Experimental Physics and
Industrial Control System

Paweł Prędki <[email protected]> · Tue, 25 Jan 2011 16:17:08 +0100

Hello,

The thing is the HIHI, HIGH, LOW and LOLO values are initialized in the

record but BOY doesn't seem to be loading them. The record I'm referring

to is as follows:

record(ao,DISK:FORWARDING") {
  field(DESC,"Forwarding Throughput")
  field(DTYP,"Raw Soft Channel")
  field(EGU,"Gbps")
  field(OMSL,"supervisory")
  field(DRVL,0.0)
  field(DRVH,10.0)
  field(LOPR,0.0)
  field(HOPR,10.0)
  field(HIHI,8.0)
  field(HIGH,7.0);
  field(LOW, 1.0);
  field(LOLO,0.0)
}

Maybe the problem lies here.

Pawel

W dniu 2011-01-25 15:20, Kasemir, Kay pisze:

Hello:

Recent EPICS releases changed the IOC code such that alarm limits that are
not defined show up as NaN. Before, uninitialized alarm or display limits
showed up as 0 (zero).

For example, you can set only the HIGH and HIHI, but not LOW and LOLO, and
then the 'Show PV Info' action will display NaN for the uninitialized
alarm_low, warn_low, but reflect the configured values for alarm_high and
warn_high.

The latest version of BOY should properly handle that and ignore such NaN
limits. We may have to update the release notes to make it obvious what
version introduced the fix.

-Kay

On 1/25/11 06:27 , "Paweł Prędki"<[email protected]>  wrote:

Hi,
I'm having problems with the meter widget, specifically with the 'Limits
from PV' property. Although the lower and upper range limits are loaded
correctly according to the database record the HIGH, LOW, HIHI and LOLO
values are not loaded at all.

The 'Show PV Info' action available in runtime mode displays NaN for
alarm_low, warn_low, alarm_high and warn_high.

Any ideas what could be the cause of this behaviour?

Cheers,
Pawel Predki

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System