Experimental Physics and
Industrial Control System

"Kasemir, Kay" <[email protected]> · Wed, 12 Feb 2014 09:36:32 -0500

Hi:

Ralph's suggestion of an "OUT" link is closer to your original question how to "put" a value into another record.
In most cases, Mark's suggestion to "get" the value might be better:
If all works, the INP link shows you where the value is read.
In case of problems, "MyLocalRecord" would show an error because it cannot read its INP.
With the "OUT" link, if the IOC that holds MyRecord is stopped, MyOtherRecord would simply not be written, but you might not notice that for a long time.

Cheers
-Kay

On Feb 12, 2014, at 9:13 AM, Ralph Lange <[email protected]> wrote:
> On 12.02.2014 14:28, Mark Rivers wrote:
>> You can do that with a Channel Access link.  The exact syntax depends on the record type, but something like the following:
>> 
>> record (ai, "MyLocalRecord") {
>>     field(INP, "MyRemoteRecord CP MS")
>> }
>> 
>> This will make the value of MyLocalRecord be fetched from MyRemoteRecord every time MyRemoteRecord posts a channel access monitor.
> 
> If you do not specify the type of your link, e.g.,
> 
> record (ao, "MyRecord") {
>     field(OUT, "MyOtherRecord")
> }
> 
> 
> EPICS will determine the link type at boot time.
> If the target record is found on the same host, that link will be a 
> database link, otherwise the IOC will try to resolve it remotely (using 
> Channel Access).
> 
> Cheers,
> ~Ralph
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System