Re: [EXTERNAL] lso record

["Hartman, Steven via Tech-talk" <tech-talk at aps.anl.gov>]

This works . . . 

record(lso, "myLSO")

{

   field(DOL, {const:"foo"})

}

-- 

Steven Hartman

hartmansm at ornl.gov

On Sep 9, 2024, at 11:44 AM, Heinz Junkes via Tech-talk <tech-talk at aps.anl.gov> wrote:

Good evening,

I have a problem with the lso (long string out) record.

When I use it as a replacement for stringout (limited to 41 char),

according to the Record reference Manual : "To initialize a string output record it is simplest to set the VAL field directly"

record(lso, "$(user):zone0")
{
   field(VAL, 'blabberblabberblub')
}


I get the following message:


dbLoadRecords "db/tempLinuxExample.db", "user=ares"
Can't set "ares:zone0.VAL" to "blabberblabberblub"  : Bad Field value
ERROR:  at or before ')' in file "db/tempLinuxExample.db" line 7

7 |     field(VAL, 'blabberblabberblub')

ERROR failed to load 'db/tempLinuxExample.db’

We then tried the contradictory definitions of the description:
"DOL can also be a constant instead of a link, in which case VAL is initialized to the constant value.”

record(lso, "$(user):zone0")
{
   field(DOL, 'blabberblabberblub')
}


epics@ares:~$ caget -s ares:zone0.VAL$
ares:zone0.VAL$ 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

But I don't quite understand this:

"The first field that determines where the desired output originates is the output mode select (OMSL) field, which can have two possible values: closed_loop or supervisory. If closed_loop is specified, the VAL field's value is fetched from the address specified in the Desired Output Link field (DOL) which can be either a database link or a channel access link. If supervisory is specified, DOL is ignored, “

record(lso, "$(user):zone0")
{
   field(OMSL, "closed_loop")
   field(DOL, 'blabberblabberblub')
}

The same output :

epics@ares:~$ caget -s ares:zone0.VAL$
ares:zone0.VAL$ 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0



Danke Heinz