Re: [Emc-users] general control thoughts

2008-12-01 Thread Jim Combs
I think the easiest way to do this is for a point to point network or even a network with a hub is to use raw ethernet packets. An ethernet packet has a payload of up to 1500 bytes. That should be large enough for most things we would want. On top of the payload we have around 20 bytes of

Re: [Emc-users] general control thoughts

2008-12-01 Thread Jim Combs
We've had previous discussions about using ethernet for real time control. In theory, this is NOT difficult stuff. I'll bet I could get something going in a week or three. In practice, though, it is a PITA. That's because you would need a real time driver for each of the zillion or so different

Re: [Emc-users] general control thoughts

2008-11-29 Thread Mark Wendt (Contractor)
At 09:55 AM 11/28/2008, you wrote: Gentlemen, My comments are not focused on real time. An analogy may be helpful. In our shop we have 3 axis mills, 4 axis mills and 5 axis mills. I tell the shop to put everything on the 5 axis mills until they are full and then let the overflow (3 axis

Re: [Emc-users] general control thoughts

2008-11-29 Thread Kenneth Lerman
Mark Wendt (Contractor) wrote: At 09:55 AM 11/28/2008, you wrote: Gentlemen, ... snipped ... The application of EMC2 to many and various projects (not just real time) would lead to a clearing of the 'real time geek fog' surrounding this type of project. We need to take the IFM button

Re: [Emc-users] general control thoughts

2008-11-28 Thread Stuart Stevenson
Gentlemen, My comments are not focused on real time. An analogy may be helpful. In our shop we have 3 axis mills, 4 axis mills and 5 axis mills. I tell the shop to put everything on the 5 axis mills until they are full and then let the overflow (3 axis work) move to the 3 axis mills. I want

Re: [Emc-users] general control thoughts

2008-11-28 Thread Peter C. Wallace
] general control thoughts Kenneth Lerman wrote: We've had previous discussions about using ethernet for real time control. In theory, this is NOT difficult stuff. I'll bet I could get something going in a week or three. In practice, though, it is a PITA. That's because you would need a real time

Re: [Emc-users] general control thoughts

2008-11-28 Thread Kenneth Lerman
I think the easiest way to do this is for a point to point network or even a network with a hub is to use raw ethernet packets. An ethernet packet has a payload of up to 1500 bytes. That should be large enough for most things we would want. On top of the payload we have around 20 bytes of

Re: [Emc-users] general control thoughts

2008-11-28 Thread Chris Morley
Date: Fri, 28 Nov 2008 08:55:02 -0600 From: [EMAIL PROTECTED] To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] general control thoughts Gentlemen, My comments are not focused on real time. An analogy may be helpful. In our shop we have 3 axis mills, 4 axis mills and 5

Re: [Emc-users] general control thoughts

2008-11-28 Thread Dirk
On Nov 28, 2008, at 5:07 AM, Steve Stallings wrote: 100 uS frame interval is interesting, but this stuff is far from open source/free software model. I'll have to do some reading about it. But as far as I understood from the guy explaining it to me, the 100 Mbit driver is open, the 1Gbit

Re: [Emc-users] general control thoughts

2008-11-28 Thread Jon Elson
Kenneth Lerman wrote: I think the easiest way to do this is for a point to point network or even a network with a hub is to use raw ethernet packets. An ethernet packet has a payload of up to 1500 bytes. That should be large enough for most things we would want. On top of the payload we

Re: [Emc-users] general control thoughts

2008-11-27 Thread John Thornton
That would be cool to control non real time stuff over the ethernet or something. John On 26 Nov 2008 at 23:36, Stuart Stevenson wrote: Gentlemen, I think the idea of controlling everyday things with EMC2 is the right thing to do. The more things controlled the better the

Re: [Emc-users] general control thoughts

2008-11-27 Thread Dirk
On Nov 27, 2008, at 3:08 PM, John Thornton wrote: That would be cool to control non real time stuff over the ethernet or something. Why not control realtime stuff over ethernet? I stumbled upon this a while ago: http://www.ethernet-powerlink.org/index.php?id=17 Gentlemen, I think the

Re: [Emc-users] general control thoughts

2008-11-27 Thread Stuart Stevenson
But how do you program something different then a milling machine, lathe, or whatever? Control your home with G-codes? Do you have any specific things in mind? hal and pyvcp give you gui and control without g codes spa, washer, dryer, heating and air, dishwasher, refrig, security, door bell,

Re: [Emc-users] general control thoughts

2008-11-27 Thread Steve Stallings
100 uS frame interval is interesting, but this stuff is far from open source/free software model. -Original Message- From: Dirk [mailto:[EMAIL PROTECTED] Sent: Thursday, November 27, 2008 2:55 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] general control

Re: [Emc-users] general control thoughts

2008-11-27 Thread Stuart Stevenson
On Thu, Nov 27, 2008 at 10:07 PM, Steve Stallings [EMAIL PROTECTED] wrote: 100 uS frame interval is interesting, but this stuff is far from open source/free software model. why is this not 'open source/free'? - This SF.Net

Re: [Emc-users] general control thoughts

2008-11-27 Thread Steve Stallings
]=9tx_abdownloads_pi1[cate gory_uid]=8tx_abdownloads_pi1[cid]=21cHash=838e8cbbf7 Steve Stallings -Original Message- From: Stuart Stevenson [mailto:[EMAIL PROTECTED] Sent: Thursday, November 27, 2008 11:16 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] general control thoughts

Re: [Emc-users] general control thoughts

2008-11-27 Thread Jack Coats
] Sent: Thursday, November 27, 2008 11:16 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] general control thoughts On Thu, Nov 27, 2008 at 10:07 PM, Steve Stallings [EMAIL PROTECTED] wrote: 100 uS frame interval is interesting, but this stuff is far from

Re: [Emc-users] general control thoughts

2008-11-27 Thread Stuart Stevenson
, November 27, 2008 11:16 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] general control thoughts On Thu, Nov 27, 2008 at 10:07 PM, Steve Stallings [EMAIL PROTECTED] wrote: 100 uS frame interval is interesting, but this stuff is far from open source/free software model. why

[Emc-users] general control thoughts

2008-11-26 Thread Stuart Stevenson
Gentlemen, I think the idea of controlling everyday things with EMC2 is the right thing to do. The more things controlled the better the understanding. EMC2 is so versatile it can control and 'enhance' almost any project. The more people using it the less geeky (if that is a word) it is. I