g+
g+ Communities
Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  <20032004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  <20032004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014 
<== Date ==> <== Thread ==>

Subject: GSOctal 232 reboot problem
From: "Woods, PD (Paul)" <P.D.Woods@dl.ac.uk>
To: "Epics Tech Talk (E-mail)" <tech-talk@aps.anl.gov>
Date: Fri, 17 Jan 2003 14:49:14 -0000
Hi,

I am trying to interface a PLC to EPICS using the DF1 serial comms protocol
with a GreenSpring GSOctal RS232 IP module on a Hytec HY8002 carrier board.
Everything seems to work fine until I need to reboot the IOC. If I use a
soft reboot (ie 'reboot' command or CTRL-X from a terminal) VxWorks will
fail during bootup with a workQPanic and attempt a reboot and I'm stuck in a
loop. However a hardware reset reboots normally and the IOC then runs
happily.

Our current theory is that something (the GSOctal card?) is not reset
correctly with a soft reboot and as the PLC continues to transmit after the
comms are lost, the GSOctal card continues to send interrupts. As soon as
the drivers are loaded, but before they are initialised, an interrupt is
sent, causing VxWorks to workQPanic and reboot.

I am about to do some hardware checking of the reset line to confirm this,
but has anyone else seen this problem? do you have an explanation for it and
is there a solution/workaround?

Regards

Paul Woods
Diamond Project UK

Replies:
Re: GSOctal 232 reboot problem Bob Dalesio

Navigate by Date:
Prev: RE: PowerPC woes Woods, PD (Paul)
Next: RE: PowerPC woes Andy Foster
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  <20032004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014 
Navigate by Thread:
Prev: RE: PowerPC woes Andy Foster
Next: Re: GSOctal 232 reboot problem Bob Dalesio
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  <20032004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014 
ANJ, 10 Aug 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· EPICSv4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·