Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 26 Mar 2010 15:02:22 -0000

Would it be acceptable to do this through a constant string in the
mbbo.DOL link instead of by setting VAL?

I can see this could be made to work if there were a new kind of
constant link that can support non-numeric constants, including arrays,
since as Ben suggests a PV link doesn't actually parse the string until
iocInit() time.

This actually happens to be an area I've been working on in the last
couple of weeks, and I suspect this ability might fall out of my work,
so I'll see if I can implement something like it.  I'm guessing it may
need changes to the record type code, but that's not certain right now.

** Changed in: epics-base
     Assignee: (unassigned) => Andrew Johnson (anj)

** Changed in: epics-base
       Status: Confirmed => Triaged

-- 
initialize VAL of an mbbi/o record with a string
https://bugs.launchpad.net/bugs/541396
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Status in EPICS Base: Triaged

Bug description:
With the following record in a db file

record(mbbo,"TEST:mbbo") {
	field(VAL,"Zero")
	field(ZRST,"Zero")
	field(ONST,"One")
}

I get

dbLoadRecords("test.db", "")
Error   Last token ")"
input line:     field(VAL,"Zero")
   in: path "."  file test.db line 2

I think it would be nice to be able to initialize an mbbo or mbbi record with one of the configured string values.

Original Mantis Bug: mantis-373
    http://www.aps.anl.gov/epics/mantis/view_bug_page.php?f_id=373

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System