M code kunundroms

Im hoping some one can shed some light on some user M codes.Ive have written some simple scripts for advancing and retracting a parts catcher using M124 and M125.Both work in MDI and should in auto..

Problem: I would also like to open and close the collet via m code in the part program,but I have the output pins tied to a pin in a hal comp that allows me to open and close the collet in maual mode with a push button,Is there any way to have it both ways?

Id imagine additional user mcode pins could be added to the source code,any one ever pull this off?Thanks as always.

You can use a custom M command to change the pin state with halui.
For example...

M104
#!/bin/bash
#change pin state to TRUE
halcmd setp and2.1.in1 TRUE
exit 0

Have you looked here...
www.linuxcnc.org/docview/html/gcode/m-co...tml#sec:M100-to-M199

Rick G

Some clarity is in order....My set up uses a 5i20 and opto 22 pb24 racks.I have a comp written for all of my button functions called button logic and and they are connected to gpio pins like so

net sl_collet_open buttonlogic .0.sl-collet-open = hmi,gpio.056.out

or something like this,I dont have my hal file in front me right now....

My collet buttons only work in manual mode,they cannot be activated in Mdi or auto and my comps have error messages,not that they are fool proof,they are a work in progress.

I have shell scripts like so

#! /bin/bash

# M124 open the parts catcher

halcmd setp hmi gpio.055.out true

end ----or what ever, again Im not at the machine.
This works for advancing my parts catcher ,as the gpio pin isnt assigned a signal name.


If I try this

#! /bin/bash

halcmd sets sl_collet_open true
or
halcmd setp hmi,gpio.056.out true

I get no output,and this makes sense as according to the manual,an output pin cant have a signal attached to it.

So,I have considered trying to "or" them together in hal although I prefer logic in comp files and Im not sure it will work.It is next.thanks for the example.

As for creating a user pin in the source,There are a bunch of unused common M codes,M21-M40 that if there was some code that basically said "when I see M31 in a g code file,I will execute the code that M31 points to",it could be a comp or userspace thing.

I would like to see some sort of executeable Mcode file that can be attached to a thread that has free Mcodes available to be defined for whatever funtions,they would interact with hal just as a comp does.

maybe like this
component Mcodes

pin in m31
pin in m32
ectc

other comp pins

//m31
code here
{
}

//m32
code here
{
}

I noticed that user mcodes can be written in csh,what are the limitations of importing signals from hal,will it work more like comp?

I appreciate everyones help,I look at things different.....

Kinda brings us back to where we started.
You can use a button and a M1xx to effect the pin change.

Using hal you could use an OR

If button is pressed it changes the input 1 of the OR

or

M1xx changes the other OR input

either case the change is effected and the OR output pin changes.


The output to the Or connects to the collect changer pin.

Rick G

Time finally allowed me to get back to the lathe in the shop.It turned out the best way to do this was to create a signal and import it into a comp and manipulate the i/o from there.Thanks to Andy for the suggestion.For those interested,i did it like so

This is my comp code,I have to add a section so the collet cant be opened while the spindle is running

//collet open button///

if((pb_open_col)==1&&(ls_collet_closed)==1&&(manual_mode)==1)
{
sl_col_close=0;
sl_col_open=1;
}
else
if((pb_close_col)==1&&(ls_collet_closed)==0&&(manual_mode)==1)
{
sl_col_open=0;
sl_col_close=1;
}

//collet mcodes//

if((mc_colopen)==1&&(ls_collet_closed)==1&&((auto_mode)==1||(mdi_mode)==1))
{
sl_col_close=0;
sl_col_open=1;
}
else
if((mc_colclose)==1&&(ls_collet_closed)==0&&((auto_mode)==1||(mdi_mode)==1))
{
sl_col_open=0;
sl_col_close=1;
}
Script that gets called from MDI or Auto mode

#!/bin/sh

# M121 open collet
halcmd sets mc_colclose false
halcmd sets mc_colopen true
halcmd sets mc_colopen false
exit 0


Signals created in hal

#net mc_colopen buttonlogic.0.mc-colopen #collet open mcode
#net mc_colclose buttonlogic.0.mc-colclose #collet close mcode

Close the collet

#!/bin/sh

# M122 close collet
halcmd sets mc_colopen false
halcmd sets mc_colclose true
halcmd sets mc_colclose false
exit 0


Ive also been playing with the Axis interface,Im still learning the TK/TCL part along with the python.I wanted to have all tabs similar to the way a Fanuc has soft keys,a work in
progress...