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AFS 4500 and VP-200 Fuel Qty

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schmoboy

Joined: 26 Feb 2006
Posts: 130

Posted: Fri Apr 18, 2014 4:56 am Post subject: AFS 4500 and VP-200 Fuel Qty

For anyone else out there with a AFS4500 EE and VP-200 combination...



Engine data stream between my AFS4500 EE and the VP-200 is all good 

except for fuel qty.  For some reason the fuel qty on the VP-200 is 

higher.  I have 11.0 in Left and 9.0 in Right.  The AFS4500 is 

calibrated and reading correctly.  The VP-200 shows 210 in Left and 190 

in Right.



I have the AFS4500 serial out to the VP-200 set as Chelton.  I've tried 

both AFS3000/3500 and EIS/Chelton as the serial IN setting in the 

VP-200.  Same issue of in both cases.  AFS outputs left tank in Aux 2 

and right tank in Aux3 fields of the Chelton protocol.  Those config 

field in the VP-200 have them as Integer.  I've also tried changing 

those two to Decimal, which causes the qty to read 21 left and 19 right, 

which is closer, but still not correct.



Anyone with an AFS4500EE and VP200 combo that has fuel qty working?  If 

so can you confirm the Serial Out protocol from the AFS4500 and the 

Serial In Protocol on the VP-200 and the Aux fields at the at the bottom 

of the Serial Data Association page?



Thanks,



-Sean #40303

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Mike Whisky

Joined: 05 Jun 2006
Posts: 336
Location: Switzerland

Posted: Fri Apr 18, 2014 1:26 pm Post subject: Re: AFS 4500 and VP-200 Fuel Qty

Hi Sean

I have the same combo and didn't notice any difference. However having said this my AF-4500 displays Fuel in Liters and the VP-200 in Gallons. I'll check next time I'm at my plane but that might be a while.



Mike

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RV-10 builder (flying)
#511

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Sat Apr 19, 2014 7:24 am Post subject: Re: AFS 4500 and VP-200 Fuel Qty

Mine is a GRT with VP-200, and I had to put a resistor in-line to get the voltage correct. What is your EIS?

John

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_________________
#40572 Phase One complete in 2011

schmoboy

Joined: 26 Feb 2006
Posts: 130

Posted: Sat Apr 19, 2014 10:23 am Post subject: AFS 4500 and VP-200 Fuel Qty

The AFS 4500 EE is an EFIS/Engine monitor combo, so it provides data to 

the VP-200 using AVTN/Chelton protocol over serial.



Odd part is that everything but the fuel qty is correct.  Had first 

engine start today and all the other instrumentation on the VP-200 

matched the AFS 4500.



 	  Quote: 	
		   johngoodman <mailto:johngoodman(at)earthlink.net>

 April 19, 2014 at 10:24 AM

 



 Mine is a GRT with VP-200, and I had to put a resistor in-line to get 

 the voltage correct. What is your EIS?

 John



 --------

 #40572 Phase One complete in 2011





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 http://forums.matronics.com/viewtopic.php?p=422103#422103

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schmoboy

Joined: 26 Feb 2006
Posts: 130

Posted: Sat Apr 19, 2014 10:33 am Post subject: AFS 4500 and VP-200 Fuel Qty

Thanks Mike.  Whenever you get the chance.  I just want to confirm the 

protocol and data association fields to check off the "Sean's not a 

bonehead" item on my list. 



 	  Quote: 	
		   Mike Whisky <mailto:rv-10(at)wellenzohn.net>

 April 18, 2014 at 4:26 PM

 



 Hi Sean

 I have the same combo and didn't notice any difference. However having 

 said this my AF-4500 displays Fuel in Liters and the VP-200 in 

 Gallons. I'll check next time I'm at my plane but that might be a while.



 Mike



 --------

 RV-10 builder (flying, test phase)

 #511





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=422072#422072

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