Experimental Physics and
Industrial Control System

Peregrine McGehee <[email protected]> · Thu, 5 Aug 2004 04:19:38 -0600 (MDT)

Hi Susanna,

I encountered the same issue when designing genSub records
for the LEDA Run Permit system back in 1998 - please see my
tech-talk posting, which includes a code listing, at:

http://www.aps.anl.gov/epics/tech-talk/1998/msg00850.php

Best regards,
    Peregrine

On Thu, 5 Aug 2004, Susanna Jacobson wrote:

> Hi folks,
>
> This concerns subroutine and genSub records in EPICS R3.13.4.
>
> I need to pass a string into a subroutine or general subroutine
> record at initialization time because I don't want to fix the information
> in the code for the record's init and process routines.
> So I assigned the string to an input link in the .db file, just as one
> would pass a numeric constant.  However, the record interprets the string
> as a PV name, which generates a lot of pointless network traffic as link
> processing looks for a record with that name.
>
> Is there a way to tell the record that the string is a constant and
> not a PV name?  Do I have to use a string record to hold the string
> and use the input link as a link?  Or is there another, better way to
> do it?
>
> 	Thanks in advance,
> 	Susanna
> --
> =====================================================================
> Susanna Jacobson                MS 10-110
> [email protected]              Lawrence Berkeley National Laboratory
> VOICE:  (510) 486-7801          1 Cyclotron Road
> FAX:    (510) 486-7374          Berkeley, CA 94720
> =====================================================================
>

-- 
Peregrine M. McGehee	Department of Astronomy
New Mexico State University, Las Cruces, New Mexico

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System