estop after that. I tried playing with the limits settings, thought that if the measured limits were too close to the switch position it might screw it up but nothing there helped.

Offline Hood

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Re: Mach Turn 1.84.001
« Reply #12 on: December 27, 2007, 01:45:49 PM »
If when you home the X and it reverses then does the E-Stop, is there a message in the ticker tape window? Do you see the limit active on the diagnostics page?

Hood

Offline DAlgie

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Re: Mach Turn 1.84.001
« Reply #13 on: December 27, 2007, 05:25:57 PM »
The ticker tape message says "Software limits", there are no limits lights lit on the diagnostics page. Homing/ limits are set at softmax -0.100", softmin at -7.00". I had tried messing with the max limit to fix this but nothing seemed to work. The logic page, debounce setting for inputs is set at 3000, I haven't tried changing this lately. Thanks Hood.
               DaveA.

Offline Hood

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Re: Mach Turn 1.84.001
« Reply #14 on: December 27, 2007, 05:36:01 PM »
Should you have a minus number for both of them? this is the X axis? I wopuld have thought it should be a positive.
Hood

Offline DAlgie

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Re: Mach Turn 1.84.001
« Reply #15 on: December 27, 2007, 09:39:02 PM »
Yeah, I thought the same thing too, but I tried it both ways and it didn't seem to matter. I'll have another hack at that tomorrow and see if I can get somewhere maybe. Other than that I'm sorta stumped. I see that there are a few others recently that are having similar problems too, makes you wonder a bit.

Offline Hood

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Re: Mach Turn 1.84.001
« Reply #16 on: December 28, 2007, 03:36:15 AM »
Yes I have seen the guys recently having problems with softlimits but I am thinkng they may just be set up wrong, I talked one guy hrough them and I think he is now OK.
What I find as the best way to do the soft limits is:
Do your home with Soft limits turned off
Then move to one extreme and just as you are about to trip the limit change to Machine coords and take a note, then move to the other extreme and note the machine coords for it. These readings are you Max and Min that you enter into the softlimits. You can also enter a slow zone so that when at rapid speed the axis will have time to decelerate before hitting the limit. How much of a distance you need will depend on your motor tuning.

To my way of thinking the Max and Min should always be a positive number, well except for on a Mills Z axis.
 Do you use the Home Off entry for your  X axis?
Hood

Offline DAlgie

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Re: Mach Turn 1.84.001
« Reply #17 on: January 18, 2008, 12:33:08 AM »
Back from a test, so I am on this again. I use the Machblue screenset, and on the manual page where I reference the machine from, it has the three coordinate buttons, Program coordinates, Machine coordinates and Part coordinates. The first two, program and machine, show the exact same thing, both have the same value in them. The third one, Part coordinates, is the value Mach uses for it's softlimits, and I seem to be unable to alter in any way. The X axis Homing/ limits are set at softmax -0.100", softmin at -7.00" on the part coordinate DRO. This seem odd to you?
                   DaveA.

Offline Hood

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Re: Mach Turn 1.84.001
« Reply #18 on: January 18, 2008, 02:29:43 AM »
Dave
 I have never got to grips with the standard lathe screen sets in Mach, they just dont seem to make sense to me, especially  after using Mill for so long. I will load one of the standard screensets today if I get a chence and see.
Hood