nanoDLP

color

Member

From: Bulgaria

Registered: 2016-03-19

Posts: 84

Question about G code - Start of print

Hello,
I have done settings of my Start of print section to ignore the initial M650 movement. After upgrade to the latest version 1165 it seems impossible - is this hardcoded? How to prevent moving up of the build platform before very first layer?

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,546

Re: Question about G code - Start of print

Nothing hard-coded for RAMPS, for direct control having limit cause auto calibration on power on.

color

Member

From: Bulgaria

Registered: 2016-03-19

Posts: 84

Re: Question about G code - Start of print

My settings for the "start of print" are :

G90
M650
D0.1 S3 R1
G90
[[PositionSet 0]]

But actually the Z is lift up about 3mm instead of 0.1mm
Why?

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,546

Re: Question about G code - Start of print

With G90 you put your RAMPS into absolute mode with D0.1 (By the way I do not know details about D series code) you ask it to move to 0.1 position.

color

Member

From: Bulgaria

Registered: 2016-03-19

Posts: 84

Re: Question about G code - Start of print

Ok, thanks, I figured out how to proceed. D variable is lift distance and I used a math function to set it zero for the first layer. Now everything works perfect.