disable home button while running

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13 Apr 2011 15:33 #8836 by piasdom
hi,
i now have a home button in axis. i would like to disable it while the program
is running. in case i click it by accident and stop everything. is this possible or is
a new build/compile for emc required ?
Thanks

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13 Apr 2011 16:01 #8838 by BigJohnT
I'm pretty sure EMC will not try and home when a program is running. You should try and see when running a safe program.

If not then you want to "and" the button and halui is in manual pins to your halui home pin. To do this you use the and2 component.

www.linuxcnc.org/docview/html/man/man9/and2.9.html

The and2 component takes two inputs and has one output. If both inputs are on the output is on. So one input is your button and one is the halui is in manual pin (don't know the exact name).

John

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13 Apr 2011 16:10 #8839 by piasdom
i know it would not home,it just stops everything with estop error.

but this is not in the xml file?
have no idea where to use loadrt and2.
Thanks

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13 Apr 2011 16:17 #8840 by BigJohnT
The xml file only creates the pyvcp things. The and2 is a HAL component so it will be in your .hal file.

Look in your .hal file to see if you all ready have a loadrt and2 line. If not you can in your postgui.hal and add the and2 and don't forget to add it to your servo-thread with addf. The reason you do it there is you are connecting to the pyvcp button so you have to wait for it to load.

So get the and2 part added first and make sure that works...

John

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13 Apr 2011 16:21 - 13 Apr 2011 16:30 #8841 by piasdom
i'll work on the.
but you said servo-thread, i have steppers. does that change where i put that stuff ?

and i looked in the hal file, no and2
Last edit: 13 Apr 2011 16:30 by piasdom. Reason: looked

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13 Apr 2011 17:15 #8843 by BigJohnT
You should have two threads the base-thread and the servo-thread. I have no idea why they are named that. The base-thread is the fast one used to generate steps and the servo-thread is a one that runs about 1/4 as fast as the base-thread. The servo-thread is the one you normally use for things like this.

It doesn't matter what kind of machine you have hal commands go in one of the hal files and pyvcp stuff goes in the xml file.

John

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13 Apr 2011 17:50 - 13 Apr 2011 17:57 #8846 by piasdom
should i be in the axis.hal file or the custom_postgui.hal?
i added add2 to axis.hal and emc starts. when i try to add the addf in the axis.hal, it ask for another name. it says
it has only one. i assume it's the pins name it looking for ?
Last edit: 13 Apr 2011 17:57 by piasdom.

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13 Apr 2011 18:23 #8850 by BigJohnT
You can load and add the and2 in either hal file. Only the connections to any pyvcp component MUST be done in the postgui hal file.

What is your addf line?

John

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13 Apr 2011 18:27 - 13 Apr 2011 18:50 #8853 by piasdom
in the custom_postgui.hal file
loadrt and2 (it shows up in the hal configuration)

in the xml
and2.halui.joint.0.home.in0 bit in
and2.halui.mode.manual.in1 bit in
and2.halui.program.is-running.out bit out

in the xml, what do i add. <halpin>"and2"</halpin> ?

still didn't do the addf
what is "N" in addf and2.n.name
Last edit: 13 Apr 2011 18:50 by piasdom.

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13 Apr 2011 18:53 #8857 by piasdom
have this in hal
addf and2 servo-thread

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