Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Mon, 27 Aug 2001 09:21:41 -0600

John,

These mappings occur in your plug in for the CA server library
(in your CA server side tool). For example, the example server 
has the following ( see attached ). Your server may be based on the 
example server and therefore might have the same simplified mappings.

It would be nice to package some aspects of EPICS alarm management 
into a standalone module for use in concert with simple CA servers,
but this has not yet been done.

Jeff

//
// exPV::initFT()
//
void exPV::initFT()
{
    if ( exPV::hasBeenInitialized ) {
            return;
    }

    //
    // time stamp, status, and severity are extracted from the
    // GDD associated with the "value" application type.
    //
    exPV::ft.installReadFunc ("value", &exPV::getValue);
    exPV::ft.installReadFunc ("precision", &exPV::getPrecision);
    exPV::ft.installReadFunc ("graphicHigh", &exPV::getHighLimit);
    exPV::ft.installReadFunc ("graphicLow", &exPV::getLowLimit);
    exPV::ft.installReadFunc ("controlHigh", &exPV::getHighLimit);
    exPV::ft.installReadFunc ("controlLow", &exPV::getLowLimit);
    exPV::ft.installReadFunc ("alarmHigh", &exPV::getHighLimit);
    exPV::ft.installReadFunc ("alarmLow", &exPV::getLowLimit);
    exPV::ft.installReadFunc ("alarmHighWarning", &exPV::getHighLimit);
    exPV::ft.installReadFunc ("alarmLowWarning", &exPV::getLowLimit);
    exPV::ft.installReadFunc ("units", &exPV::getUnits);
    exPV::ft.installReadFunc ("enums", &exPV::getEnums);

    exPV::hasBeenInitialized = 1;
}

//
// exPV::getLowLimit()
//
caStatus exPV::getLowLimit(gdd &value)
{
    value.put(info.getLopr());
    return S_cas_success;
}

> -----Original Message-----
> From: john sinclair [mailto:[email protected]]
> Sent: Saturday, August 25, 2001 7:21 PM
> To: tech talk
> Subject: portable ca server
> 
> 
> I noticed that my ca server does not respond properly when a
> ca_get_callback is called using DBR_GR_??? or DBR_CTRL_???, i.e. I don't
> send warning and alarm limits back properly. Instead, lower
> warning and alarm limits are populated by values for lopr.
> Upper limits get hopr. What do I do to fix this behavior?
> 
> John Sinclair
> [email protected]
> Oak Ridge National Lab
> 865-576-6362   865-574-1268 (fax)
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System