EPICS Re: always more inputs in gensub/asub

Experimental Physics and Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	Re: always more inputs in gensub/asub
From:	Dirk Zimoch <[email protected]>
To:	EPICS tech-talk <[email protected]>
Date:	Mon, 27 Sep 2010 18:06:02 +0200

Consider using StreamDevice. Only the length of EPICS strings is limited but the length of StreamDevice messages is not (however Eric found a performance problem if the message is in the order of several megabytes). StreamDevice can take the values from 8 different (ao) records and combine them to one long message to the motor controller.

Dirk

[email protected] wrote:

I need to compute a command for a synchronous move of 8 motors.
The final command is possibly a long string (if I split it in 2, it would not be an atomic command!)

I have 7 parameters per motor and one final command line.
How would one program that?

Cascaded gensub is what I would normally do.
But is there a more elegant way?

References:: always more inputs in gensub/asub emmanuel_mayssat

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