Experimental Physics and
Industrial Control System

Mark Davis via Tech-talk <tech-talk at aps.anl.gov> · Mon, 27 Apr 2020 11:05:16 -0400

Hi all,

I am looking for some tips on the best way to implement logic such as

the following using EPICS records:

flag = 1;
for (each new set of readings)  {
    if (readbackA == fixedVal1)   flag = 1;  else
    if (flag == 1)  setVal = readbackB;  else
    if (readBackC == fixedVal2)  setVal = readbackD;
    flag = 0;
}

For the initial setting I figured simply a record that includes the

initial value in the VAL field (and PINI set to "Yes"?).

The for "loop" would be simply an FLNK in the record (or last in a

sequence of records) that gets the new readings, triggering the

processing of the the record that handles the 1st if condition (in this

case, I have one record that gets them all at once).

At that point how to best to proceed is not obvious to me, and there are

probably  lots of possibilities (A sequence of calcout or scalcout

records?  Maybe a transform record?)

Suggestions?

--
Mark Davis
NSCL/FRIB Control Systems Software Engineer
davism50 at msu.edu

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System