Re: PV Access

[Ralph Lange via Tech-talk <tech-talk@aps.anl.gov>]

Hi Niko,

The key is the second sentence in the documentation you refer to:

The IOC continues to support the older link types that do not use JSON to specify their link addresses.

Cheers,
~Ralph

On Wed, 25 Mar 2020 at 23:33, Kivel Niko (PSI) via Tech-talk <tech-talk@aps.anl.gov> wrote:

Hi Andrew

may I piggyback on this question? I got another documentation related question.

Some time ago I tried to use JSON input links, but failed w/ anything but pva.

DB example is below, based on this doc https://epics.anl.gov/base/R7-0/3-docs/links.html

record(ai, "${SYS}:constFloatPi") {

  field(INP,  3.14159265358979)

  field(PREC, 9)

  field(PINI, "NO")

  field(DESC, "ai, holding Pi, PINI=0")

}

# db input link

# not working: error --> dbJLinkInit: Link type 'db' not found

record(ai, "${SYS}:dbInput") {

  field(INP, {db:"${SYS}:constFloatPi"})

}

Can you please point out were the current documentation of the JSON link feature can be found? Or comment on the error "Link type 'db' not found" I receive?