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Control.com topic...

LinuxPLC Project

from the LinuxPLC department...

"Open" Hardware.

Originally posted by Curt Wuollet on 1 February, 2002 - 4:59 pm

Request for comments on open hardware ideas

New Replies:

By Jiri Baum on 12 February, 2002 - 1:20 pm -

Curt: > Maybe, I don't know enough about StrongArm in the areas of VMM, gcc > and the like,...

By Johan Bengtsson on 12 February, 2002 - 10:32 am -

I agree completely about what you are doing, I am even thinking of (in some time) I could perhaps...

By Curt Wuollet on 11 February, 2002 - 5:01 pm -

Pretty much so. And they're not as open as I'd like. This isn't their fault, Open Hardware is a...

By David Nimmons on 11 February, 2002 - 4:58 pm -

I am aware of the existence of Sixnet but don't really know much in the way of details about their...

By Curt Wuollet on 11 February, 2002 - 4:55 pm -

Don't feel bad, I seem to be having a problem communicating what I'm trying to do. To overcome...

By David Nimmons on 11 February, 2002 - 1:49 pm -

I plan on looking into SOAP, but, I decided to cut my teeth on the simpler XML-RPC first. ...

By David Nimmons on 11 February, 2002 - 1:47 pm -

I am asking out of ignorance, because I really don't know. What is it you are trying to do that can...

By Curt Wuollet on 11 February, 2002 - 1:45 pm -

Maybe, I don't know enough about StrongArm in the areas of VMM, gcc and the like, maybe somebody...

By Curt Wuollet on 11 February, 2002 - 1:43 pm -

Hi Dave David Nimmons wrote: > > 1 question and 1 observation: > > Question: > ...

By Richard Ahnen on 11 February, 2002 - 1:38 pm -

Gentlemen, Wouldn't a platform such as this: ...

By Harald Albrecht on 11 February, 2002 - 1:36 pm -

David Nimmons wrote: > Observation: > XML data combined with XML-RPC provides a very...

By David Nimmons on 11 February, 2002 - 1:34 pm -

1 question and 1 observation: Question: Would the hardware from Sixnet not provide a suitable...

By Curt Wuollet on 11 February, 2002 - 1:33 pm -

Hi Peter I like the backplane idea rather than stacking IO on the PC104. It lets us run a...

By Curt Wuollet on 11 February, 2002 - 1:17 pm -

Hi Peter Aye, and there's the rub. For the greatest utility, each machine would want the data...

By Kipton Moravec on 11 February, 2002 - 1:14 pm -

Right now we have one customer with one very specific board for controlling the flow of dangerous...

By Peter Wurmsdobler on 11 February, 2002 - 1:11 pm -

Kipton, > To keep it simple I think you ask for the status, and it will dump all > the...

By Kipton Moravec on 11 February, 2002 - 1:05 pm -

We are not that far yet. I am meeting with my partner tomorrow (Sunday) maybe I can have an answer...

By Peter Wurmsdobler on 11 February, 2002 - 1:01 pm -

Curt, Socket connection would be my preference also, but on top a higher level protocol ist...

By Curt Wuollet on 11 February, 2002 - 12:56 pm -

Hi Peter And the part that a lot of folks seem to be missing is that my bus is strictly for...

By Curt Wuollet on 11 February, 2002 - 11:46 am -

Hi Peter It's interesting that there doesn't seem to be a machine to machine protocol that's open...

By Peter Wurmsdobler on 11 February, 2002 - 11:44 am -

Curt, > This is a spec for a PLC form factor, PLC compatible, PLC cost > competitive...

By Peter Wurmsdobler on 11 February, 2002 - 11:41 am -

Kipton, > The approach we are taking is to have the I/O on a 8051 board, and > communicate...

By Peter Wurmsdobler on 11 February, 2002 - 11:39 am -

Salute, > Only the connection and protocol to net need to be standard. < but which one, not...

