This is a copy of a post I made on the SmoothSyepper site.

I think there are more users on this forum.  Perhaps we can get this fixed if a few users post what results they are getting with SS slaved axis homing.

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OK I have been doing some testing and have discovered something interesting.

Here I an talking about the X axis which has A slaved with it. Both X and A have their own home switch. Gantry gets "auto squared". For now I will disregard Y and Z.

When using the LPT,

DoOEMButton(1022) 'ref X
Only the X side gets homed. A just moves in unison. Gantry does not get squared.

RefCombination(9) 'ref X and A
Both X and A get homed. They both do it in unison. Gantry is squared.

DoOEMButton(1022) 'ref X
DoOEMButton(1025) 'ref A
X homes with A following along. Then A homes on it's own while X stays still. Gantry is squared.


Now with the SS here is what I discovered.

DoOEMButton(1022)'ref X
DoOEMButton(1025)'ref A
X homes with A following along. Then A homes on it's own while X stays still. Gantry is squared.

However this leaves Mach in a hung state. Manual jog will work. MDI will not work. Gcode will not work. Pressing "Stop" or "Reset" gets things free again.

RefCombination(9) 'ref X and A
X homes with A following along. Then A homes on it's own while X stays still. Gantry is squared.

Notice this is different to LPT. Mach is hung same as above.


DoOEMButton(1022)'ref X
This is the interesting part.

Even though this only calls X to be referenced, X homes with A following along. Then A homes on it's own while X stays still. Gantry is squared.

Notice the difference? The SS is somehow taking over the homing routine and deciding both X and A need homing even though only X has been called.

The LPT does not do this.

Greg

Mach R3.041  and Plugin v015ogb

Hi Greg,

the SS has some problems with homing more than axis simultaniously.
So you couldnt use the "RefCombination()" function with the SS.

Best regards,

Wolfram

To add to my post above,

I was using Mach R3.041  and Plugin v015ogb

I now updated Mach to R3.042.020  Same Plugin  v015ogb.

Everything is the same as above except,

Using SS
RefCombination(9) 'ref X and A
Acts the same as reported above but no longer makes Mach hang.

Greg

I am using a SS with a gantry that has the A axis slaved to Y. If I ref all home, everything normally work fine. However, every now and then the A-axis will keep running while it is backing away fromthe A-limit switch. I have to hit e-stop. I finally figured out that this happens if the ganrty is racked such tha the A-limit is hit before the Y-limit.