RE: What to use? EtherCAT or Ethernet Powerlink with CANopen protocol

Thanks Armin for your clarification (I realize that PLCs have special
"equations" to obtain something that can be seen as deterministic response)
and also suggestion.
I don't doubt of filed buses "pseudo-proprietary" like it seems the
Varan-bus. The problem is "universality", that means that many manufacturer
implement it!
Kind regards,
    Albert 
 

 
  _____  

De: [email protected]
[mailto:[email protected]] En nombre de Steinhoff
Enviado el: sábado, 15 de diciembre de 2012 16:10
CC: Albert Saenz; [email protected]
Asunto: Re: [CANLIST] What to use? EtherCAT or Ethernet Powerlink with
CANopen protocol


Albert Saenz wrote:


Hi all,

I want to thanks everybodybut, I'm sorry, I think my question was not

clearly introduce.

1.    Despite any PLC can NOT be deterministic because it depends on the

"branch" it executes the program (Soft Real Time).


It dependes on the type of the "PLC" ... a can be SoftPLC be deterministic
if it 
works eventoriented on top of an RTOS.

For instance: http://dachs.net/DACHSview++_E_fleyer.pdf
[ clip]

>Anyhow, our query was to demand your opinions when we need to control more

>axis and all the I/Os (digital and analog) with a single field bus channel?

>That is because we are thinking in EtherCat or Powerlink (despite that I

>sincerely believe that Ethernet hardware will win to any other solution in

>the CNC market).



You should also have a look to the VARAN bus:
http://www.varan-bus.net/index_en.htm



Best Regards

--Armin



> Hope I have clarify properly

>Best,

>Albert Saenz

>Skype: my_voip



 




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