Trouble communicating

[vilant]

Hi all, was wondering if someone could help me out. I'm a DIY'er and recently purchased EFI Live V4 Pro. I own a 1990 ZR-1. I have bought the correct ALDL cable and installed all the software and drivers properly. I can't seem to get the 2 talking to each other. I have tried several different vehicle files, my COM and port #'s are the same, Max echo 232 is off and EFI support suggested changing the T6 value to 10ms, which I did with no success. I followed the ALDL troubleshooting guide which says to use the hyper terminal program (which isn't on Windows7 had to copy it from XP) and connect the cable, laptop, and car together, and if you see code displayed in the program, you know the cable is working properly. I did that and saw the code streaming. So I know the cable is fine. Depending on what vechicle file is loaded, I get different errors when in the Macro tab. It's either "expecting frame header byte", "reply frame checksum failure", or "data frame truncated (followed by a long line code)". I believe EFI Live V4 pro should be able display the dashboard, data log, etc.., but I believe some values need to be changed or I need a different vehicle file in order to do so. I have no programming background, and limited computer saavy, lol. And besides my limited knowledge, I don't want to play around changing things, then end up frying my ECU (they're not made anymore, very hard to find, and very, very expensive). Any help is great appreciated, as I'm at my wit's end trying to get this to work.
Thanks, Joe

[Blacky]

The error messages you are seeing usually indicate a faulty cable or connection, but it may still be a config problem, so...

Turn on the option: View->Show I/O, then select ALDL->Auto Detect Chatter.
Allow the chatter to display for about 10 seconds, then click Stop.
Copy/paste the chatter into this thread and I'll see if I can help you get it working.

Regards
Paul

[vilant]

Hi Paul, thanks for responding. Ok the first vehicle file is Corvette_Camaro_90_91, I turned on Serial I/O and clicked Auto detect and got
25:00.497: Initialising...
25:01.117: Opening COM2 8228,8,N,1
25:01.434: Ready.
25:56.183: Opening COM2 8228,8,N,1
26:47.135: Check vehicle interface...
26:47.142: Interface not checked because "Max232 echo" is not set. (see Com port settings)

26:47.145: Scanning for heartbeat and chatter frames...
26:47.145: Waiting for Aldl bus silence of at least 16ms...
26:49.065: Heartbeat frame:
26:49.065: 26:48.841: $40,$55,$6B
26:49.065: Heartbeat frame is followed by 32ms of silence
26:49.065: Advisable value for T6 is 16ms

26:49.065: Chatter frame(s):
26:49.065: 26:48.873: $41,$61,$00,$20,$00,$3E,$3D,$01,$00,$00,$00,$7A,$0 0,$33,$15
26:49.065: 26:49.017: $10,$59,$0A,$3E,$00,$00,$4F

