comms issues via usb

Discuss issues and tuning software like DTASWin, E-Race, MegaLogViewer(DTA), etc. Also post archive versions of firmware.
welshpug
Posts: 130
Joined: Tue Sep 06, 2011 4:53 am
ECU Model: S40 Pro

comms issues via usb

Post by welshpug »

Nearly ready to install bodies on my 205, loom is built up, got a base map, DTASWIN installed on desktop PC (haven't got hold of a laptop yet)

USB to serial adapter purchased, up to date Drivers installed from Prolific website.

ECU powered up with a battery reading 12.6v, fuel pump relay primes fine.

I get this error:

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I have checked which comms port the USB is connected to, DTASWIN is pointing to the correct port.

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I am connecting through a POT box I have made myself which saves buying or making a specific lead, would be so much simpler if they used an USB connection...

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I have confirmed pinouts to be correct through the box

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lumley32
Posts: 214
Joined: Mon May 10, 2010 5:09 pm
ECU Model: S80 Pro
Firmware Version: 61

Re: comms issues via usb

Post by lumley32 »

try a different com port, some times windows applications reserve one!
welshpug
Posts: 130
Joined: Tue Sep 06, 2011 4:53 am
ECU Model: S40 Pro

Re: comms issues via usb

Post by welshpug »

have done, there are 6 ports and none will do anything but return this error. :|
lumley32
Posts: 214
Joined: Mon May 10, 2010 5:09 pm
ECU Model: S80 Pro
Firmware Version: 61

Re: comms issues via usb

Post by lumley32 »

have you tryed rebooting?
lumley32
Posts: 214
Joined: Mon May 10, 2010 5:09 pm
ECU Model: S80 Pro
Firmware Version: 61

Re: comms issues via usb

Post by lumley32 »

hang on is that a monitor lead? you might have problems with that, sometimes they gang a load of pins to the screen for a ground connection!
welshpug
Posts: 130
Joined: Tue Sep 06, 2011 4:53 am
ECU Model: S40 Pro

Re: comms issues via usb

Post by welshpug »

bother!

I have no idea what it is specifically but its quite likely, I know the 5 main pins buzz through correctly, I'll check the rest.
welshpug
Posts: 130
Joined: Tue Sep 06, 2011 4:53 am
ECU Model: S40 Pro

Re: comms issues via usb

Post by welshpug »

I think you nailed it, just tried to buzz a few pins through, damn tricky as they're so small and I only have two hands! but as you suggested, the main earth on pin 5 pulls several others to earth as well which are the knobs, though none of these are connected to the 9 pin at all, I guess it would be confusing the hell out of the ecu.
lumley32
Posts: 214
Joined: Mon May 10, 2010 5:09 pm
ECU Model: S80 Pro
Firmware Version: 61

Re: comms issues via usb

Post by lumley32 »

yea the outher day i made a lead like this for a tricky install, you only need pins 1 - 12 so moniter cable will do it, but i put new plugs on to get rid of the linked up pins.
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: comms issues via usb

Post by stevieturbo »

If buying cables to butcher, always best buying extension cables. That way they are usually just straight through, pin to pin
welshpug
Posts: 130
Joined: Tue Sep 06, 2011 4:53 am
ECU Model: S40 Pro

Re: comms issues via usb

Post by welshpug »

Right, got 2 plugs from maplin and made a straight through 9 to 15 and still no luck.

USB set to com1, FIFO buffers set to min (Suggested by Sandy Brown), also tried with them off.

with ecu off, get the usual ecu off/not connected error,


power ecu up it primes FP relay, but I get comms port already in use error.
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