Re: CalcOut record update to another record

[Mark Rivers <rivers@cars.uchicago.edu>]

Hi Amien,


I have a few comments and questions.


In "cur" you have this line:

       field(INPB,        "$(dev):coefOffset.PROC CP MS")


I don't think this will work.  You have CP on the PROC field, meaning you want the record to process when the PROC field changes.  However, EPICS does not post monitors on the PROC field according to this document:


https://wiki-ext.aps.anl.gov/epics/index.php/RRM_3-14_dbCommon


In coefOffset you have this line:

        field(FLNK,        "$(dev):newcur")


This will process newcur, but not cause it to obtain a new value.  Is this intended?


In calc_offset1 you have this line:

        field(OUT,         "$(dev):newcur")


The will write the new value to newcur, but without processing newcur.  Is this intended?  It means newcur will only process when coefOffset is processed.


You have not shown the "range" record.  Does that have an FLNK to coefOffset?


Mark



________________________________
From: tech-talk-bounces@aps.anl.gov <tech-talk-bounces@aps.anl.gov> on behalf of Amien WORK <acrombie@tlabs.ac.za>
Sent: Thursday, January 25, 2018 3:25 AM
To: EPICS Tech-Talk
Subject: CalcOut record update to another record


Hi


    record(calcout,        "$(dev):cur")
    {
        field(INPA,        "$(dev):raw_cur.VAL CP MS")
        field(INPB,        "$(dev):coefOffset.PROC CP MS")
        field(OOPT,        "Every Time")
        field(DOPT,        "Use CALC")
        field(CALC,        "A-B")
        field(FLNK,        "$(dev):rangeunit")
    }

    record(ao,             "$(dev):newcur")
    {
        field(DTYP,        "Soft Channel")
    }

    record(sel,            "$(dev):coefOffset")
    {
        field(SELM,        "Specified")
        field(NVL,         "$(dev):range")
        field(INPB,        "$(dev):calc_offset1.VAL")
        field(INPC,        "$(dev):calc_offset2.VAL")
        field(INPD,        "$(dev):calc_offset3.VAL")
        field(INPE,        "$(dev):calc_offset4.VAL")
        field(INPF,        "$(dev):calc_offset5.VAL")
        field(INPG,        "$(dev):calc_offset6.VAL")
        field(INPH,        "$(dev):calc_offset7.VAL")
        field(INPI,        "$(dev):calc_offset8.VAL")
        field(FLNK,        "$(dev):newcur")

    }

    ## below is offset1 of 8 possible offsets I need to save

    record(bo,            "$(dev):store_offset1")
    {
        field(PINI,        "YES")
        field(VAL,        "0")
        field(FLNK,        "$(dev):calc_offset1" )
    }
    record(bo,            "$(dev):clear_offset1")
    {
        field(VAL,        "0")
        field(OUT,        "$(dev):store_offset1")
        field(FLNK,        "$(dev):store_offset1")
    }
    record(calcout,        "$(dev):calc_offset1")
    {
        field(PINI,        "YES")
        field(INPA,        "$(dev):raw_cur.VAL")   # rawval
        field(INPB,        "$(dev):store_offset1")
        field(OOPT,        "Every Time")
        field(DOPT,        "Use CALC")
        field(CALC,        "B=1?A:0*A")
        field(OUT,         "$(dev):newcur")
    }

My problem is that I see the calculated values like $(dev):calc_offset1 correctly, but the $(dev):newcur shows 0.

I want to have a 'current' offset (newcur)  that changes depending on what the current 'range' is (user can select Range 1 to 8)

Amien