X axis started homing in the wrong direction

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carbuthn
Posts: 199
Joined: Tue Jan 15, 2019 11:40 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

X axis started homing in the wrong direction

Post by carbuthn »

I have an issue with the homing of the X axis. I am running CNC12 5.0 Beta Rev 0.

Today I crashed the mill hard when a 3/8" Carbide 3 flute dropped down further than it should (2D Contour, picked the wrong surface). Broke the end mill and rotated the Z axis out of perpendicular to the X axis.

I got the part out removed the shield from around the table. Started to re-tram the head. Could not move X axis, error message said that X zero not set.

De-energized the mill to re-start the Acorn board at which time the Z axis dropped (this has never happened to me before, but I will be installing a break on the Z axis).

Re-started CNC12 as well when went to home the machine Z axis homed, Y axis homed, but the X axis took off in the wrong direction.

Checked the Homing and configuration pages in the wizard and they seem okay.

I will check with the clearpath software in the morning.

Any suggestions? Should I re-install and setup CNC12 5.0? I am not sure were to look in the report or parameters.
Screenshot 2023-04-09 203324.jpg
suntravel
Posts: 1967
Joined: Thu Sep 23, 2021 3:49 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 6433DB0446C1-08115074
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Germany

Re: X axis started homing in the wrong direction

Post by suntravel »

You are sure you saved the Wizard with the screenshot?

N100 ;Check for open home switch
IF !#[50000 + #9822] THEN M225 #100 "HomeAll switch tripped!!!\nPlease clear before Homing.\n\nPress Cycle Cancel to end Homing"
IF !#[50000 + #9822] THEN GOTO 100

;Disable all limits
M94 /101 /102 /103 /104

;Perform Homing commands
M92/Z L1
M26/Z
M92/Y L1
M26/Y
M91/X L1
M26/X

;Enable all limits
M95 /101 /102 /103 /104

In your cncm.hom it is M91 for X, should be M92

Uwe
carbuthn
Posts: 199
Joined: Tue Jan 15, 2019 11:40 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: X axis started homing in the wrong direction

Post by carbuthn »

I will check again, the homing page in the wizard was the first thing that I checked. It shows M92 on that page, I will change to M91, save and then back to M92 and run another report to see if that changes the direction back to the way it was. I did check a report from two days earlier that showed the X axis set to M92, and I had homed the machine an hour or so before I crashed the mill and it moved in the proper direction.

Also had an issue with the Z axis dropping when the Acorn was de-energized. I ordered a brake for the Z axis servo and will double check the coupling is tight. Thanks.
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