Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Wed, 13 Jul 2005 14:35:02 -0500

Just forwarding this - hoping that it hits some SNL people somewhere ...

Ralph

Ralph,

	I suppose SNL team people should solve one problem. Question is about timestamp. SNL program read PV and then write to another PV. What about timestamp? 
	If I am not mistaken 
- SNL use CA and doesn't use db access library.
- CA put doesn't support timestamp.
	I use something like

	//write timestamp
	dbCommon * pRecord = ( dbCommon *) oSData.precord;
	dbScanLock( pRecord);
	pRecord->time.secPastEpoch = pCRegistrationPart->lFGetTimestampSec();
	pRecord->time.nsec = pCRegistrationPart->lFGetTimestampNSec();
	dbScanUnlock( pRecord);
	//write value
	if( dbPutField( &oSData, DBR_FLOAT, AfData, csNDDataLength) != 0)
			vFSendMessage( "Couldn't setup record");

Of course, record in db has
	field(TSE, "-2")

	There is not problem but program does some job twice! I don't like that and fell uncomfortable.
	Maybe I miss something again (like CMLOG) :-)

Thank you in advance, Andrei.

-----Original Message-----
From: Ralph Lange [mailto:[email protected]] 
Sent: Wednesday, July 13, 2005 1:43 PM
To: Ron Chestnut
Cc: [email protected]
Subject: SNL improvement and ideas

Hi Ron,

Ben Franksen and Götz Pfeiffer came up with a bunch of excellent ideas 
for the next generation SNL lately. They did what I thought would be 
best in that phase: They started writing down their ideas and putting 
them onto the EPICSwiki.

So ... would you please have a look at their ideas 
(http://www.aps.anl.gov/epics/wiki/index.php/V4_Replacement_for_SNL) and 
get in touch with them about how to coordinate further discussions and 
include whatever seems useful? I don't know if and how much time they 
can spare for development, but I'm sure they'd be willing to contribute 
in whatever way they can.

Thanks for considering!
Ralph

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System