Then I clicked start and got
27:48.033: Start macro: : ECM
27:48.046: Synchronising ALDL communications...
27:48.046: Waiting for heartbeat: $F0,$56,$F1,$C9
27:48.046: Waiting for Aldl bus silence of at least 16ms...
27:48.091: Start reading frame
27:48.190: Aldl frame header byte: $10
27:48.190: Aldl frame length byte: $59
27:48.207: Recv: $10,$59,$0A,$3E,$00,$00,$4F
27:48.207: Finished reading frame
27:48.207: Frame: 0 = $10,$59,$0A,$3E,$00,$00,$4F
27:48.207: Start reading frame
27:48.222: Aldl frame header byte: $40
27:48.222: Aldl frame length byte: $55
27:48.223: Recv: $40,$55,$6B
27:48.223: Finished reading frame
27:48.223: Frame: 1 = $40,$55,$6B
27:48.223: Start reading frame
27:48.223: Aldl frame header byte: $41
27:48.238: Aldl frame length byte: $61
27:48.239: Recv: $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
27:48.239: Finished reading frame
27:48.239: Frame: 2 = $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
27:48.239: Start reading frame
27:48.366: Aldl frame header byte: $F0
27:48.383: Aldl frame length byte: $56
27:48.383: Recv: $F0,$56,$F1,$C9
27:48.383: Finished reading frame
27:48.383: Frame: 3 = $F0,$56,$F1,$C9
27:48.383: Found heartbeat: $F0,$56,$F1,$C9 - ALDL synchronised
27:48.383: Send suspend command: $F1,$56,$08,$B1
27:48.383: Start writing frame
27:48.383: Send: $F1,$56,$08,$B1
27:48.383: Finished writing frame
27:48.383: Start reading frame
27:48.398: Aldl frame header byte: $F1
27:48.398: Aldl frame length byte: $56
27:48.398: Recv: $F1,$56,$08,$B1
27:48.398: Finished reading frame
27:48.399: Start writing frame
27:48.399: Send: $F4,$57,$01,$00,$B4
27:48.399: Finished writing frame
27:48.399: Start reading frame
27:48.414: Aldl frame header byte: $F4
27:48.414: Aldl frame length byte: $57
27:48.414: Recv: $F4,$57,$01,$00,$B4
27:48.415: Finished reading frame
27:48.536: Start writing frame
27:48.536: Send: $F4,$57,$01,$00,$B4
27:48.536: Finished writing frame
27:48.536: Start reading frame
27:48.542: Aldl frame header byte: $F4
27:48.542: Aldl frame length byte: $57
27:48.558: Recv: $F4,$57,$01,$00,$B4
27:48.558: Finished reading frame
27:48.584: Start writing frame
27:48.584: Send: $F4,$57,$01,$00,$B4
27:48.584: Finished writing frame
27:48.584: Start reading frame
27:48.590: Aldl frame header byte: $3F
27:48.590: Aldl frame length byte: $F3
27:48.793: Com timeout: Data frame truncated: $3F,$F3,$13,$75,$F3,$1E,$21,$66,$66,$F4,$57,$01,$0 0,$B4,$C0,$C0,$83,$00,$96,$FF,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$04,$08,$00,$00,$71,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
27:48.823: Aborting request due to previous error
27:48.833: Start writing frame
27:48.833: Send: $F4,$57,$01,$00,$B4
27:48.833: Finished writing frame
27:48.833: Start reading frame
27:48.847: Aldl frame header byte: $F4
27:48.847: Aldl frame length byte: $57
27:48.847: Recv: $F4,$57,$01,$00,$B4
27:48.847: Finished reading frame
27:48.876: Start writing frame
27:48.876: Send: $F4,$57,$01,$00,$B4
27:48.876: Finished writing frame
27:48.876: Start reading frame
27:48.877: Aldl frame header byte: $10
27:48.877: Aldl frame length byte: $40
27:48.877: Recv: $10,$55,$00
27:48.877: Error: Reply frame checksum failure
27:48.905: Finished reading frame
27:48.905: Aborting request due to previous error
27:48.912: Start writing frame
27:48.912: Send: $F4,$57,$01,$00,$B4
27:48.912: Finished writing frame
27:48.912: Start reading frame
27:48.913: Aldl frame header byte: $ 0
27:48.913: Aldl frame length byte: $ 0
27:48.913: Recv: $00,$55,$00
27:48.913: Error: Reply frame checksum failure
27:48.942: Finished reading frame
27:48.942: Aborting request due to previous error

I stopped it after a few seconds
I'll post the next file in post#4

[vilant]

Here's what I got when I had zr1_1991 selected as the vehicle file.
28:09.806: Opening COM2 8228,8,N,1
28:27.658: Check vehicle interface...
28:27.666: Interface not checked because "Max232 echo" is not set. (see Com port settings)

