Experimental Physics and
Industrial Control System

Burkhard Kolb <[email protected]> · Wed, 10 Sep 2014 10:48:35 +0200

Hi,
you are looking at different records:
LEBT:LEBT:PS:STH1:OPER:CurrSP
and
LEBT:PS:STH1:OPER:CurrSP
Please check.

--
Dr. Burkhard Kolb
Tel +49 6159 712667
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Planckstraße 1 | D-64291 Darmstadt | www.gsi.de

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Dr.-Ing. Jürgen Henschel

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Stellvertreter: Ministerialdirigent Dr. Rolf Bernhardt

Am 10.09.2014 um 10:30 schrieb [email protected]:

> Dear Ralph,
> 
> Thanks for the comment.
> 
>> The "cainfo" command line tool will tell you if you can connect
>> successfully, and if you have the necessary access rights. (Which you
>> should have if caput does not show errors.)
>> 
> 
> The outuput of cainfo is
> LEBT:LEBT:PS:STH1:OPER:CurrSP
>    State:            connected
>    Host:             10.30.0.10:5064
>    Access:           read, write
>    Native data type: DBF_DOUBLE
>    Request type:     DBR_DOUBLE
>    Element count:    1
> 
> 
>> Some records have mechanisms (like the DRVH/DRVL drive limits of the ao
>> record or the OMSL mode selection of many output records) that would
>> reject certain values written to the PV. Some fields of some record
>> types cannot be written to at all through Channel Access (see the Record
>> Reference Manual for details on that).
>> 
>> What value are you trying to write to which field of what record type?
>> 
> 
> THis is the current setpoint of a power suplly.
> The IOC db file contains this information
> record(ai,"LEBT:PS:STH1:OPER:CurrSP"){
>  field(INP,"LV:LEBT:PS:STH1:OPER:CurrSP CP")
>  field(DESC,"PS EXT Voltage")
>  field(DESC, "LEBT STH1 Current SP")
> }
> 
> I guess that I am trying to change the INP field which has no access
> permission according to the Record Reference Manual, isn't it?
> In this case how is possible that the value can be changed with the CSS GUI?
> Should have the record a VAL field?
> 
> Sorry if they are trivial questions; but I new to EPICS.
> 
> Zunbeltz
> 
> 
>> Cheers,
>> ~Ralph
>> 
>> 
>> 
> 
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System