Messages

21

General Mach Discussion / Re: Can't get G31 to work

« on: October 05, 2012, 01:26:19 PM »

Now to work on my next issue on this machine.
A new topic is surely coming

22

General Mach Discussion / Re: Can't get G31 to work

« on: October 05, 2012, 01:25:22 PM »

Thanks everyone for your help. Specially Gerry.
Got it working finally!!!!!!

I added a few small capacitors (.1uF), one just across the input on the board and another on the chassis probe connector.

It's really nice to see it working now.

Thanks again, your help is great!!!!!!!!!!

23

General Mach Discussion / Re: Can't get G31 to work

« on: October 05, 2012, 12:03:58 PM »

It's definitely noise.
the probe seems to work ok according to the screen LED. The pulse is too fast to be seen on screen.
I disconnected the probe from the board and steppers move the table all the way I say in the command, this never happens if the probe is connected.

24

General Mach Discussion / Re: Can't get G31 to work

« on: October 04, 2012, 09:34:50 PM »

Thanks for the tips.
I added a capacitor across the input and also added separate grounding for both the steppers and all the DC signal side.

I still get the noise

25

General Mach Discussion / Re: Can't get G31 to work

« on: October 04, 2012, 07:13:24 PM »

Will try.
What if it is noise?
Probe uses shielded wire with shield connected to 0v. Shouldn't this prevent noise?

26

General Mach Discussion / Can't get G31 to work

« on: October 04, 2012, 06:54:29 PM »

I've been trying to test a tool zeroing script and got stuck with G31 command.

For debugging purposes I went to MDI screen and tried the command there and it works funny.
I enter for example G31X10F50 and each time I execute this same command (I tried a hundred times) either X does not move at all or it moves some random length like 0.0125mm, 0.0062, etc.

If I try G0 commands it works perfectly. Same thing on Y axis.

I also suspected that there could be a problem with the probe (I made it myself) receiving 'noise' and giving false signals, so I created a brain that presses the RESET button when the probe signal goes active and this never happens (no reset at all).

Any clues?? What am I missing???

27

General Mach Discussion / Re: Want to update DROs from encoder input in manual mode

« on: September 24, 2012, 10:49:07 PM »

Thanks a lot!!

28

General Mach Discussion / Re: Want to update DROs from encoder input in manual mode

« on: September 24, 2012, 09:37:58 PM »

Great!
Thanks!

One more thing.
How do I update the DROs back and forth when switching from the Main to the 'Manual mode' Screen?

29

General Mach Discussion / Re: Want to update DROs from encoder input in manual mode

« on: September 24, 2012, 08:45:07 PM »

I want to add that I do get the input from the encoders on the Settings page, although I would like to update the DROs on the main page while in manual mode.

30

General Mach Discussion / Want to update DROs from encoder input in manual mode

« on: September 24, 2012, 08:42:21 PM »

Hi everyone.

I installed ball screws and stepper motors to control XYZ axis in a milling machine. I also installed rotary ecoders on each axis.

The idea is to be able to use the machine in manual mode (moving the axis using the handles and not the steppers) and have Mach to show the actual table position on the DROs.

I've searched the forum and found a lot of people that wanted to do this, but I still couldn't figure it out.

Please help. Thanks a lot.