28:27.666: Scanning for heartbeat and chatter frames...
28:27.666: Waiting for Aldl bus silence of at least 16ms...
28:27.683: Start reading frame
28:27.760: Aldl frame header byte: $F0
28:27.760: Aldl frame length byte: $56
28:27.760: Recv: $F0,$56,$F1,$C9
28:27.760: Finished reading frame
28:27.760: Start reading frame
28:27.792: Aldl frame header byte: $10
28:27.792: Aldl frame length byte: $59
28:27.792: Recv: $10,$59,$0A,$3E,$00,$00,$4F
28:27.792: Finished reading frame
28:27.792: Start reading frame
28:27.824: Aldl frame header byte: $40
28:27.824: Aldl frame length byte: $55
28:27.824: Recv: $40,$55,$6B
28:27.824: Finished reading frame
28:27.824: Start reading frame
28:27.824: Aldl frame header byte: $41
28:27.824: Aldl frame length byte: $61
28:27.840: Recv: $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
28:27.840: Finished reading frame
28:27.840: Start reading frame
28:27.948: Com timeout: Expecting frame header byte
28:28.041: Heartbeat frame:
28:28.041: 28:27.824: $40,$55,$6B
28:28.041: Heartbeat frame is followed by 16ms of silence
28:28.041: Advisable value for T6 is 8ms

28:28.041: Chatter frame(s):
28:28.041: 28:27.840: $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14

I clicked start and got

28:42.510: Start macro: Engine data: DATA
28:42.506: Synchronising ALDL communications...
28:42.506: Waiting for heartbeat: $08,$55,$A3
28:42.506: Waiting for Aldl bus silence of at least 16ms...
28:42.542: Start reading frame
28:42.542: Aldl frame header byte: $40
28:42.542: Aldl frame length byte: $55
28:42.542: Recv: $40,$55,$6B
28:42.542: Finished reading frame
28:42.542: Frame: 0 = $40,$55,$6B
28:42.542: Start reading frame
28:42.558: Aldl frame header byte: $41
28:42.558: Aldl frame length byte: $61
28:42.574: Recv: $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
28:42.574: Finished reading frame
28:42.574: Frame: 1 = $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
28:42.574: Start reading frame
28:42.683: Com timeout: Expecting frame header byte
28:42.743: No heartbeat found - ALDL not synchronised yet
28:42.748: Synchronising ALDL communications...
28:42.748: Waiting for heartbeat: $08,$55,$A3
28:42.748: Waiting for Aldl bus silence of at least 16ms...
28:42.792: Start reading frame
28:42.894: Aldl frame header byte: $F0
28:42.894: Aldl frame length byte: $56
28:42.894: Recv: $F0,$56,$F1,$C9
28:42.894: Finished reading frame
28:42.894: Frame: 0 = $F0,$56,$F1,$C9
28:42.894: Start reading frame
28:42.926: Aldl frame header byte: $10
28:42.926: Aldl frame length byte: $59
28:42.926: Recv: $10,$59,$0A,$3E,$00,$00,$4F
28:42.926: Finished reading frame
28:42.927: Frame: 1 = $10,$59,$0A,$3E,$00,$00,$4F
28:42.927: Start reading frame
28:42.958: Aldl frame header byte: $40
28:42.958: Aldl frame length byte: $55
28:42.958: Recv: $40,$55,$6B
28:42.958: Finished reading frame
28:42.958: Frame: 2 = $40,$55,$6B
28:42.958: Start reading frame
28:42.959: Aldl frame header byte: $41
28:42.959: Aldl frame length byte: $61
28:42.975: Recv: $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
28:42.975: Finished reading frame
28:42.975: Frame: 3 = $41,$61,$00,$20,$00,$3E,$3E,$01,$00,$00,$00,$7A,$0 0,$33,$14
28:42.975: Start reading frame
28:43.073: Com timeout: Expecting frame header byte
28:43.177: No heartbeat found - ALDL not synchronised yet
28:43.184: Synchronising ALDL communications...
28:43.184: Waiting for heartbeat: $08,$55,$A3
28:43.184: Waiting for Aldl bus silence of at least 16ms...
28:43.213: Start reading frame
28:43.322: Com timeout: Expecting frame header byte
28:43.340: No heartbeat found - ALDL not synchronised yet
28:43.349: Stop macro: Engine data: DATA

Hopefully you can make sense of this, because I sure can't, lol.

