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## Microstep math

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• All y all, Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the
Message 1 of 11 , Mar 31, 2012
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All y'all,

Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?

Thanks! KK
• Hi KK Could be the screws have worn down by 1.4% over the years? Is there backlash? Thanks, Art www.gearotic.com ... From: Phred To:
Message 2 of 11 , Mar 31, 2012
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Hi KK

Could be the screws have worn down by 1.4% over the years? Is there backlash?

Thanks,
Art
www.gearotic.com

----- Original Message -----
From: Phred
To: mach1mach2cnc@yahoogroups.com
Sent: Saturday, March 31, 2012 10:17 AM
Subject: [mach1mach2cnc] Microstep math

All y'all,

Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?

Thanks! KK

[Non-text portions of this message have been removed]
• no backlash, at least not that I can tell, which is weird because I remember having backlash when running the MAXNC software. There is a maybe a .002-.005
Message 3 of 11 , Mar 31, 2012
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no backlash, at least not that I can tell, which is weird because I remember having backlash when running the MAXNC software. There is a maybe a .002-.005 hysteresis which varies, but the dial gage is a cheapy from china, so maybe it is out of whack?

--- In mach1mach2cnc@yahoogroups.com, art2 <fenerty@...> wrote:
>
> Hi KK
>
> Could be the screws have worn down by 1.4% over the years? Is there backlash?
>
>
> Thanks,
> Art
> www.gearotic.com
>
>
>
>
> ----- Original Message -----
> From: Phred
> To: mach1mach2cnc@yahoogroups.com
> Sent: Saturday, March 31, 2012 10:17 AM
> Subject: [mach1mach2cnc] Microstep math
>
>
>
> All y'all,
>
> Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?
>
> Thanks! KK
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
• If the gantry/carriage is not moving freely, i.e., something s not adjusted right or there is binding/racking/etc going on, it might be missing 1.4 % of the
Message 4 of 11 , Mar 31, 2012
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If the gantry/carriage is not moving freely, i.e., something's not adjusted right or there is binding/racking/etc going on, it might be missing 1.4 % of the step pulses.  Does it jog freely?

________________________________
----- Original Message -----

From: Phred
To: mach1mach2cnc@yahoogroups.com
Sent: Saturday, March 31, 2012 10:17 AM
Subject: [mach1mach2cnc] Microstep math

All y'all,

Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?

Thanks! KK

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]
• My math was right then? It jogs very smoothly, ramps up and down under g-code and the motors have 2x more torque than the old ones... I will double check any
Message 5 of 11 , Mar 31, 2012
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My math was right then?

It jogs very smoothly, ramps up and down under g-code and the motors have 2x more torque than the old ones... I will double check any sticking issues by checking the trsvel near the limits, that should also help to see if it is just plain wear and tear on the screws as most of the work I have done has been in the middle of the screws.

--- In mach1mach2cnc@yahoogroups.com, Gary Liming <g_liming@...> wrote:
>
> If the gantry/carriage is not moving freely, i.e., something's not adjusted right or there is binding/racking/etc going on, it might be missing 1.4 % of the step pulses.Â  Does it jog freely?
>
>
>
>
> ________________________________
> ----- Original Message -----
>
> From: Phred
> To: mach1mach2cnc@yahoogroups.com
> Sent: Saturday, March 31, 2012 10:17 AM
> Subject: [mach1mach2cnc] Microstep math
>
> All y'all,
>
> Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?
>
> Thanks! KK
>
> [Non-text portions of this message have been removed]
>
>
>
>
> [Non-text portions of this message have been removed]
>
• KK I just replaced my MAXNC controler and steppers with the Gecko G540 system. For some reason I could not get their config file to load into Mach3. Trying to
Message 6 of 11 , Apr 1 5:03 PM
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KK
I just replaced my MAXNC controler and steppers with the Gecko G540 system. For some reason I could not get their config file to load into Mach3. Trying to get started fast I clicked on the MAx CL mode of the Mach3 config. The motors turn but not well. Could you tell me how you set up your motor outputs/ports and pins page? Any help would be greatly appreciated.

Tony

--- Original Message ---

From: Phred <kaptnknemo@...>
Sent: March 31, 2012 3/31/12
To: mach1mach2cnc@yahoogroups.com
Subject: [mach1mach2cnc] Microstep math

All y'all,

Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?

