limit switch as home switches

[eloid]

can some please post a how too..note to configure /
to emulate home switches... i think i have a bad one
and replace it yet.. what required for software setup?

[Bubba]

What controller/BOB setup????

[jalessi]

Eloid,

See the attached .jpg

Change the status to green for the desired axis.

Jeff...

[ger21]

I don't think you want to emulate them. You just want to assign them to the same pin. If your X- limit will be your home switch, just set them both to the same pin.

See 5.3.3 for emulated inputs.
http://www.machsupport.com/docs/Mach...all_Config.pdf

[jalessi]

Gerry,

He may have existing switches wired in series, if so he may need to emulate it or jumper it out.

Jeff...

[eloid]

the bob is cnc4pc c23
all the limit switchs are in series
had seperate home switch wired for each axis.
orginally i thought it was a switch bouce issue

I have since replaced the switch and still get the same problem
what i am finding is the when Y home switch is depress by machine or hand
the home 2 led will flicker on diagnostic page in mach... like is debounceing
even when u depress the switch fully by hand and hold it... this lead me to think its not a switch bounce problem.... I dont think its the switch, I checked the solding to micro switch it ok, checked all the leads and quick connectors between machine and bob.... even resliced them.... everthing beeps when cable stressed?

[eloid]

my machine is a fix gantery type y axis moving table. I Had this
question to ask...
In mach i get yellow abnormal condition button flashing....
it notes axis are not refed to normal condtion.

im thinking this cus the way....the limit and direction of movingment is set up for the y axis for the moving table?

[jalessi]

Eloid,

Check for cold solder joints on the breakout board.

We have had a few boards with bad solder joints.

Look at the board under magnification.

Jeff...

[eloid]

will do that .... need to remove all those wires again

[eloid]

hoping someone can shed some light on this other problem i have with my limits and homeing set up mach....

below is a very simple top down drawing of my fix gantery cnc,
when load g code i would like the cross hairs to appear as in my drawing
and want the x,yx 0,0,0 to be located as per the drawing

I guess i need some help setting up the soft min, max values to display
as per the drawing.

[ger21]

If you want your 0,0 to be upper right, then all your X and Y moves need to be negative coordinates. Your mins would be -18 and -15.75, and the max would be 0.

[eloid]

Originally Posted by ger21 If you want your 0,0 to be upper right, then all your X and Y moves need to be negative coordinates. Your mins would be -18 and -15.75, and the max would be 0.

thanks ger21

Check for cold solder joints on the breakout board.

We have had a few boards with bad solder joints.

Look at the board under magnification.

as of now emulating the home switch....untill i worked out all other bugs will look into that tip....thanks jalessi