[Blacky]

Hi Paul, thanks for responding. Ok the first vehicle file is Corvette_Camaro_90_91, I turned on Serial I/O and clicked Auto detect and got
25:00.497: Initialising...
25:01.117: Opening COM2 8228,8,N,1
25:01.434: Ready.
25:56.183: Opening COM2 8228,8,N,1
26:47.135: Check vehicle interface...
26:47.142: Interface not checked because "Max232 echo" is not set. (see Com port settings)

Can you try this one again with the Max232 Echo set. Set the checkbox in the Edit->Properties->Comms tab page.
I think your cable is echoing back commands.

27:48.383: Start writing frame
27:48.383: Send: $F1,$56,$08,$B1
27:48.383: Finished writing frame
27:48.383: Start reading frame
27:48.398: Aldl frame header byte: $F1
27:48.398: Aldl frame length byte: $56
27:48.398: Recv: $F1,$56,$08,$B1
27:48.398: Finished reading frame
27:48.399: Start writing frame
27:48.399: Send: $F4,$57,$01,$00,$B4
27:48.399: Finished writing frame
27:48.399: Start reading frame
27:48.414: Aldl frame header byte: $F4
27:48.414: Aldl frame length byte: $57
27:48.414: Recv: $F4,$57,$01,$00,$B4
27:48.415: Finished reading frame

It looks like the cable is reflecting back (echoing) what you're transmitting. I.e. You're getting back exactly what you transmitted but the software is not discarding the echo from the cable.
To tell the software to discard the echo and wait for the actual reply from the vehicle you need to the Max232 echo check box ticked.

Regards
Paul

[vilant]

Hi Paul, I tried again w/ Max echo 232 on (the reason it was off was because in the directions I was given from the seller, it says to make sure it is off/unticked). Here's what I got when vehicle file Corvette_Camaro_90_91 was selected and I clicked auto detect
56:04.870: Check vehicle interface...
56:04.878: Waiting for Aldl bus silence of at least 16ms...
56:04.975: Requesting Max232 interface to acknowlege: $FF,$55,$AC...
56:04.990: Max232 interface detected OK

56:05.349: Scanning for heartbeat and chatter frames...
56:05.349: Waiting for Aldl bus silence of at least 16ms...
56:07.391: Heartbeat frame:
56:07.391: 56:06.158: $40,$55,$6B
56:07.391: Heartbeat frame is followed by 32ms of silence
56:07.391: Advisable value for T6 is 16ms

56:07.391: Chatter frame(s):
56:07.391: 56:06.190: $41,$61,$00,$20,$00,$40,$41,$01,$00,$00,$00,$7A,$0 0,$38,$0A
56:07.391: 56:06.334: $10,$59,$0A,$40,$00,$00,$4D

and I got this when I clicked start
56:11.740: Start macro: : ECM
56:11.747: Synchronising ALDL communications...
56:11.747: Waiting for heartbeat: $F0,$56,$F1,$C9
56:11.747: Waiting for Aldl bus silence of at least 16ms...
56:12.373: Com timeout: Expecting frame header byte
56:12.385: Send: $F4,$57,$01,$00,$B4
56:12.483: Recv: $F4,$95,$01,$20,$F9,$00,$00,$00,$00,$00,$12,$20,$2 0,$57,$00,$28,$00,$00,$10,$00,$00,$00,$00,$FF,$41, $F3,$13,$73,$F2,$1E,$25,$66,$66,$80,$80,$00,$00,$0 0,$80,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 3,$BE,$00,$00,$E9
56:12.498: Synchronising ALDL communications...
56:12.498: Waiting for heartbeat: $F0,$56,$F1,$C9
56:12.499: Waiting for Aldl bus silence of at least 16ms...
56:12.732: Com timeout: Expecting frame header byte
56:12.746: Synchronising ALDL communications...
56:12.746: Waiting for heartbeat: $F0,$56,$F1,$C9
56:12.746: Waiting for Aldl bus silence of at least 16ms...
56:12.966: Com timeout: Expecting frame header byte
56:12.981: Synchronising ALDL communications...
56:12.981: Waiting for heartbeat: $F0,$56,$F1,$C9
56:12.981: Waiting for Aldl bus silence of at least 16ms...
56:13.200: Com timeout: Expecting frame header byte
56:13.313: Stop macro: : ECM

