RE: Circus Wiring and Trying to Get Rid of the Knock

[silver2row]

LimitAll or FirstAxisHomeOk

I have a four wire stop. This optical switch is for altering the start and stop of the axis, e.g. XY only. I am using a laser with only X and Y axes.

I am not sure whether to use LimitAll or FirstAxisHomeOk or FirstAxisMinusLimitOK/FirstAxisPlusLimitOK.

I have the grounds for the optical switches on the COM ports on the DB25 and the Inputs of the each, optical switch on the Acorn CNC inputs that are controlled via the 24v input pin from the PSU to the enable Input pin.

I am not sure whether this is all good now. I am reading the articles dedicated to the types of limit switches one can use on the Acorn CNC.

Seth

P.S. All feedback is welcome here. Please view my report in the last transmission too, i.e. as I think this will help you help me! Thank you, again.

[ShawnM]

Also...the motors are rated for 24v maximum. So, I am sticking with the 24v max. on the drivers. I am still reading about the motors (no clue as of now why they chose these since I cannot find anything related to them) so I can make a better informed decision on keeping them or scrapping them.

Seth

P.S. Off to test more!

Please post a pic of this motor please. I've never seen a stepper rated for 24 volts. Stepper motors are typically 2.5 to 3.5 volts. And it's not the motor you size the power supply to, it's the drives. The drives send the proper voltage and current to the motors.

[silver2row]

Aw and correct,

Mix up...not a tiny one either. I will get on the photo soon. Thank you again.

Seth

[silver2row]

Hello @ShawnM,

Seth here. Here is the photo of one of the two motors, i.e. each are the same brand and type.

Seth

P.S. If you need any additional data from me, please let me know.

[silver2row]

Dang it, let me fix the photo a bit.

Seth

[silver2row]

Here,

Sorry for all the posts...

Seth

P.S. I have been reading the manuals for the Acorn CNC and CNC12. So, "Limit" or "Limits" is the definition I was looking to understand (I think). So, on the machine, one would (in a router based CNC) account for Limit X and Limit Y without Limit Z (in my case). Is this correct? Is it correct that Limits for XY Axes need to be fed into the CNC12 source to instantiate the machine parameters for the Acorn CNC in CNC12?

[cnckeith]

make a photo album so all the photos are in one spot and the link never changes, its a very useful thing to do for your project.
here is how.. #3
https://centroidcncforum.com/viewtopic.php?p=5010#p5010

[silver2row]

@cnckeith, I did. I made a couple actually. I thought I posted them already but it is for my sake. I understand.

Seth

P.S. By the way, the post of the link(s) start here: https://photos.app.goo.gl/J8t6CoWKgTyE9yHJ8

I see some people have already viewed it. Thank you to anyone viewing it and having any sort of ideas for me. I will have time soon to test of the "limits" of the machine. I should have had to get time today but like always, something happens...

Also...here is an update to the PSU that powers and does other things for the laser and parts.

https://k40.se/k40-laser-electronics/power-supply/ is a link that kind of sums up the uses on the logic on the PSU in case others are wondering.

[silver2row]

Okay,

So, I have an optical switch, i.e. two actually. I have tried to set up the machine in various ways for homing. I cannot put my homing axis and limiting axis separate.

Also...the VCP is not popping up any longer on my computer. Is it because of the legacy CNC12 4.xx used instead of the newer versioning?

I think I need to use:

Code: Select all

FirstAxisHomeLimitOk

Special Case: Used when it
is desired to have one
switch perform both the
homing and limit functions.

I see there are more than one. FirstAxisHomeLimitOk and SecondAxisHomeLimitOk are the two in question.

If I wanted to have the home set at (0, 0) for a router and use those same switches as limit switches because of having the "limits" set in the Wizard, is this exactly what I need to home so I can start?

Or would another set of limit functions be better suited for my router-laser?

Seth

P.S. Just for everyone looking along here, I still am receiving knocking in the motor, i.e. as they are excited when I push power on.

[silver2row]

Hello Again,

Okay...so. I am just going to remove the four-wire, optical switches for homing and limiting. No issue. I will just use a 3D Printer to make a part for the right angle and then put in two-wire limit/home switches so I can use HomeAll.

I am thinking that the knocking is due to the step/direction of the Acorn CNC to DB25 to Gecko Drives (G251) to the motors because of the HomeAll not in place with these optical switches for Homing and Limiting.

So, in hindsight, I should have ripped apart the entire machine to get to the wiring first off. Anyway, off to another task!

Seth

P.S. If anyone has any insight, guide away. I will be testing with some basic limit switches soon!