Does cura have a gcode placeholder similar to [current_position_z] in simplify3d?

[drvertigo 0]

Cura has many useful placeholders/paramaters/tokens one can use in Gcode. An example list is here:

https://ultimaker.com/en/community/16281-curas-list-of-tokens-keywords

I am seeking a placeholder that represents "The current position of the Z axis". The corresponding placeholder in Simplify3d is [current_position_z].

I need for toolchange code. My printer has a z_offset between the nozzles, so when switching to the second nozzle, I wish to ToolChange as follows:

M206 Z-2.0 ; move the Z origin by 2mm

G0 Z[current_z_position] ;lower the build plate by 2mm

M280 P0 S180 ; Lower the second nozzle via a servo motor.

What is the equivilent of [current_z_position] in cura?

[DaHai8 68]

I don't know if Cura has that placeholder, but I think you can accomplish the same thing by switching to Relative Positioning:

http://reprap.org/wiki/G-code#G91:_Set_to_Relative_Positioning

Then make the Relative Moves and then moving everything back to where it was (relative), then switching back to Absolute Positioning:

http://reprap.org/wiki/G-code#G90:_Set_to_Absolute_Positioning

P.S. Ugh, nevermind. I don't think that's what you're looking for ...

Edited May 30, 2017 by Guest

[ultiarjan 1,141]

you don't share what printer you use, but if you would use an Ultimaker2, you could have a look at the Mark2 firmware and have the firmware handle the Z-offset for you.

https://magnetic-tool-changer.com/