I got almost the same thing w/ zr1_1991 vehicle file selected. I can post it you want, but it was the same result. What do you think is going on? Does it matter that even though my car is GM, the engine was designed by Lotus?

[Blacky]

56:12.385: Send: $F4,$57,$01,$00,$B4
56:12.483: Recv: $F4,$95,$01,$20,$F9,$00,$00,$00,$00,$00,$12,$20,$2 0,$57,$00,$28,$00,$00,$10,$00,$00,$00,$00,$FF,$41, $F3,$13,$73,$F2,$1E,$25,$66,$66,$80,$80,$00,$00,$0 0,$80,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 3,$BE,$00,$00,$E9

This tells me the comms are now ok with the Max232 echo set on.

$F4 is the module ID that the request was sent to.
$57 is the number of bytes in the message less $55, $57-$55=$02 = 02 decimal.
$01,$00 are the two data bytes
$B4 is the checksum

$F4 is the module that replied
$95 is the number of bytes in the message less $55, $95-$55=$40 = 64 decimal.
$01,$29,$F9.......$BE,$00,$00 are the 64 data bytes
$E9 is the checksum

So at least we now know that data is being set/received correctly.

You need to set up the heartbeat frame correctly.

26:47.145: Scanning for heartbeat and chatter frames...
26:47.145: Waiting for Aldl bus silence of at least 16ms...
26:49.065: Heartbeat frame:
26:49.065: 26:48.841: $40,$55,$6B
26:49.065: Heartbeat frame is followed by 32ms of silence
26:49.065: Advisable value for T6 is 16ms

So you should set the heartbeat to $40,$55,$6B like this:

If you continue to get interference by other modules on the network, you may need to change the $F1's (in the Suspend and Resume commands) to $F4's, if you do click the [...] buttons to the left and change it that way, then click [Refresh] to update the checksum byte correctly. That has the effect of sending the suspend/resume commands to module $F4 (the engine controller) instead of module $F1 (most likely the body controller)

And I would try setting set the timing to this:

Setting T6 to 200 (or even 1000, 2000 etc) will prevent the
56:11.747: Waiting for Aldl bus silence of at least 16ms...
56:12.373: Com timeout: Expecting frame header byte
Basically you want the T6 value to be larger than the longest time between chatter frames.

Regards
Paul

[vilant]

Hi Paul, Ok I changed the heartbeat to $40,$55,$6B and T3 and T6 to 200ms on Corvette_Camaro_90_91 hit auto detect and got

05:49.191: Initialising...
05:49.813: Opening COM2 8228,8,N,1
05:50.135: Ready.
06:16.725: Updating vehicle information...
06:16.839: Opening COM2 8228,8,N,1
06:37.419: Check vehicle interface...
06:37.427: Waiting for Aldl bus silence of at least 200ms...
06:45.460: Can't find silence greater than 200ms
06:45.462: Hint: try halving T6 from 200ms to 100ms
06:45.462: Requesting Max232 interface to acknowlege: $FF,$55,$AC...
06:45.476: Max232 interface detected OK

