Messages

1

General Mach Discussion / Re: I'm having trouble referencing home

« on: April 29, 2016, 11:31:37 AM »

BTW I have tried de-bounce 0 500 2500 3000, and still it hits the home and crashes.

2

General Mach Discussion / I'm having trouble referencing home

« on: April 28, 2016, 07:36:27 PM »

I have five axis in total,

for X Y and Z i have the limits and home setup. each axis has a single pin on the parallel port.

Everything is working fine with X Y Z axis, when i say reference home they go to the switch then stop and back off.

Now the problem is with axis A and B, i set the switches up the same way, each has a pin shared with limit and home, yet when I reference home they ignore the switch and crash.

I dont get it, everything is the same I think... And furthermore, in diagnostics, if I press the limit switch for A or B all three yellow lights trigger for Limit+- and home.

Any idea what the problem may be?

3

General Mach Discussion / Re: Backlash correction not working?

« on: April 22, 2016, 11:17:02 AM »

As noted BC must be enabled  and also look at the following:

http://www.machsupport.com/forum/index.php/topic,29149.msg204717.html#msg204717

RICH

Regarding that post, what is The Shuttle Wheel Accel?  Is that a specific setting or are you just referring to the acceleration of the motor you're trying to eliminate the backlash from?

4

General Mach Discussion / Re: Backlash correction not working?

« on: April 21, 2016, 01:46:46 PM »

im using the parallel port

5

General Mach Discussion / Re: Backlash correction not working?

« on: April 21, 2016, 12:37:51 PM »

OK.  still doesn't seem to do anything. I'm going to keep playing with it.

6

General Mach Discussion / Backlash correction not working?

« on: April 19, 2016, 04:58:46 PM »

If I move my x-axis forward three inches then back, it will be short by 0.02"

I entered 0.02 in the backlash setting for x-axis but is seems to make no difference at all what value I put there.

I saved by exiting the program and restarting.

Also, what does "enable backlash" check box mean on that setting page?

Thanks

7

General Mach Discussion / Re: Couple questions about Limit and Home switches

« on: April 15, 2016, 01:28:37 PM »

Personally I use the Auto Limit Override as it means you don't have to go to the Settings page each time.

Hood

yeah.  I think ill do that. 

8

General Mach Discussion / Re: Couple questions about Limit and Home switches

« on: April 13, 2016, 12:42:18 PM »

Also to Reset after you hit a limit you can go to settings page and press the Manual  Limit Override button, you will then be able to jog off after you press Reset.
Better still is the Auto Limit Override button on the same page, means you will just be able to press Reset and not have to press anything else.

As Dave says setting Soft Limits is also a wise move.
Hood

Ok the Manual Limit Override button worked, thanks.

For the soft limits, I enabled them for my Y and Z axis and both are sitting at the machine zero coordinates, however I am still getting this error "Machine out of limits for SoftLimit Activation" when i press the soft limit button.  do you have any idea why it would say this?

9

General Mach Discussion / Re: Couple questions about Limit and Home switches

« on: April 12, 2016, 01:55:17 PM »

 

Try hitting the R button on the keyboard when this happens.

That did not seem to work.  I still have to go back and disable the imputs to jog off the limit switch.

I'm using Mach3 R3.043.066

You can try going to General Config page and using some Debounce Interval, try 2000 and see if it helps, if it does lower until you get the lowest value without causing issues.

Ideally however you would want to get better quality switches.

If that is not your problem then attach your xml so I can see how you have things set up.
Hood

Setting the de bounce worked, it now finds home and then move's off the switch.  Thanks.  Now if it could do that on the opposite end when it hits the other limit switch that would be nice.

10

General Mach Discussion / Couple questions about Limit and Home switches

« on: April 08, 2016, 04:30:24 PM »

I'm trying to set up my limit and home switches.

I have installed two limit switches at the upper and lower bounds of my z-axis

They are daisy chained and wired normally on and connected to pin 10.

Under Config/Ports and Pins/Inputs  I have enabled Z++ Z-- Zhome and set them all to pin 10.

When I look at the diagnostics page, all three inputs light up if a hit either of the switches.



Firstly how do i override the limit switch once the spindle hits it?  At this point I have to disable the inputs then reset, then jog off the limit then re enable the inputs.

And Secondly, when I try to reference home the limit switch is triggered and the whole operation stops when the manual clearly says "during referencing limits do not apply".

Am i setting this up correctly?  Can i use the same pin for both Z limits and Z home?