Experimental Physics and
Industrial Control System

Thank you very much!


-----Original E-mail-----
> From: "Mark Rivers" <[email protected]>
> Sent Time: 2013-03-09 12:14:04
> To: "[email protected]" <[email protected]>,tech-talk <[email protected]>
> CC: 
> Subject: RE: IOC device support
> 
> In general you don't need to know what changed.
> 
> If the record calls a device support function, then the device support function should just access the current fields in the record and do what it is requested to do (write a new value, read a new value, etc.)
> 
> You have been posting a number of questions which are quite specific, and indicate that you are just learning EPICS.
> 
> - Writing a new record type
> - Writing device support
> 
> I think it may be more useful to write a message that says what you are actually trying to do, and get advice from the community on the best way to do that.
> 
> - What type of device are you trying to communicate with
> - What do you want to do with the device
> 
> It may turn out that the best way to do this is not to write a new record, or even to write new device support.
> 
> You should try to "start simple", and only write device support or record support if a simpler solution does not work.
> 
> Mark
> 
> ________________________________________
> From: [email protected] [[email protected]] on behalf of [email protected] [[email protected]]
> Sent: Friday, March 08, 2013 7:19 PM
> To: tech-talk
> Subject: IOC device support
> 
> Hi all,
> 
> I have a trouble about IOC device support.
> I have built a IOC application, and I should access to its PV in the client.
> So Here is the question:
> if I caput one of the PV's field, how could I know which field was processed in the device support? Just look at every field's value to check whether it is changed?
> Does anybody know any better method?
> 
> thank you!
> 
> 
> 
> 
> 

References:

RE: IOC device support Mark Rivers

IOC device support ahwwq

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