Subject: From: Date:

RE: [ecs] RE: Ocelot Analog reads Rob Hicks Wed, 4 Aug 2004 08:59:26 -0600

Wed, 4 Aug 2004 08:59:26 -0600

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Mark,

 

I have been tracing the output from the sensor with an oscilloscope. During
the event in question, the oscilloscope showed a sensor voltage of 0.79+-3
on the Ocelot-Secu-16 ani input port. In other words, the Ocelot should have
returned 40 as the result, not 0.  I realize that the oscilloscope could be
aliasing the result but I don’t think so.

 

--Rob

 

         

From: Mark Gilmore [mailto:mark1@markgilmore.net] 
Sent: Wednesday, August 04, 2004 8:54 AM
To: Rob Hicks
Cc: ecs@netbloc.com
Subject: [ecs] RE: Ocelot Analog reads

 

It's as I suspected: The Ocelot is sometimes returning 0 for this ANI:

0 response (see val in asterisks):
        Srv:Get SECU ani data
        8/04 07:29:45 TX: 2a 00 00 8b b4 00 a4 78
        8/04 07:29:45 RX: 2a 00 00 8b b4 00 29 00 27 00 fd 00 fd 00 *00* 00
ff ff ff 
        8/04 07:29:45 SetPrpV:Ocelot.Ana-In=5/7/0 updater=Ocelot
sendupdate=1

36 (24 hex) response:
        Srv:Get SECU ani data
        8/04 07:30:46 TX: 2a 00 00 8b b4 00 a4 78
        8/04 07:30:46 RX: 2a 00 00 8b b4 00 29 00 27 00 fd 00 fd 00 *24* 00
ff ff ff 
        8/04 07:30:46 SetPrpV:Ocelot.Ana-In=5/7/36 updater=Ocelot
sendupdate=1

I think that Martin may be seen a similar problem (I'm forwarding this email
to the list).
But are we *sure* that this input is not really 0 sometimes ?

At 08:25 AM 8/4/2004 -0600, you wrote:




Mark,

 

Ive attached logs for the temperature sensor and the Ocelot set at level 2.
The latest 0read on the analog appears to have happened at 8:04:54.

 

--Rob

 

         

From: Mark Gilmore [mailto:mark1@markgilmore.net] 
Sent: Wednesday, August 04, 2004 5:17 AM
To: Rob Hicks
Subject: Re: Ocelot Analog reads

 

i strongly suspect that ecs is the "messenger" here.
set Ocelot.Diagnose to 2, so I can see the ani data packet.

At 09:29 PM 8/3/2004 -0600, you wrote:


Mark,

 

Randomly about every ½ hour my ECS object tied to a temperature sensor reads
a zero. Im pretty sure that the temperature sensor does not have any
problems. Im using fairly stable temperature sensors. And, I never had
problems with my TimeCommander Plus using the same sensors reading what
appear to be bogus values. I have enabled level 2 logging on a sensor
(attached). Any ideas why this happens? Ive scanned the sensor with an
oscilloscope and havent seen any erratic behavior.

 

--Rob

 

 


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