field buses

Sep 10, 2003 3 Replies
S

Hello All,



I am designing a control system and whould like some information about fieldbuses.



My system is a closed loop controler which controls 4 brushless DC motor by giving an analog speed command to a servo amplifier based on encoder feedback, torque and prox sensors.



Is it feasible to do the following:



I would like my sample frequency to be 500 microseconds on digital and analog I/O on a fieldbus. Also the system is alerted immediately when there is a communication problem with the fieldbus.



Are there open fieldbuses such as Profibus, Foundation fieldbus, or CanOpen that can accomplish this?



Thanks In advance


- Scott


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W

Process control instrumentation field busses do not operate at such high speeds. 250 m sec per update is about typical.

Walter.

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Y

You can take a look at MACRO ring from DELTA TAU...

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It's a high speed Fiber Optique bus and there is some I/O brands for this bus like OPTO 22...

Regards...

Yves

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S

Scott,

Take a look at SERCOS, I think it will cycle at that sort of speed.

Steve B.

Scott S wrote:

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