Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020 
<== Date ==> <== Thread ==>

Subject: multiple asynRecord communication conflict
From: "Zohar, Sioan" <sioan@aps.anl.gov>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Wed, 25 Mar 2015 15:21:43 +0000
Hi,

I have several asynRecord instances running in a softIOC talking to a single serial port and I suspect they are conflicting.

Everything runs fine for several hours, and then the asynRecord writes stop reaching the serial port.  (I confirmed this by sniffing the serial output using the serial port from another computer).

This error is not observed when there is only one instance of the asynRecord.

This problem does not occur on every computer, so perhaps it depends on environment settings?

I've tried daisy chaining the asynRecords by flnk'ing them.  Two asynRecords are set to scan = passive, and the other is set to scan = 1 second. I thought this would prevent the possibility of multiple asynrecord instances from talking to the port at once, but the problem persists.

Thanks in advance for your help.

Sioan

Replies:
RE: multiple asynRecord communication conflict Mark Rivers

Navigate by Date:
Prev: Re: procServ+devIocStats questions Kasemir, Kay
Next: Re: procServ+devIocStats questions Ralph Lange
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020 
Navigate by Thread:
Prev: Re: procServ+devIocStats questions Ralph Lange
Next: RE: multiple asynRecord communication conflict Mark Rivers
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020 
ANJ, 16 Dec 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·