motors mapping with Duet Expansion Breakout Board

[JV]

Hi Guys

I'm working with a duet2 ethernet and i connect an external drivers for the axis X,Y & Z axis (cartesian) using an Duet Expansion Breakout Board and my two extruders are working with the two drivers in the board E0 and E1.

I would to connect two steppers motors (U,V axis) to the X and Y drivers present in the board, but i don't know how to mapping the motors in the RRF.

Actually my configuration in the RRF is:

M584 X5 Y6 Z7 E3:4 ; Apply custom drive mapping

If i put the next line in the RRF should it work ok?

M584 X5 Y6 Z7 E3:4 U0 V1 ; Apply custom drive mapping

Thanks for your help guys.

[Veti]

yes.
you will need to create homing files for them i.e. homeu.g

[JV]

@veti
i don't need to homing this axis, because they doesn't works like real axis, they just have to move in relative mode with a macro.
should i do homing anyway?

[Veti]

well you need to configure the parameters for the additional axis
motor current (M906)
steps/mm (M92)
acceleration (M201)
maximum speed (M203)
jerk (M566)
axis limits(M208)
endstop type and position M574 (M574)

how would you know the position of the axis without homing?

[JV]

@veti
for the application that i should do i don't need to know the position, they are not real axis, they must make a number of revolutions established in a macro.
Thank you for your help

[Veti]

@veti said in motors mapping with Duet Expansion Breakout Board:

motor current (M906)
steps/mm (M92)
acceleration (M201)
maximum speed (M203)
jerk (M566)

you will still need to configure these regardless

[dc42]

@jv said in motors mapping with Duet Expansion Breakout Board:

@veti
i don't need to homing this axis, because they doesn't works like real axis, they just have to move in relative mode with a macro.
should i do homing anyway?

In that case you can just include G92 U0 V0 in homeall.g so that RRF considers that they have been homed.

[JV]

@dc42
Perfect David Thanks