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General Mach Discussion / Homing sometimes stops before hitting home switch.
« on: April 21, 2024, 09:31:51 PM »
I need help in solving issue I'm having in homing my milling machine. I have Mach3 version R3.043.066, with MachStdMill version 2.3.6.
I have a ESS with CNC4PC C25 board. I've hooked up an oscilloscope to look at the inputs, thinking it could be noise and after adding in debouncing and I've determined that there isn't any noise in the wiring. I'm using shielded wire to each home switch and each home switch has its own input. Shielding is only connected at the C25 card and not on the machine.
The problem.
1) Hit Ref All in Mach3.
2) Z axis goes up towards z limit switch. Not every time but most times it hits the switch and backs off like its supposed to. But few instances it stops just short of the limit switch. Mach3 then goes on to the y-axis.
3) y-axis just like the z-axis will start homing and not every time will it hit the y-axis home switch. Get the same behavior. If it does activate the switch, it stops then backs off. But if the switch isn't activated it stops just short of switch, then starts to home X.
4) x-axis acts the same as the z and y axis.
Funny thing is the behavior is the same for all three axis and its not as if the axis stops at some random location. Its always just short of activating the limit switch.
I'm at my wits end on getting this figured out. Any help would be appreciated.
Dave
I have a ESS with CNC4PC C25 board. I've hooked up an oscilloscope to look at the inputs, thinking it could be noise and after adding in debouncing and I've determined that there isn't any noise in the wiring. I'm using shielded wire to each home switch and each home switch has its own input. Shielding is only connected at the C25 card and not on the machine.
The problem.
1) Hit Ref All in Mach3.
2) Z axis goes up towards z limit switch. Not every time but most times it hits the switch and backs off like its supposed to. But few instances it stops just short of the limit switch. Mach3 then goes on to the y-axis.
3) y-axis just like the z-axis will start homing and not every time will it hit the y-axis home switch. Get the same behavior. If it does activate the switch, it stops then backs off. But if the switch isn't activated it stops just short of switch, then starts to home X.
4) x-axis acts the same as the z and y axis.
Funny thing is the behavior is the same for all three axis and its not as if the axis stops at some random location. Its always just short of activating the limit switch.
I'm at my wits end on getting this figured out. Any help would be appreciated.
Dave