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Author Topic: Homing and <goto zero> issues  (Read 15408 times)

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Offline ger21

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Re: Homing and <goto zero> issues
« Reply #10 on: July 09, 2011, 09:57:51 AM »
You could probably check the reverse column for one motor, and home both the same direction. Probably several different ways of doing it.
Gerry

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JointCAM Dovetail and Box Joint software
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Offline Red

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Re: Homing and <goto zero> issues
« Reply #11 on: July 10, 2011, 02:41:39 AM »
Ger21
You're right.  I have to take back my last post.  You were right the first time.
Somewhere along the line I reversed the A motor.
When I connected both the X and the A to gearing  I had the horrible grinding during jogging.
I corrected this by getting the motors configured so A was reverse of X and then jogging was fine.
I set up homing negative for both X and A, as you said previously.
I checked motor tuning: My A motor tuning was considerably different from X,
I copied and pasted the X motor tuning settings for steps, speed and acceleration to A and homing is now working smoothly.

So, I assume that Mach 3 will send the same step and Dir commands to the motor and its slave during normal operation  but this is not the case during homing? (i.e. homing is not slaved?)

Offline ger21

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Re: Homing and <goto zero> issues
« Reply #12 on: July 10, 2011, 06:47:56 AM »
Homing is not slave if you have separate switches. I somehow had different homing speeds setup once, and it took me a while to figure out what was going on. ;)

If you want to use one home switch with a slaved axis, there's an option in General Config, "Home Slave with Master", which will slave them during homing.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline Red

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Re: Homing and <goto zero> issues
« Reply #13 on: July 12, 2011, 09:20:03 PM »
Homing is not slave if you have separate switches. I somehow had different homing speeds setup once, and it took me a while to figure out what was going on. ;)
I don't feel quite so silly now

Quote
If you want to use one home switch with a slaved axis, there's an option in General Config, "Home Slave with Master", which will slave them during homing.

That's useful to know.  I had not seen that option

Offline Red

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Re: Homing and <goto zero> issues
« Reply #14 on: March 01, 2012, 11:23:06 PM »
Quote
If you want to use one home switch with a slaved axis, there's an option in General Config, "Home Slave with Master", which will slave them during homing.
Is this what the 3 axis version of the 2010 screenset does?

Offline ger21

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Re: Homing and <goto zero> issues
« Reply #15 on: March 02, 2012, 12:15:46 PM »
The Screenset doesn't really have anything to do with homing. You just modify the homing script to do what you want. I use the 3 axis screen with slaved X axis, and each axis has it's own switch. Even though the screen only display 3 axis of coordinates, you can still control 6 axis and use as many switches as you want.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Homing and <goto zero> issues
« Reply #16 on: August 31, 2012, 08:42:01 AM »
Hi all,
I am relativley new to cnc I have installed the 2010 screenset and think its awsome, the auto zero functin is great, I am installing a lazer crosshair and have altered the M890 macro and all works fine but I thought that it would be even better if that macro moved the X & Y to the zero possition (crosshair possition) can someone suggest the additional line for the macro to do this

Offline ger21

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Re: Homing and <goto zero> issues
« Reply #17 on: August 31, 2012, 11:35:41 AM »
Code "G0 X0 Y0"
While IsMoving()
Wend
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Homing and <goto zero> issues
« Reply #18 on: August 31, 2012, 02:12:40 PM »
 >:DGeee whiz thats a quick reply i am trying it right now many thanks