Re: [foxboro] HART AOUT gives error in sysmon

David,

We see this all the time when using the NOFAIL setting for DVOPTS on the
ECB201.  We haven't been able to fix it and are just about ready to turn
Hart off.  If you set the channels to 4-20 you will get rid of it, but
then you won't be using the Hart functionality anymore.  However, Hart
has proven to be very useful for loop checks and discovering problems.

We actually have inhibited the DCI blocks (ECB201s), but still get the
system alarm key to flash green.  You have to actually inhibit the
entire FBM to stop the system alarm key to stop flashing.  We don't
inhibit the FBMs because we want to know if those have a problem.

I would like to know if anyone else has found a solution for this,
because so far Invensys has not been able to solve the problem.

Thanks,
Philip Pulas
Tesoro Corp.
Golden Eagle Refinery
Martinez, CA

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of David Johnson
Sent: Thursday, September 25, 2008 2:53 PM
To: Foxboro@xxxxxxxxxxxxx
Subject: [foxboro] HART AOUT gives error in sysmon

Hello all,

I have a HART positioner used on an Hand Valve.  Basically the 
operator sets its it and forgets it.  I'd like to forget it too, but 
the darn thing is giving me an alarm in system monitor periodically 
every 20 minutes or so.  The problem is sysmon never shows anything 
wrong (except putting an asterisk on the device and flashing the 
sysmon light).  I check all three sysmon pages when I've acked the 
fault and I check when it's unacked.  The sysmon info pages are 
identical.  If I ack the fault sysmon light quits flashing red and 
goes green and the asterisk disappears.  I can (and probably will) 
inhibit the alarm.  But that kind of defeats all the swell HART info 
that I'm supposed to get.  Anyone seen this before, if so how do I fix
it.

Thanks,
David


 
 
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