Z axis speed at start up?

Ask the MakerGear community for assistance...
Post Reply
User avatar
sthone
Posts: 881
Joined: Tue Jul 08, 2014 8:25 pm
Location: Connecticut
Contact:

Z axis speed at start up?

Post by sthone » Wed Sep 11, 2019 2:59 pm

Is there a way to change the z axis speed at the start of a print?

I'm not sure what I did but this printer been running for years with no issues. I was changing the z height by checking with M500 and then M206 ect. like I've done many a times. I'm not sure if I changed something by mistake but the bed wouldn't go up at the start of a print. I tried many things including reflashing the firmware between the latest and even the original beta version for the Rev E. I finally figured out that the bed was trying to move in the wrong direction literally like the motor was turning the wrong way than it should. (almost like a had Rev D firmware) I ended up turning the plug around at the board and this seemed to fix things. (is it even posiable for the motor to switch (polarity?) like that?)

Anyway the printer works like normal now but it takes 45+ seconds for the bad to get to the top at the start of a print..... so is there a way to speed this up?

Help me Obi-ED Kenobi you're my only hope. :lol: (seriously I think your the only one left here who knows anything any more.)

-Steve
____________________________________________________
See my projects at https://www.theneverendingprojectslist.com

airscapes
Posts: 358
Joined: Wed Jan 31, 2018 11:36 pm

Re: Z axis speed at start up?

Post by airscapes » Wed Sep 11, 2019 3:20 pm

While we wait for Ed, could you have changed something in the slicer/printer profile? I thought there are different location for a printer to home and the M2 is a little different with something being opposite. In the octoprint profile under axes, there is a check box next to Z which is checked and says "Invert Control"

User avatar
sthone
Posts: 881
Joined: Tue Jul 08, 2014 8:25 pm
Location: Connecticut
Contact:

Re: Z axis speed at start up?

Post by sthone » Thu Sep 12, 2019 11:10 pm

I wish it was that easy but I use S3D for a slicer and the files I print is the same g-code I've printed numerous times through octoprint. As for the profile in octoprint it's just the default one and nothing has ever been changed.

-Steve
____________________________________________________
See my projects at https://www.theneverendingprojectslist.com

airscapes
Posts: 358
Joined: Wed Jan 31, 2018 11:36 pm

Re: Z axis speed at start up?

Post by airscapes » Thu Sep 12, 2019 11:51 pm

Well, I feel for you.. I fat fingered the M206 ..and set M205 Z to 12.xx .. that the Z jerk.. Might want to look at G Code and see what M106 M306 M204 etc do.. if you think that is when it got hosed. Also here is the output of the important stuff from M503 on mine see if they are the same.. the M203 Z would be a problem is set really low

Recv: echo:Stored settings retrieved
Recv: echo:Steps per unit:
Recv: echo: M92 X88.88 Y88.88 Z1007.70 E471.50
Recv: echo:Maximum feedrates (mm/s):
Recv: echo: M203 X200.00 Y200.00 Z25.00 E25.00

Recv: echo:Maximum Acceleration (mm/s2):
Recv: echo: M201 X900 Y1000 Z30 E1000
Recv: echo:Acceleration: S=acceleration, T=retract acceleration
Recv: echo: M204 S2000.00 T3000.00
Recv: echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
Recv: echo: M205 S0.00 T0.00 B20000 X4.00 Z0.44 E1.00
Recv: echo:Home offset (mm):
Recv: echo: M206 X0.00 Y0.00 Z12.66

User avatar
sthone
Posts: 881
Joined: Tue Jul 08, 2014 8:25 pm
Location: Connecticut
Contact:

Re: Z axis speed at start up?

Post by sthone » Wed Oct 16, 2019 3:30 am

Thanks airscapes,

I just got back around to looking into this and that's exactly what happened... I fat fingered and changed the M203 to 4.68 instead of the M205. I'm still not sure how to explain the motor reversing but at least everything is working again the way it should.

-Steve
____________________________________________________
See my projects at https://www.theneverendingprojectslist.com

Post Reply