explicit settings for 4 axis xyuv ,please

Start with stepconf and create an XYZA configuration to start with, using the pin assignments and timings from that document.

You will then need to edit the HAL and INI files by hand to make an XYUV machine. These will be found in ~/emc/configs/

Start with the INI file. You will need to define 8 axes (unfortunately). Simply copy and paste the [AXIS_0] to [AXIS_3] sections and rename to [AXIS_5] to [AXIS_7]

Set COORDINATES to XYUV

In the HAL file you will then need to change all axis.2…… occurrences to axis.6 and axis.3 to axis.7. That should be enough.

In future versions of EMC2 it will be possible to have only 4 motors and 4 axes, but at the moment EMC2 assumes that you have Z, A, B and C if you have U.

Start emc2 by typing emc at the command line rather than using the icons, that way you will see a lot more debug information. I doubt it will work first time, to feel free to paste error lists and dmesg output to www.pastebin.com or www.pastebin.ca so we can tell you what is wrong.

By the way, we have several other users (and one developer) in Romania.
www.linuxcnc.org/component/option,com_go...t/Itemid,19/lang,en/

Is that the dmesg output? It seems unusually unhelpful.

I think I see it, you only have 4 stepgens and 8 axes.

As it happens, you only need (or want) 4 stepgens, as running extra ones wastes CPU
change the HAL file so that
stepgen.0 == axis.0
stepgen.1 == axis.1
stepgen.2 == axis.6
stepgen.3 == axis.7

Also, I forgot than in the INI file you need [TRAJ] AXES = 8