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TLR46a TCU Program

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pestar

Joined: 11 Apr 2007
Posts: 61
Location: Auckland, New Zealand

Posted: Wed May 18, 2011 6:47 pm Post subject: TLR46a TCU Program

I have the correct program for the serial number of my Rotax 914 however I am having problems connecting to the TCU.  I have tried the following from 2 different laptops and 2 different USB to DB9 serial plugs and 2 different OS (XP & Windows 7) 2 x different cables (straight and crossover) and all combinations in between and continue to get the dreaded



ERROR: Serial I/O continue with any key..  Battery is up to whack.



The Rotax documentation tells me nothing about what ports speeds the serial port should be set at - default is 9600 whether the cable should be straight or crossed over.



Would appreciate any pointers from anybody who has used this program. 



 I am setting up my 914 (new) and having disconnected the wastegate servo unit need to re-calibrate as I cannot pull maximum manifold pressure as the waste gate is opening as I go up in revs.  The Australian/New Zealand agents tell me that I need to re-calibrate as a starter.



I thought I knew computers but this is frustrating the !(at)# out of me.



Thanks



Peter Armstrong

Auckland, New Zealand

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Ivor Phillips

Joined: 16 Jan 2006
Posts: 253
Location: London UK

Posted: Wed May 18, 2011 9:57 pm Post subject: TLR46a TCU Program

Hi Peter

perhaps not a great help but a good number of usb to serial adaptors are not compatible, I use a old Windows 98 now with XP laptop with built in serial with no problem, I would try and Purchase or borrow a old machine from somebody as a way around your problem,

 Regards

Ivor

G-IVER

On 19 May 2011 03:47, pestar <peter(at)reivernet.com (peter(at)reivernet.com)> wrote:

[quote] --> RotaxEngines-List message posted by: "pestar" <peter(at)reivernet.com (peter(at)reivernet.com)>

 

 I have the correct program for the serial number of my Rotax 914 however I am having problems connecting to the TCU.  I have tried the following from 2 different laptops and 2 different USB to DB9 serial plugs and 2 different OS (XP & Windows 7) 2 x different cables (straight and crossover) and all combinations in between and continue to get the dreaded

  

 ERROR: Serial I/O continue with any key..  Battery is up to whack.

 

 The Rotax documentation tells me nothing about what ports speeds the serial port should be set at - default is 9600 whether the cable should be straight or crossed over.

 

 Would appreciate any pointers from anybody who has used this program.

 

  I am setting up my 914 (new) and having disconnected the wastegate servo unit need to re-calibrate as I cannot pull maximum manifold pressure as the waste gate is opening as I go up in revs.  The Australian/New Zealand agents tell me that I need to re-calibrate as a starter.

  

 I thought I knew computers but this is frustrating the !(at)# out of me.

 

 Thanks

 

 Peter Armstrong

 Auckland, New Zealand

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=340348#340348

 

 

 

 

 

 

 

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Gilles.Thesee(at)ac-greno
Guest

Posted: Wed May 18, 2011 10:49 pm Post subject: TLR46a TCU Program

pestar a écrit :

 	  Quote: 	
		   



 I have the correct program for the serial number of my Rotax 914 however I am having problems connecting to the TCU.  I have tried the following from 2 different laptops and 2 different USB to DB9 serial plugs and 2 different OS (XP & Windows 7) 2 x different cables (straight and crossover) and all combinations in between and continue to get the dreaded



 ERROR: Serial I/O continue with any key..  Battery is up to whack.



 The Rotax documentation tells me nothing about what ports speeds the serial port should be set at - default is 9600 whether the cable should be straight or crossed over.



 Would appreciate any pointers from anybody who has used this program. 



  I am setting up my 914 (new) and having disconnected the wastegate servo unit need to re-calibrate as I cannot pull maximum manifold pressure as the waste gate is opening as I go up in revs.  The Australian/New Zealand agents tell me that I need to re-calibrate as a starter.

   

Peter,
	




Last year I used an old desktop and - I seem to remember - a straight 

cable. Will tell you what the OS was when I go to the hangar. During the 

build, my laptop had a serial port and XP pro OS.

The calibration is for telling the system what the throttle position is, 

nothing to do with the wastegate servo and cable. We changed the 

wastegate cable last summer, and had no problem adjusting it without 

recalibration.

You may want to ask NP at Dyn'Aero for the correct cable procedure.



Best regards,

-- 

Gilles

http://contrails.free.fr

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pestar

Joined: 11 Apr 2007
Posts: 61
Location: Auckland, New Zealand

Posted: Fri May 20, 2011 2:36 pm Post subject: Re: TLR46a TCU Program

Update



Used conventional PC with straight cable to the TCU - no problems.  Am retrieving data from the TCU.  throttle position sensor fine 1.2% to 115% as per book.



The reason I wanted to look at this data is that I can only obtain 33PSI manifold pressure at 5700 because the wastegate is opening towards maximum throttle.  This is the reason I cannot obtain the required manifold pressure.



I am going to run a log and copy this and the retrieved data and sent it to our Rotax distributor.  I have been in contact with him to review this problem.



I made the following observation with the engine NOT running, stats off the program and confirmed by visual observation .  At 0 position throttle wastegate is 100%, as you move the throttle up to 115% the wastegate moves to 75%.  



Is this behaviour that others with a 914 have noticed.  I appreciate that with the engine not running the TCU may require other inputs but as a casual observation I would have thought that the wastegate would not have moved.



I am going to sit the old PC in the rear seats and run the engine up and see what happens in operational mode.



Any thoughts appreciated.  



Cheers Peter

Peter Armstrong

Auckland, New Zealand



PS Now need to look for an acceptable USB to serial cable that works with this program, anyone any ideas.

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