Thanks! KK
• My max is older than your s and was open loop, so as soon as added the gecko and new motors, it wasn t a maxnc any more. I just picked the 540B profile that
Message 7 of 11 , Apr 1 5:23 PM
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My max is older than your's and was open loop, so as soon as added the gecko and new motors, it wasn't a maxnc any more. I just picked the 540B profile that came with Mach3 and am running with that. I think the CL stands for Closed Loop and Mach3 is looking for some feedback, which the gecko won't give.

--- In mach1mach2cnc@yahoogroups.com, "tonyzavilenski@..." <tonyzavilenski@...> wrote:
>
> KK
> I just replaced my MAXNC controler and steppers with the Gecko G540 system. For some reason I could not get their config file to load into Mach3. Trying to get started fast I clicked on the MAx CL mode of the Mach3 config. The motors turn but not well. Could you tell me how you set up your motor outputs/ports and pins page? Any help would be greatly appreciated.
>
> Tony
>
> --- Original Message ---
>
> From: Phred <kaptnknemo@...>
> Sent: March 31, 2012 3/31/12
> To: mach1mach2cnc@yahoogroups.com
> Subject: [mach1mach2cnc] Microstep math
>
> Â
>
> All y'all,
>
> Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?
>
> Thanks! KK
>
• Hi,   Why would you click the MAx CL mode in Mach3? You are now running a G540 not the MaxNC controller. Start with the G540 profile from the geckodrive
Message 8 of 11 , Apr 1 5:24 PM
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Hi,

Why would you click the MAx CL mode in Mach3? You are now running a G540
not the MaxNC controller.

Start with the G540 profile from the geckodrive site. Then adjust the
config to suit the leadscrews your machine has.

The G540 is a 10 microstep drive, so thats 2000 steps/rev. If your machine
has a 20TPI leadscrew, then thats 40,000 steps/inch.

Then play with the velocity/accelleration  motor tuning to suit the
motors you have.

The only was to shortcut it is if someone can provide a profile, using
this machine and the G540. That said it should take less than 1/2 hour to
set it up, using the G540 profile as a starting point.

Cheers,

Peter.

---------------------------
Peter Homann
http://www.homanndesigns.com/store

On Mon 02/04/12 10:03 AM , "tonyzavilenski@..." wrote:KK
I just replaced my MAXNC controler and steppers with the Gecko G540
system. For some reason I could not get their config file to load into
Mach3. Trying to get started fast I clicked on the MAx CL mode of the
Mach3 config. The motors turn but not well. Could you tell me how you set
up your motor outputs/ports and pins page? Any help would be greatly
appreciated.

Tony

--- Original Message ---

From: Phred
Sent: March 31, 2012 3/31/12
To: mach1mach2cnc@yahoogroups.com
Subject: [mach1mach2cnc] Microstep math

All y'all,

Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a
gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the
motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10
microsteps per step, should mean that 1 inch (on mach 3 motor tuning
config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial
gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me
why?

Thanks! KK

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• I will unclick that Max Cl box but where do you find the 540 profile? I don t see it in the program that I have. Tony ... From: Phred
Message 9 of 11 , Apr 1 5:29 PM
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I will unclick that Max Cl box but where do you find the 540 profile? I don't see it in the program that I have.

Tony

--- Original Message ---

From: Phred <kaptnknemo@...>
Sent: April 1, 2012 4/1/12
To: mach1mach2cnc@yahoogroups.com
Subject: [mach1mach2cnc] Re: Microstep math

My max is older than your's and was open loop, so as soon as added the gecko and new motors, it wasn't a maxnc any more. I just picked the 540B profile that came with Mach3 and am running with that. I think the CL stands for Closed Loop and Mach3 is looking for some feedback, which the gecko won't give.

--- In mach1mach2cnc@yahoogroups.com, "tonyzavilenski@..." <tonyzavilenski@...> wrote:
>
> KK
> I just replaced my MAXNC controler and steppers with the Gecko G540 system. For some reason I could not get their config file to load into Mach3. Trying to get started fast I clicked on the MAx CL mode of the Mach3 config. The motors turn but not well. Could you tell me how you set up your motor outputs/ports and pins page? Any help would be greatly appreciated.
>
> Tony
>
> --- Original Message ---
>
> From: Phred <kaptnknemo@...>
> Sent: March 31, 2012 3/31/12
> To: mach1mach2cnc@yahoogroups.com
> Subject: [mach1mach2cnc] Microstep math
>
> Â
>
> All y'all,
>
> Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10 microsteps per step, should mean that 1 inch (on mach 3 motor tuning config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me why?
>
> Thanks! KK
>
• Thanks for the advise Peter. I will be working on it tonight. Tony ... From: Peter Sent: April 1, 2012 4/1/12 To:
Message 10 of 11 , Apr 1 5:33 PM
• 0 Attachment
Thanks for the advise Peter. I will be working on it tonight.

