Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	VAL field of PV in ASYN driver
From:	Vikram Bhagat <[email protected]>
To:	"[email protected]" <[email protected]>
Date:	Fri, 14 Jun 2013 07:46:45 -0700 (PDT)

Hi,

I want to know more about VAL field of PV in asynDriver.

as i understand of i defiend VAL field to some value in DB file then it sould be written on output.

I have develop my own driver to write value on serial port using asyn driver. and it is working fine.

if i write some value . it is output on port.

But if i write VAL field in DB file. it is not writting that value to the output

The DB file content is as below

record (longout,"TEST:VAL")
{
        field(DESC, "New Variable")
        field(DTYP, "asynUInt32Digital")
        field(HOPR, "255")
        field(LOPR, "0")
        field(OUT, "@asynMask(port, 0,255) setportval")
        field(VAL, "7")
}

Even if i am tring to read same PV it gives value 0.

$ caget TEST:VAL
TEST:VAL 0

Actually i put VAL field for giving fixed output on serial port at the time of IOC start bootup.

Thanks

Replies:: Re: VAL field of PV in ASYN driver Andrew Johnson

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Navigate by Thread:: Prev: Re: analog output record - constant DOL Benjamin Franksen; Next: Re: VAL field of PV in ASYN driver Andrew Johnson; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 <2013> 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

ANJ, 20 Apr 2015

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System