Russ, David, and Alex,
Thanks so much for your very rapid response to some things I could
probably have found somewhere in the manuals but it is so much nicer/easier to
hear it from knowledgeable people;<) I didn't expect to hear any feedback
until after the Easter weekend.
We currently have our Foxboro Field Service Rep at site and he told me
that he thought the CP's are synced once every 10 minutes by the MTK. He also
said the Process Alarm time stamping was done by the CP. He was surprised to
see that the CP time could be off by as much as 30 seconds from the MTK time
but he saw it with his own eyes. We are now wondering, based on your comments,
if the MTK cannot actually write the SECONDS at our CP Software REV and thus
only updates the CP's .MINUTE value. This would cause the CP's to always be
within a minute of the MTK but each CP has its own SECOND counter and the MTK
update from the MINUTE write doesn't cause the SECOND to automatically reset
when the MTK syncs?? Just our thoughts.
Is there any other reason an FCP might be up to 30 seconds away from the MTK
SECOND?
To David Johnson, thanks for that +SYNC tip for the TRICONEX TSAA
interface. It is a good thing to know when using/referencing the SOE time/date
functionality provided in the Triconex application. I expect the SYNC is using
the FDSI host CP's time/date info and not the MTK directly. Do you know if
that is true?
Thanks again and Happy Easter,
Tom VandeWater
Control Conversions, Inc.
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Johnson, Alex
Sent: Friday, March 25, 2016 11:36 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] CP TIME SYNC WITH MASTER TIME-KEEPER (and associated
process alarm time-stamp)
Process Alarms are time stamped by the CP.
System Alarms are time stamped by the System Monitor.
The original STATION block did not show all the time date available to the CP.
Don’t ask me why. I haven’t a clue.
The MTK does not time stamp anything. It simply sends out information about the
current time to the stations. The stations use that information.
AJ
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