Re: [foxboro] STOP_TIMER Function Failure to Stop the Timer
- From: "Reed, Mike" <Mike.Reed@xxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 14 Sep 2010 14:23:34 -0600
Thank you Russ, and yes the Timer Blocks are in the same compound as the
sequence block. This was the first time we have observed the STOP_TIMER
failure after many months of this sequence block running.
Michael Reed
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Russ Kaiser
Sent: Tuesday, September 14, 2010 1:59 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] STOP_TIMER Function Failure to Stop the Timer
Michael,
For clarification purposes, was the timer block in the same compound as
the
sequence block? If not, was it in the same CP?
I have always considered these unsecured calls risky but sometimes
unavoidable. We have CP40Bs that have had similar problems with timer
commands but the timers were located in another station. The solution
was to
concentrate the desired run state of the timer into a Boolean output of
the
sequence block and then explicitly connect it.
If the problem is sporadic, I would chalk it up to overruns or a
communication issue; if it is constant I would have a fresh set of eyes
look
for a typo.
Russ Kaiser
Corn Products
Winston-Salem
>
>I recently had an experience with a CP60 where a couple of timer blocks
>failed to respond to the STOP_TIMER command. The HLBL commands before
>and after the STOP_TIMER call worked, but the timers continued running.
>Has anyone had a similar experience, and what did you do to fix it?
Our
>solution was to reboot the CP.
>
>
>Michael Reed
>ATK Aerospace Systems Group
>Bacchus Operations
>phone: 801 251-3745
>
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