Messages

1

General Mach Discussion / Re: Need Help, Please. Homing issue

« on: April 12, 2020, 09:49:51 PM »

LOL... Yes I get you!
However, I'm talking at the Diagnostics screen.  You should be able to push all of the limit switches on the screen without it tripping an E-stop type of action.  I think I may have a wiring issue.  Going to dig out my multimeter and check things out.

2

General Mach Discussion / Re: Need Help, Please. Homing issue

« on: April 11, 2020, 09:18:54 AM »

Hi David,

Thanks for the reply.

So I'm getting weird behavior at the Diagnostics screen. 
When I touch my touch-off plate to the bit in the spindle it lights up the "Digitize" box, and the "M3 Home" box.
When I push the limit switch for the X axis, the M1 Home box lights up. Nothing else.
But when I push either the Y or the A limit switches, they trip the system, and I have to Reset.
The Y switch lights up the M2 ++Limit box, and the M2Home box.
The A switch lights up the M4 ++Limit box, and the M4Home box

From memory, manually pushing these switches in the past never tripped the system where I had to Reset.

Thanks.

3

General Mach Discussion / Need Help, Please. Homing issue

« on: April 10, 2020, 05:17:08 PM »

Hi all,

I've been running Mach 3 for better than 10 years on my CNC, which has a CNC4PC C23 BOB with USB Smooth Stepper.
I've not run the machine in many months, but today I decided to fire it up and do a little trouble shooting.
The machine uses two motors to drive the gantry, with Y being the primary axis and A set up as the slave axis.
There are home limit switches on both ends of the gantry, at the Y and A.

I went to the Diagnostics screen to home the machine axes.
I first want to set the homing on the X axis, hit the Ref X button, and that went smoothly.

Then, I hit the button Ref Y button...
I knew that the gantry was a little bit racked, so was expecting the gantry to move forward, hit the Y limit switch, and then continue moving the A side.  What happened was, the Y switch did trigger as expected, but A side stopped.  Then, the Y continued to drive forward until the machined indicated that the limit switch went off.   Broke the limit switch.
I replaced the switch, same results.

Any thoughts?

Thanks.