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Date: Sun, 15 Jul 2007 20:44:04 -0600
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: EM2 NOP flashing w/RPM and a couple of other
 questions
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Hi Chris,

Congratulations on the taxi and sorry to hear you are having
intermittent problems.  Those are the worst kind.  A couple of things
you might check.  

Are there any crimp connectors that might not be secure?  Try wiggling
the wires or give the EM2 to EC2 connections a light pull to see if the
wires come apart.  Check the pins on the 37 pin connector.  They should
be straight and all the same length.  Solder pins can move around a
little while soldering and crimp pins might not get seated properly.
Also be sure the 'D' connector is seated properly.  A while back, there
were some problems with the backshell interfering with the case that
kept the connector from seating properly.

Good Luck,
Bob W. 

On Sun, 15 Jul 2007 21:23:51 -0500
"Christopher Barber" <CBarber@TexasAttorney.net> wrote:

> Yeah, I think the NOP issue is poised to drive me crazy.  I checked the grounds and serial connections todayand all checked ok, hooked it all back up and low and behold NO Flashing.  Taxi'ed the plane for the first time for a few minutes (really fun).  Taxi'ed back to the hangar and started to run the Auto Program with what seemed to be some succes and got about a third the way through when I started to worry about the engine getting too hot (I wish the H2O temp was displayed in the program mode), so I shut down Auto Program and the H2O was reading 233, so I am glad I shut down.
> 
> Let it cool a bit and started to restart and NOW the dang thing was flashing between NOP and the tach reading again.  GEEEESH.
> 
> Chris
> 
> BTW, did I mention I TAXI'ED for the first time today <g>
> 
> 
>   ----- Original Message ----- 
>   From: Tracy Crook 
>   To: Rotary motors in aircraft 
>   Sent: Sunday, July 15, 2007 4:21 PM
>   Subject: [FlyRotary] Re: EM2 NOP flashing w/RPM and a couple of other questions
> 
> 
>   Hi all, finally back from CO where we finally got the cabin plumbing OKed by the inspector (and got the thing basically finished).
> 
>   Tom is correct, NOP means Non Operational or Inoperative.  In this case it means the EC2 is not commuicating with the EM2. Either the two serial wires between them are not connected properly or an ungrounded condition or wiring error has blown one of the serial connections. The Auto Program mode will not work in this condition.   
> 
>   Tracy  (still bleary after non-stop drive from Colorado) 
> 
>    
>   On 7/14/07, thomas walter <roundrocktom@yahoo.com> wrote: 
>     Tracy will have the final say, as he wrote the code, but most likely:
> 
>     NOP = No Operation.  or Non Operational.   Uh for the life of me I can not recall when I started using that notation, but if you flag part of a  schematic, or assembly code, with NOP it is pretty universal comment among geeks (EE's). 
> 
>     At least it isn't flashing "Fubar". :)   Once I "inherited" some assembly code on a project which had never been commented (debug/maintenance nightmare). Thankfully the previous engineer had a hard copy with his hand written Chinese notation along side the code. Excited as I started to recognize a pattern of hand written characters by the sections of code I couldn't figure out. Thankfully another engineer  explained what "fubar" looked like in Chinese. 
> 
>     Tom
> 
> 
> ----------------------------------------------------------------------------
>     Boardwalk for $500? In 2007? Ha! 
>     Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. 
> 
> 
> 
> 


-- 
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