Idea regarding homing for selfbuild CNC

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20 Mar 2010 19:52 - 20 Mar 2010 19:53 #2390 by daniel79
Hi!

first a question:

I tried the different GUI for EMC2 and in one GUI homing was done for all axes the same time. Is this possible in axis too?

second an idea for selfbuild CNC Mills like i have:

Is it possible to diplay the homing difference between two homing processes:

The idea is:

1. homing
2. running a projekt
3. homing again and if theres a difference there will be a window with the differences inside so that i can see that i have to fix/change my DIY mill

Greets
Daniel
Last edit: 20 Mar 2010 19:53 by daniel79.

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21 Mar 2010 11:04 #2394 by BigJohnT
Daniel,

In Axis you have to specify the home sequence in the ini file.

www.linuxcnc.org/docview/html//config_ini_config.html#sub:[AXIS]-section

John

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21 Mar 2010 19:20 #2402 by daniel79
Hi John!

I think this is i have to look for:

HOME_SEQUENCE = <n>
Used to define the "Home All" sequence. <n> starts at 0 and no numbers may be skipped. If left out or set to -1 the joint will not be homed by the "Home All" function. More than one axis can be homed at the same time.

right?

What would be the value I need for homing all 3 axis the same time?

And has anybody an idea to my second question, idea. Any way to see the difference when homing?

Greets
Daniel

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22 Mar 2010 12:45 #2409 by BigJohnT
You just set them all to 0.

John

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22 Mar 2010 13:17 #2411 by daniel79
Ok
Thanks!
I will try this evening.

Greets
Daniel

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05 May 2010 21:10 #2807 by daniel79
Hi!

Sorry for my late reply! I had a lot of work the last weeks.

Homing at the same time works perfect! Thanks John!

But what about my second idea? Is it possible to read somewhere if there was a difference between the estimated and the real homing-point?

Greets
Daniel

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07 May 2010 11:18 #2816 by andypugh
daniel79 wrote:
But what about my second idea? Is it possible to read somewhere if there was a difference between the estimated and the real homing-point?
[/quote]

It was proposed on the mailing list, and there was some discussion.
I found a way to do it in HAL using existing functions.

thread.gmane.org/gmane.linux.distributio...er/20074/focus=20086

Chris Radek has added a hal pin that reports the homing error to the latest 2.5~pre build.
git.linuxcnc.org/gitweb?p=emc2.git;a=com...fd6cbf6f4c254aabe1e7

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