Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: DAlgie on December 26, 2007, 06:53:41 PM
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Hello, I have been using the release 1.84.001 for turn, this was a good release awhile back, but wondering now if there is a newer, better version out, or if the turn version has even changed at all. I was looking for a debounce setting for the limits as I have had an ongoing pain with referencing but see that 1.84 has no debounce setting for limits.
DaveA.
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You sure there is no debounce? I dont think I have ever seen a version without it but then again I never use it so may just not have noticed.
Hood
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Hey Dave, I had trouble finding it in M2 Turn.
Config...
Logic...
Lower left corner.
I dont have your version though.
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Hey Dave, I had trouble finding it in M2 Turn.
Config...
Logic...
Lower left corner.
I dont have your version though.
What version are you using, it must be ancient if you still have the logic tab from the config menu :o
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Mach2 Turn 6.11N Ancient ? ? ?
Is Dave's version like the Mach3 R2.6 ? That's what I'm using now but I still have the older, (Ancient) one in my PC.
RC
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Ah sorry missed it was Mach2 and yes thats ancient LOL
I am not sure when things changed but I think 1.84 had the single General Config page. Will just go install and check it out.
Hood
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Yes 1.84 still had the seperate Logic and State pages, so where you said to find it is correct.
Hood
Ver 1.84.001 is from May 2006, nearly two years old and with the speed that Mach moves thats a long time I suppose :)
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Well, over a year ago 1.84 was a recommended version for turn, and I have lived with this limits problem since then, it's ok once you know how to get around it, but still a pain if you haven't fired the thing up in awhile to remember how to do. I will go back to the shop and have another look, I was looking where you guys said to look, config, logic, left lower corner, but it has debounce settings for spindle encoder, and another one I don't remember right now. The other one is set to 3000, I do remember that, but it said nothing on it about being for limits. Thanks,
DaveA.
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Dave,
the other debounce setting is for Inputs in general of which Limits are. However if you have it at 3000 already then I think your problems must be severe. What exactly is the problem you are having with the limits during referencing?
Hood
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When referencing, the X axis causes the Estop to come on. I then have to open the limits flyout screen and turn off soft limits. Then reset the Estop. I then jog the X axis away from the switch, then turn the soft limits on again, and this fixes it. I don't have this problem with the Z axis for some reason, but the Z axis is a reference switch in the middle of the travel, so I always thought that that had something to do with it. I have had two different types of limits switches on the X axis, changed just for an accuracy reason, but the same thing has happened to both. Both the X and the Z axis limit switch wiring run in similar paths so I have reason to believe it's not an interference issue, and I never get false limit alarms.
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Do you share the Home and limit with the same switch on the X axis or is it two seperate switches?
Hood
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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.
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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
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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.
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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
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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.
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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
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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.
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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