Experimental Physics and
Industrial Control System

Hi all,
I have the following problem (EPICS 3.14.10 / Debian 4.0)
with this tiny database (minimized to my problem) .
Why don't I see the Value/Raw Value of "HAD:RPC:S1:M0:C9:ToTL" at the
input D of the sub record "HAD:RPC:S1:M0:C9:stToTL", which I try to
access at c-code.

1) The ingredients:
> record(ao, HAD:RPC:S1:M0:C9:ToTL) {
>   field(DESC, "0 0 0 2")
>   field(DTYP, "Raw Soft Channel")
>   field(FLNK, "HAD:RPC:S1:M0:C9:stToTL")
>   field(OUT, "HAD:RPC:S1:M0:C9:stToTL")
>   field(EOFF, "0")
>   field(LOPR, "0")
>   field(HOPR, "199")
>   field(DRVH, "250")
>   field(DRVL, "0")
>   field(LINR, "LINEAR")
>   field(OMSL, "supervisory")
> }
>
> record(sub, HAD:RPC:S1:M0:C9:stToTL) {
>   field(DESC, "store 0 0 0 2")
>   field(INAM, "mySubInit")
>   field(SNAM, "myStoreFcn")
>   field(INPA, "0")
>   field(INPB, "0")
>   field(INPC, "2")
>   field(INPD, "HAD:RPC:S1:M0:C9:ToTL.RVAL")
>   field(INPE, "0")
> }
The referenced C-Code:
> static long myStoreFcn(subRecord *precord)
> {
>   ...
>   short thr;
>   ...
>   thr = precord->d;
>   ...
>
>   printf( "Record %s called myStoreFcn(%p), thr %d, precord->d %f\n",
>            precord->name, (void*) precord, thr, precord->d);
>   ...
>   return(0);
> }
> ...
> epicsRegisterFunction(myStoreFcn);
> ...
2.) The test: (caput / dbpf)

> epics> dbgf HAD:RPC:S1:M0:C9:ToTL
> DBR_DOUBLE:         0
>
> epics> dbpf HAD:RPC:S1:M0:C9:ToTL 200
> Record HAD:RPC:S1:M0:C9:stToTL called myStoreFcn(0x80577b0), thr 0,
> precord->d 0.000000
> DBR_DOUBLE:         200
>
> epics>dbpr HAD:RPC:S1:M0:C9:stToTL
> A: 0                ASG:                B: 0                C: 2
> D: 0                DESC: store 0 0 0 2 DISA: 0             DISP: 0
> DISV: 1             E: 0                F: 0                G: 0
> H: 0                I: 0                J: 0                K: 0
> L: 0                NAME: HAD:RPC:S1:M0:C9:stToTL           SEVR: NO_ALARM
> STAT: NO_ALARM      TPRO: 0             VAL: 200
3. ) The (stupid) question: Why don't I get the value of
HAD:RPC:S1:M0:C9:ToTL at D? At VAL I see it.

Thanks  for any explanation.

Peter

-- 
 Dr. rer. nat. Peter W. Zumbruch
 EE - department / Controls group / GSI
 E-Mail: P.Zumbruch_at_gsi.de
 Tel: +49-(6159)-71-1435 / Fax: +49-(6159)-71-2986
      
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Replies:

Re: sub routine record doesn't get value via INPD Maren Purves

Re: sub routine record doesn't get value via INPD Andy Foster

Re: sub routine record doesn't get value via INPD Andrew Johnson

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