laptop wont connect to vems ecu??

[WabTheKing]

Bought the right usb to serial adaptor -
plug it in comes up with the com port no.
Configure mega tune to use that port
All I get is "no response"
Ecu has power and flashes the adaptor when powered up,

Anyone fancy talking me though? 07976299409

Do I need to alter the port settings?

Be much appreciated

Cheers
Will

[jade]

Hi Not sure I can help but

Try checking in your devise manager check or assign a new port number for your adapter Then go into preferences or tools cant remember which one now as I do not have the vems with me, and check which port you have assigned to the vems, asign the same port in the vem set up then test, It should then connected

I hope this is of help

[Jamo]

Check your talking at the right baud rate, try 9600 instead of 19200 for megatune or vice versa

[GazzaG60]

yep.

also let us know the firmware and tuning tool.

different issues with different FW and SW

[Rocco]

Bought the right usb to serial adaptor -
plug it in comes up with the com port no.
Configure mega tune to use that port
All I get is "no response"
Ecu has power and flashes the adaptor when powered up,

Anyone fancy talking me though? 07976299409

Do I need to alter the port settings?

Be much appreciated

Cheers
Will

you are having the same problem as me

[hilly]

This is a common problem with USB to RS232 adaptors and something you never see on a PC with a dedicated 9 pin RS232 port.
If the comm ports between the PC and MegaTune match then it should just work, but with USB adaptors is sometimes doesn't.

With MegaTune and the firmware version you are using (1.0.53) then the setting should be 9600 baud, only the later versions use 19200 baud.

There are a few things it could be :-

1) The USB adaptor drivers are not loaded correctly

2) You need admin rights on the PC when you plug the USB adaptor in for it to correctly recognise the device.

3) It may be the buffer timeout for the USB adaptor.
Due to how these adaptors work (because USB is WAAAAYYY faster than RS232) the adaptor stores data (in a buffer) and then sends it in a lump when the buffer is full.
If the data rate is slow (which 9600 is) then the buffer is sent after a time-out regardless of how much is in it. This time-out is often by default 16msec which is what can mess up MegaTune.
You need to go into the device properties and you will find somewhere in the settings the ability to alter the time-out, set it to the lowest available (1msec is good).

Hilly

[Jamo]

Laptops don't sell with serial cables anymore. It's down to the cheapo usb adapters people buy, I spent money on the easysync cable and have only had 1 problem with communication which was acknowledge as a bug in vemstune

[QuattroFever]

just started having this problem. Completed a firmware update with no problems (1.1.70)
Changed a few settings, burn. Switched off went in had a cup of tea and a chat, came out plugged in and powered up....nothing! "ecu not connected"

[madpugger]

If you are running 64 bit version of Windows it could cause issues also. As Jamo said, cheapo cables may be the issue... 64bit versions do not allow unsigned drivers, so you may need to find your own driver for your cable... FTDI.com may have what you need.

[QuattroFever]

just tried with 3 different OS's
Vista 32bit, win7 64bit and xp 32bit. Ecu has been ok since install. Very buggy but this is a whole new level of PITA.

[A80Avant]

i feel lucky to have kept my old laptop with serial port for this. Even that sometimes brings out buzzy com. errors, but hadnt had a problem so far (thank god!)

[speeding-g60]

these ones seem to work well for us over here, if you dont have such old stuff that still has serial....

http://shop.ebay.com/i.html?_nkw=PCMCIA+to+RS232+adapter&_sacat=0&_odkw=PCMCIA+to+serial+adapter&_osacat=0&_trksid=p3286.c0.m270.l1313

[GazzaG60]

i keep a whole stack of oldies for these jobs.

toshiba 4010,dell d600,D610.

i found that from 1.1.44 onwards i couldn't get megatune to talk to it. no response was the output. connects with vemstune. maybe a serial bandwidth usage thing?

[WabTheKing]

mine ended but being a driver fault, i downloaded bout 4 different versions before i got one that worked

[QuattroFever]

im using a best connectivity prolific usb-serial adapter.

I dont even get any info in the window. Just says at the bottom in a grey box "ecu not connected" ign on/off...nothing. Like it doesnt exist. Plus the firmware update has made the car not start and i cant get in to change anything. its a skip with wheels.

I think i need to try a serial port. Im going to pull the ecu and take it inside where i have a serial port

If it works ill buy an oldie worldie laptop.

You'd have thought they could come up with something to keep with the times by now.