4 linear scales on router with Acorn6 ?

[suntravel]

While constructing a precision router with software paired Y, I have a question if it is possible to use scales on both y axis for closed loop?

Uwe

[CNCMaryland]

I believe there is a planned add on board for the acorn 6 that will allow 3 more scales for a total of 6.

[suntravel]

I believe there is a planned add on board for the acorn 6 that will allow 3 more scales for a total of 6.

I know the Encoder Expansion is in the shop, a total of 9 with it.

https://shopcentroidcnc.com/shop/cnc-ac ... nsion-kit/

But my question was will a scale work with a soft paired Y axis and will it work with auto square...

Uwe

[centroid467]

I believe there is a planned add on board for the acorn 6 that will allow 3 more scales for a total of 6.

We do have an encoder expansion board for ACORN6 that adds 6 encoder ports. It works well with scales and all.

I do not know if we have support for multiple scales on software paired axes. I'll see if I can find someone that does know.

[centroid467]

We do not currently support using multiple scales for paired axes and I am unaware of any plans to implement that. I did a little testing with ACORN6/ENCEXP12 and a single scale on a software paired Y a while back and it should work well enough.

[vw_chuck]

SO what is the point of all the encoder inputs if you aren't planning on using them to their full potential??? Makes no sense.

[suntravel]

We do not currently support using multiple scales for paired axes and I am unaware of any plans to implement that. I did a little testing with ACORN6/ENCEXP12 and a single scale on a software paired Y a while back and it should work well enough.

Thanks, not what I was hoping for, but it saves me the cost for one scale and the expansion board

But to make sure, screw compensation will work on the paired axis?

Uwe

[eng199]

Multiple screws on the same axis can not be independently compensated.

[suntravel]

Multiple screws on the same axis can not be independently compensated.

ok, then I have to select two screws with as little pitch deviation as possible, or use the new volumetric compensation to get the toolpath in Y exactly square to X...

Uwe