By Curt Wuollet on 11 February, 2002 - 11:28 am -

HI Mark Yes, I'm waiting on Tri-M's ICC for a tester project as it has built-in analog and...

By Mark Hutton on 8 February, 2002 - 2:09 pm -

FYI, Have you seen the hardware at ZF Micro and Tri-M Engineering? ...

By Curt Wuollet on 6 February, 2002 - 9:36 am -

Hi Ken You kinda missed my point. If you're gonna use ISA cards or PCI cards you can simply get a...

By Curt Wuollet on 5 February, 2002 - 3:57 pm -

I agree completely(I think). Unfortunately, people are quite attached to the idea of local IO....

By Ken Emmons on 5 February, 2002 - 1:45 pm -

Curt, I don't know why you say that 32 contiguous bytes are hard to come by. Every ISA board I...

By MMiacca on 5 February, 2002 - 1:18 pm -

For years I find for a common hardware and software PLCs. I think no bus is the best solution for a...

By Curt Wuollet on 5 February, 2002 - 1:17 pm -

Hi Gary Gary James wrote: > > On Mon, 04 Feb 2002 23:31:45 Curt Wuollet wrote: > > Hi...

By Curt Wuollet on 5 February, 2002 - 11:32 am -

Hi Kipton That sounds great too. Yours is kinda closer to the RTU concept if I'm reading it right....

By Curt Wuollet on 5 February, 2002 - 10:43 am -

Hi Peter. This is a spec for a PLC form factor, PLC compatible, PLC cost competitive machine that...

By Gary James on 5 February, 2002 - 10:40 am -

On Mon, 04 Feb 2002 23:31:45 Curt Wuollet wrote: > Hi Ken > > "Ken Emmons, Jr."...

By Kipton Moravec on 5 February, 2002 - 10:37 am -

I am currently designing the first board in a series of boards that I plan to use with Linux and...

By Curt Wuollet on 5 February, 2002 - 10:36 am -

Hi Ken "Ken Emmons, Jr." wrote: > > Hello Curt, > > I read your...

By Peter Wurmsdobler on 5 February, 2002 - 10:33 am -

Hello Ken, > ... ISA somehting we can count on in the semi-long term future?? > I hope so,...

By Curt Wuollet on 5 February, 2002 - 10:31 am -

UPDATE: It has come to my attention that 32 bytes of contiguous memory is hard to come by in the...

By Ken Emmons on 4 February, 2002 - 4:24 pm -

Hello Curt, I read your description about open hardware and I have to agree with your statements....

By Curt Wuollet on 4 February, 2002 - 9:43 am -

Hi Tom I'd be interested in what they have to say. My day job employer has waived interest in this...

By Curt Wuollet on 4 February, 2002 - 9:41 am -

Thank you Ken It will be a while as the dimensions will be determined by the space required for...

By Ken Wood on 4 February, 2002 - 9:40 am -

>The packaging is still a headache. It takes a substantial volume to >make tooling costs...

By Thomas B. O'Hanlan on 1 February, 2002 - 5:00 pm -

Curt, looks good. i was/am a charter member of the PC/104 consortium. let me bounce this around my...

View entire thread (59 replies) or reply...

from the Automation List department...

"New" modbus master/rtu module

Originally posted by Mario de Sousa on 14 December, 2001 - 10:11 am

I have finally brought Phil's modbus module to work with the new generic io library. It is in the cvs now. ...

New Replies:

By Gordon Arnold on 12 February, 2002 - 12:42 pm -

One soultion for converting RS232 data to MODBUS is via our FieldServers FS-B2010 and FS-B4010...

View entire thread (3 replies) or reply...

from the Automation List department...

Preemptable Kernel

Posted by Curt Wuollet on 11 February, 2002 - 1:31 pm

According to Kerneltrap.org, the preemptable kernel patch is now a compile time option for the 2.5 kernel...

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