ok...

but,  if I  turn the  lathe an computer off..   then restart them   and want to home the lathe..  it wouldn't know how to do that unless it hit a limit switch?




On 11/6/20 8:03 PM, Jon Elson wrote:
On 11/06/2020 07:33 PM, R C wrote:
I noticed I can (in stepconf,  which I shouldn't use of course...)


That I can use the limit switches as 'home'  for an axis only.


Unless I am understanding this wrong,  I figured  an axis would travel there  and when it hits it thinks "I am home"  ?


There are a couple things you have to do to the .INI file tomake a shared home/limit work.  First, you have to set HOME_IGNORE_LIMITS = YES in each axis section.  Then, you have to set the HOME_OFFSET to a value that makes the axis back away from the switch enough so that it is not tripped when it gets to the offset position.  This allows the axis to ignore the limit switch DURING the home sequence, and leave the axis such that the switch is not tripped when it arrives at the home position.

Once the axis is homed, you can then jog around manually and observe the machine coordinates when at the extent you want to set as the soft limit range, and enter these values into the .INI file for
MIN_LIMIT and MAX_LIMIT to set your desired soft limits.

Jon


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