Unresolved Z offset with M565 not working

So i've been using M565 z-.85 to set my z offset in simplify for a few weeks now with no issues and all of a sudden now when i start a print it's like it just ignores that and moves my hotend right down to the base after it auto levels. I have no idea what i changed or why it's not reading it. I tried to start all over in simplify but cannot figure out what is going on. I have G28, G29, and then M565 z-.85. I tried changing the order around and putting the M565 after the G28 but nothing is working. Anyone have suggestions?

 

After failing multiple times i reflashed the firmware to see if that would fix anything but it's still doing the same thing. That's pretty much what my startup G-code is in the scripts section. I will post it later today but right now i have no clue what i'm doing wrong.

I need to figure out how to have 2 separate printers in Simplify so i can adjust each one independently. I think that's where my problem started because the last time i printed with my other printer i had no problems adjusting the Z offset with M565. Now that i switch back to my other printer it's just not working.

 

I reflashed the same firmware that i was using successfully but i will check later today and see which one it is. The G28 and G29 seem to be working fine. It will Home all axis then auto level but after that it just moves down to Z0 and tries to print from there.

 

Also double check and make sure you didn't do something silly like accidentally set the first layer setting to 0% or some small % of the total layer thickness.

 

I will check the generated Gcode when i get off work. Good idea on the layer thickness i'll go back through my settings and see if i accidentally changed one. But from what i could see everything was the way it's always been.

 

Here is my start up gcode. Looks like i have my layer settings all correct


G90
M82
M106 S51
M140 S0
M104 S243 T0
M109 S243 T0
G28 ; home all axes
G1 Z5 F5000 ; lift nozzle
G29;
G1 Z5 F5000 ; lift nozzle
M565 G-.85;
G92 E0
G1 E-1.0000 F1800
G1 Z0.450 F1002
; layer 1, Z = 0.45
T0
; tool H0.450 W0.720

I'm printing 2 processes so that the top 1" of my part is solid, I'm wondering if i need to delete the start up gcode out of the second process.

 

well i'm not sure what i did but i got it working. I changed the profile of the printer and messed around with that. I need to figure out how to set up different profiles for my 2 printers tho.

Thanks for all the help! 15hr+ print job i really needed to get done.

 

Just out of the blue my robo also started ignoring the M565 command, I ended up switching to using G92 appears to be working.

 

I didn't, I'm still running some old flavor of Marlin RC2 from 2014 or something. Just because it works.

 

Here is the problem, that G should be a Z.

 

This happens when you don't shut simplfy3d properly. When ever I turn off the computer with out shutting simplfy3d down it corrupts the program and wont use the start code. I uninstall and reinstall and the problem is solved. you can always force the z offset in the settings under global g code offsets.