Tony

--- Original Message ---

From: Peter <groups@...>
Sent: April 1, 2012 4/1/12
To: mach1mach2cnc@yahoogroups.com
Subject: RE: [mach1mach2cnc] Microstep math

Hi,

Why would you click the MAx CL mode in Mach3? You are now running a G540
not the MaxNC controller.

Start with the G540 profile from the geckodrive site. Then adjust the
config to suit the leadscrews your machine has.

The G540 is a 10 microstep drive, so thats 2000 steps/rev. If your machine
has a 20TPI leadscrew, then thats 40,000 steps/inch.

Then play with the velocity/accelleration  motor tuning to suit the
motors you have.

The only was to shortcut it is if someone can provide a profile, using
this machine and the G540. That said it should take less than 1/2 hour to
set it up, using the G540 profile as a starting point.

Cheers,

Peter.

---------------------------
Peter Homann
http://www.homanndesigns.com/store

On Mon 02/04/12 10:03 AM , "tonyzavilenski@..." wrote:KK
I just replaced my MAXNC controler and steppers with the Gecko G540
system. For some reason I could not get their config file to load into
Mach3. Trying to get started fast I clicked on the MAx CL mode of the
Mach3 config. The motors turn but not well. Could you tell me how you set
up your motor outputs/ports and pins page? Any help would be greatly
appreciated.

Tony

--- Original Message ---

From: Phred
Sent: March 31, 2012 3/31/12
To: mach1mach2cnc@yahoogroups.com
Subject: [mach1mach2cnc] Microstep math

All y'all,

Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a
gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the
motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10
microsteps per step, should mean that 1 inch (on mach 3 motor tuning
config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial
gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me
why?

Thanks! KK

------------------------------------

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[Non-text portions of this message have been removed]
• Hi Tony,   The G540 profile can be found at;   http://geckodrive.com/ark-2/support.html?pid=15 MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px;
Message 11 of 11 , Apr 2 12:42 AM
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Hi Tony,

The G540 profile can be found at;

http://geckodrive.com/ark-2/support.html?pid=15 MARGIN-LEFT: 5px;
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">I will unclick
that Max Cl box but where do you find the 540 profile? I don't see it in
the program that I have.

Tony

--- Original Message ---

From: Phred
Sent: April 1, 2012 4/1/12
To: mach1mach2cnc@yahoogroups.com
Subject: [mach1mach2cnc] Re: Microstep math

My max is older than your's and was open loop, so as soon as added the
gecko and new motors, it wasn't a maxnc any more. I just picked the 540B
profile that came with Mach3 and am running with that. I think the CL
stands for Closed Loop and Mach3 is looking for some feedback, which the
gecko won't give.

--- In mach1mach2cnc@yahoogroups.com, "tonyzavilenski@..." wrote:
>
> KK
> I just replaced my MAXNC controler and steppers with the Gecko G540
system. For some reason I could not get their config file to load into
Mach3. Trying to get started fast I clicked on the MAx CL mode of the
Mach3 config. The motors turn but not well. Could you tell me how you set
up your motor outputs/ports and pins page? Any help would be greatly
appreciated.
>
> Tony
>
> --- Original Message ---
>
> From: Phred
> Sent: March 31, 2012 3/31/12
> To: mach1mach2cnc@yahoogroups.com
> Subject: [mach1mach2cnc] Microstep math
>
> Â
>
> All y'all,
>
> Just finished updating a MAXNC10 (drive circuit died after 13 yrs) to a
gecko g540, vexta 1.8 motors and Mach3. The max has 1/4-20 screws, the
motors are 1.8 deg/step(200 steps per rev), the gecko defaults to 10
microsteps per step, should mean that 1 inch (on mach 3 motor tuning
config) equals 40000 microsteps. 20 x 200 x 10 = 40000. However, my dial
gage tells me I need 42,600 steps to get 1"of trsvel, can anybody tell me
why?
>
> Thanks! KK
>

------------------------------------

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site AccessYahoo! Groups Links

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