Connecting to a CNC machine, pros and cons of USB vs PP vs Ethernet etc.

[Jess]

over your Theory and untested Conclusions anyday.!

You are the one who is making claims about the performance of motion controls you've not tested simply on the basis that you've used other motion controls that happen to have the same connector on them.

[JAZZCNC]

You are the one who is making claims about the performance of motion controls you've not tested simply on the basis that you've used other motion controls that happen to have the same connector on them.

FYI with exception of a few Cheap Chinese rubbish USB controllers not worth the effort I've tested and used all Motion control cards that work with Mach3. Because after all we are talking, or I am, about expereices using Motion control cards working with Mach3 and not about the Protocol used to do this. I don't give a toss if I used a piece of string to Talk to Machine in Klingon so long as it's stable and reliable in use. My Experience with USB and Mach3 hasn't been good or stable regardless of Device Supplier or PC.

Regards the Sieg USB device if that's what your refering to as the " Untested" then Chances are it's using one I've already tested or some variant.
I could with a quick phone call findout exactly what or who's device it uses as one of the main developers of the Sieg machines I know quite well.! . . . . Chances are he is the one doing the support in UK.!

[Jess]

Because after all we are talking, or I am, about expereices using Motion control cards working with Mach3 and not about the Protocol used to do this.

We were both very obviously talking about the connection/protocol. For example; here you are, talking specifically about the protocol used, only a scant few posts ago:

The Same can't be said for USB it's irratic and unpredictable. There's so many things that can affect it IMO it's not a good or suitable connection for reliable Motion control.

Then your very next post; talking about protocol again:

Ethernet is much better than USB for Motion control

My Experience with USB and Mach3 hasn't been good or stable regardless of Device Supplier or PC.

That's fine - that's a claim based on your experience; I'm not trying to argue that you've never used a good or stable one!

However...you're not saying the same thing when your words are about USB as a whole. When you claim that USB is not a 'good or suitable connection for reliable Motion control' you're unavoidably also claiming that it's impossible for a USB motion controller to be reliable, because it uses USB.

[JAZZCNC]

However...you're not saying the same thing when your words are about USB as a whole. When you claim that USB is not a 'good or suitable connection for reliable Motion control' you're unavoidably also claiming that it's impossible for a USB motion controller to be reliable, because it uses USB.

Twist my words to suite for argument all you like the fact still remains with real world experience in a cnc enviroment using MACH3 with All connection types and just about every Motion control card that works with Mach3. USB is definatlely the one thats given me most unexplained troubles. Ethernet hasn't and that's a fact not theory.!! . . . . . Now I really have done with this pointless argument.!!

[Jess]

USB is definatlely the one thats given me most unexplained troubles.

Keyword here is 'unexplained'; you don't know the cause.

...which is exactly what I've been arguing all along. There's plenty of other things that can go wrong with a motion controller and you've finally admitted that you do not know what the problem actually is.

Thank you for admitting I was right all along.

[cropwell]

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[JAZZCNC]

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[GEOFFREY]

Go ***REMOVED*** some where else you ***REMOVED***

Jazz, it is a pity that you were forced into a slanging match, but I fully understand why. It is generally accepted that you are one of the most informed and helpful members on this forum, and I am a little suprised that you lasted so long!!! I still love you. G.XXX

[Jon.]

Im with jess on this one, usb is far more reliable.

I run both my machines with uc300's from a laptop. it never looses connection, has an excellent 100khz buffer and has been left on for over a week in the past with no issues.

I also have a wired network with multiple routers tried over the years and they all failed from time to time. I know not the same but doesn't give me much faith.

[JAZZCNC]

II run both my machines with uc300's from a laptop. it never looses connection, has an excellent 100khz buffer and has been left on for over a week in the past with no issues.

See this is the point.!! . . . . I've used the uc300 and it was fine. Untill you turned some high frequency device on near by then it would freakout. (In the USS case next Room.!!)
Yes it can be said it's the Cards fault not USB protocol but this doesn't happen with Ethernet driven devices I've used. They handle EMF and such crazyness much better in my experience.
I'm not into communication and all that goes with it. But I am into CNC and all that goes with that and I know thru experience that Ethernet is better than USB when it comes to running a CNC machine using Mach3..!! . . . Which is what started this whole Hang bag stuff in first place.!
It's just some people have to twwist words and things around to suit there own Ego's!!