Experimental Physics and
Industrial Control System

Benjamin Franksen <[email protected]> · Thu, 24 Jul 2014 11:47:31 +0200

On Thursday 24 July 2014 11:15:56 Dirk Zimoch wrote:
> On 21.07.2014 12:41, Benjamin Franksen wrote:
> > Why don't you just set DRVL=DRVH=<the desired value>.
>
>      /* check drive limits */
>      if (prec->drvh > prec->drvl) {
>          if (value > prec->drvh)
>              value = prec->drvh;
>          else if (value < prec->drvl)
>              value = prec->drvl;
>      }
>
> DRVL=DRVH => no check at all!

Strange. Not intuitive to me. And contrary to the docs. This is from the
RRM (https://wiki-ext.aps.anl.gov/epics/index.php/RRM_3-14_Analog_Output#Desired_Output_Parameters):

"""
The VAL field's value is forced to be within the limits specified in the
fields DRVH and DRVL, which are configured by the designer:

DRVL<=VAL<=DRVH

Note: If nothing is entered for DRVH and DRVL, the output value will
never change.
"""

Cheers
Ben
--
"Make it so they have to reboot after every typo." â€• Scott Adams

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System