Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Thu, 01 Nov 2001 10:05:48 -0600

Steve Hunt wrote:
> 
> Hi,
> 
> I am trying to change the value of SDIS in a sscan record from a
> stringout and when I process the stringout (for example by writing a new
> value to its VAL field from ca)  I get the error message
> 
> filename="../recGbl.c" line number=87
> Illegal Database Request Type PV: myscan.SDIS error detected in routine:
> dbPut - database
>  request type is 0
> 
> I can change the value in SDIS directly from channel access, and I can
> change other fields such as T1PV from a stringout.
> 
> SSCAN is VERS 4.12
> Epics is 3.13.2
> 
> # works
> record(stringout,"mystringoutC") {
>         field(OUT,"myscan.T1PV")
> }
> 
> # does not work
> record(stringout,"mystringoutD") {
>         field(OUT,"myscan.SDIS")
> }
> 
> record(sscan,"myscan") {
> }
> 
> What am I doing wrong ?
> 
> Steve

SDIS is a link field. Link fields can not be changed via database links but can
be changed via CA links. Thus change:

 record(stringout,"mystringoutD") {
         field(OUT,"myscan.SDIS")
 }

to

 record(stringout,"mystringoutD") {
         field(OUT,"myscan.SDIS CA")
 }

Marty Kraimer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System