Re: calc type record question

[Pete Jemian via Tech-talk <tech-talk at aps.anl.gov>]

and eliminate white space in the .CALC expression

On 11/1/2022 11:46 AM, Arnold, Ned D. via Tech-talk wrote:
>  > Try to simplify your expression,
>
> and use spare INP fields to hold constants ... C>=1.75&&C  => C>=F&&C   (INPF=1.75)
>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> *From:* Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Kasemir, Kay via Tech-talk <tech-talk at aps.anl.gov>
> *Sent:* Tuesday, November 1, 2022 11:13 AM
> *To:* tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>; Meddage, Varuna <meddage at phys.ksu.edu>
> *Subject:* Re: calc type record question
> The length of the CALC field is limited something around 80 characters.
> Try to simplify your expression, for example by removing some parentheses that are good for readability but not strictly necessary.
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> *From:* Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Meddage, Varuna via Tech-talk <tech-talk at aps.anl.gov>
> *Sent:* Tuesday, November 1, 2022 11:08 AM
> *To:* tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
> *Subject:* [EXTERNAL] calc type record question
> Hi,
>
>
> I have following "calc" type record in one of my .db files.
>
>
> ===============================================================
>
>
> record(calc,"$(detector)_wib$(crate)0$(wib)/calc")
> {
>        field(SCAN,"5 second")
>        field(CALC,"((A>=4.6&&A<=5.2)&&(B>=4.6&&B<=5.2)&&(C>=1.75&&C<=1.80)&&(D>=3.2&&D<=3.4)&&(E>=0.7&&E<=2.0))?1:0")
>        field(INPA,"$(detector)_wib$(crate)0$(wib)/vcc")
>        field(INPB,"$(detector)_wib$(crate)0$(wib)/v1")
>        field(INPC,"$(detector)_wib$(crate)0$(wib)/v2")
>        field(INPD,"$(detector)_wib$(crate)0$(wib)/v3")
>        field(INPE,"$(detector)_wib$(crate)0$(wib)/v4")
>        field(DESC,"")
>        field(HIHI,"")
>        field(HIGH,"")
>        field(LOW,"")
>        field(LOLO,"")
>        field(MDEL,"-1")
>        field(ADEL,"-1")
>        field(OOPT,"Every Time")
>        field(PREC,"6")
> }
>
>
> ===============================================================
>
>
> When I run the EPICS, then I get an error message saying "String is too long" complaining about the expression, I inserted inside the "CALC" field in this record. But when I reduced the number of input PVs of this record from 5 to 4 and rewrite the expression inside "CALC" field, then there is no error.
>
>
> Is there maximum number of input PVs, that I can use inside a "calc" type record ?
>
>
> Any help to understand this issue is highly appreciated.
>
>
> Thanks
>
> Varuna Meddage

--
----------------------------------------------------------
Pete R. Jemian, Ph.D.                 <jemian at anl.gov>
Beam line Controls and Data Acquisition (BC, aka BCDA)
Advanced Photon Source,    Argonne National Laboratory
Argonne, IL  60439                    630 - 252 - 3189
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      Education is the one thing for which people
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