Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: MIDDEN1 on March 17, 2011, 02:34:18 PM

Title: X AXIS STOPS APROX .500 SHORT OF HOME SWITCH
Post by: MIDDEN1 on March 17, 2011, 02:34:18 PM

using mach3
X AXIS STOPS APROX .500 SHORT OF HOME SWITCH
 y and z axis work fine they hit home switch and back off switch a small amount every time

i tried wires from y and z same problem

any ideas

Title: Re: X AXIS STOPS APROX .500 SHORT OF HOME SWITCH
Post by: Hood on March 17, 2011, 04:21:18 PM

If you attach your xml I will see if I can find a config problem. Do you get a reset when this happens?
Hood

Title: Re: X AXIS HOME SWITCH TRIPS EMERGENCY STOP
Post by: MIDDEN1 on March 18, 2011, 02:15:32 PM

i fixed that problem the active low on x++ was on i turned it off and now it goes to home switch and stops but does not back off switch and it trips emergency stop

i checked the diagnostics and when tripping switch the home and x++ light up yellow but also shows emergency stop in red

y and z do not show emergency stop

Title: Re: X AXIS STOPS APROX .500 SHORT OF HOME SWITCH
Post by: Hood on March 18, 2011, 06:34:22 PM

Sounds like your switch may not be a positive action and it is bouncing thus Mach thinks it has backed off and then its seen again and by this time its seen as a limit because homing has finished. To see if this is the case if you home and see the the X DRO zero (machine coords) then that is the problem. Setting a debounce interval may help hide the problem.
Hood

Title: Re: X AXIS STOPS APROX .500 SHORT OF HOME SWITCH
Post by: MIDDEN1 on March 23, 2011, 02:12:03 PM

i tried that and it did not go to zero i ended up moving wire from input 1 to input 4 on mach3 breakout board  and it now works ok.
thanks for input