Messages

881

NC Pod / Slaving over a hot Pod

« on: January 21, 2007, 12:56:13 AM »

OK thanks for that Ryan.

I must be doing something wrong, however I am working on my Y and Z axis now so can't play with

the Pod for the moment.  When I get that done I will be asking more questions. 

882

NC Pod / Re: Slaving over a hot Pod

« on: January 20, 2007, 10:36:34 PM »

I was wondering if any beta users out there are having success with the slaving function.

Not sure whether I am just doing something wrong or if others are having the same issues.

883

General Mach Discussion / Re: problems with homing on slaved axis a to x

« on: January 18, 2007, 08:24:13 PM »

Brett I am sure you would already have this PDF but the link is

http://www.machsupport.com/documentation/M3M1_84-A2.pdf

My PDF reader (Foxit) won't allow me to cut and paste the relevent paragraph.  5.6.4

884

General Mach Discussion / Re: problems with homing on slaved axis a to x

« on: January 18, 2007, 08:02:53 PM »

In the Mach manual that I have (maybe out of date) it talks about homing with a slaved axis Par 5.6.4

Wanted to paste the relevent bit but it is locked.  You will have to look it up. 

I am interested in this issue because the router I am cuurently building is going to depend on this

homing strategy.

885

NC Pod / Re: Slaving over a hot Pod

« on: January 18, 2007, 06:34:06 PM »

Yeah no worries Dave.

Please be aware I am not a user desperatly seeking support to get his machine going.

Just someone who is interested in the advent of the ncPod and similar devices.

It is quite possible that my input simply "muddies the waters" and would be better to

leave this type of posting to more "expert" users.

Thanks,   Greg

886

NC Pod / Re: Slaving over a hot Pod

« on: January 18, 2007, 05:08:14 PM »

Dave

Yes that was the right place to reverse motor direction.  Had not noticed that before. 

As I said in the first post this half built machine up to now only has two motors, both driving the X from both sides.

However in response to your request I tried those two motors in every combination I could by
plugging them into the Pod as X, Y, Z, A, B. and C

Every time slaving would not work and with slaving deselected each motor would jog perfectly as an individual.

Could it be a noise issue? Wiring is physically separated but not shielded.

As signal should be identical when slaved it would not be a problem. Wouldn't it. 

I spose if slaving is working for everyone else then something like that may explain it.

887

NC Pod / Re: Slaving over a hot Pod

« on: January 18, 2007, 06:53:47 AM »

Sorry I think you misunderstood Brett.  I have been trying to get slaving going using the Pod.

LPT works but I only mentioned that to demonstrate that I don't believe it is a mechanical problem.

It is slaving with the Pod that I am posting about.

888

NC Pod / Re: Slaving over a hot Pod

« on: January 18, 2007, 06:43:34 AM »

Brett

When X and A is slaved together no go. When slaving disabled both axis jog perfectly independantly.

Of course I have disengaged one pinion.

Wire it back up to LPT and slaving works as it should.

Fairly certain it is not a mechanical, driver or motor problem. Just something to do with slaving with the Pod.

Thanks,  Greg

889

NC Pod / Re: Slaving over a hot Pod

« on: January 18, 2007, 06:10:01 AM »

Motors are set to run in the correct direction. They are not fighting one another.

Being R&P I can simply release the spring that holds the pinion against the rack untill rotation direction is set correct.

Incidently I could not simply toggle "direction low active" to reverse motor direction as you can when using LPT.

Had to physically reverse two motor wires.

890

NC Pod / Slaving over a hot Pod

« on: January 18, 2007, 12:06:11 AM »

 I am building a router that has R&P drive on each side of the X axis.

Although the Y and Z axis are not done the slaving in Mach through LPT has tested well on the completed X

So as Art has released a plugin for the Pod that has slaving I thought I would give it a go 

One side of the drive is designated X and the other side A.  Slaving is selected in Mach X to A

Motor tuning is set the same to both drives.  Try to jog. No go. Just acts like it is stalling. (turns slowly, makes a lot of noise)

Tried all sorts of velocity and accelleration settings. Nothing works.

Deselect slaving and X jogs perfectly on its own.

What am I doing wrong. Something stupid I guess.