06:45.479: Scanning for heartbeat and chatter frames...
06:45.479: Waiting for Aldl bus silence of at least 200ms...
06:53.543: Can't find silence greater than 200ms
06:53.544: Hint: try halving T6 from 200ms to 100ms
06:53.544: Error: Reply frame checksum failure
06:53.544: No chatter found

So I changed T6 to 100ms hit auto detect and got

07:06.346: Updating vehicle information...
07:06.461: Opening COM2 8228,8,N,1
07:45.346: Updating vehicle information...
07:45.445: Opening COM2 8228,8,N,1
07:49.147: Check vehicle interface...
07:49.153: Waiting for Aldl bus silence of at least 100ms...
07:49.391: Requesting Max232 interface to acknowlege: $FF,$55,$AC...
07:49.397: Max232 interface detected OK

07:49.399: Scanning for heartbeat and chatter frames...
07:49.399: Waiting for Aldl bus silence of at least 100ms...
07:51.510: Heartbeat frame:
07:51.510: 07:50.070: $40,$55,$6B
07:51.510: Heartbeat frame is followed by 32ms of silence
07:51.510: Advisable value for T6 is 16ms

07:51.510: Chatter frame(s):
07:51.510: 07:50.102: $41,$61,$00,$20,$00,$44,$46,$01,$00,$00,$00,$7A,$0 0,$3F,$FA
07:51.510: 07:50.246: $10,$59,$0A,$44,$00,$00,$49

Clicked start and got this repeating, so I stopped it

07:55.095: Start macro: : ECM
07:55.095: Synchronising ALDL communications...
07:55.095: Waiting for heartbeat: $40,$55,$6B
07:55.095: Waiting for Aldl bus silence of at least 100ms...
07:55.535: Com timeout: Data frame truncated: $80,$7C,$AB,$84,$B1,$05,$01,$02,$02,$A4,$01,$FF,$C A,$10,$59,$0A,$44,$00,$00,$49,$40,$55,$6B,$41,$61, $00,$20,$00,$44,$47,$01,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00
07:55.551: Error: No echo received from MAX232
07:55.560: Send: $F4,$57,$01,$00,$B4
07:55.653: Recv: $F4,$95,$01,$20,$F9,$00,$00,$00,$00,$00,$12,$20,$2 0,$57,$00,$28,$00,$00,$10,$00,$00,$00,$00,$FF,$44, $EF,$13,$71,$F1,$1E,$2B,$66,$66,$80,$80,$00,$00,$0 0,$80,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 3,$5C,$00,$00,$49
07:55.670: Synchronising ALDL communications...
07:55.670: Waiting for heartbeat: $40,$55,$6B
07:55.670: Waiting for Aldl bus silence of at least 100ms...
07:55.933: Error: Reply frame checksum failure
07:55.948: Error: No echo received from MAX232
07:55.952: Send: $F4,$57,$01,$00,$B4
07:56.045: Recv: $F4,$95,$01,$20,$F9,$00,$00,$00,$00,$00,$12,$20,$2 0,$57,$00,$28,$00,$00,$10,$00,$00,$00,$00,$FF,$44, $EF,$13,$71,$F1,$1E,$2B,$66,$66,$80,$80,$00,$00,$0 0,$80,$80,$83,$00,$96,$FF,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 3,$5C,$00,$00,$49
07:56.055: Synchronising ALDL communications...
07:56.055: Waiting for heartbeat: $40,$55,$6B
07:56.055: Waiting for Aldl bus silence of at least 100ms...
07:56.549: Com timeout: Data frame truncated: $01,$F1,$56,$08,$B1,$00,$3F,$F9,$10,$59,$0A,$44,$0 0,$00,$49,$40,$55,$6B,$41,$61,$00,$20,$00,$44,$47, $01,$00,$00,$00,$7A,$00,$3F,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0 0,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00
07:56.565: Error: No echo received from MAX232

I got the same with zr1_1991 as the vehicle file. You don't think it's my laptop somehow, do you? BTW, I really appreciate you taking time to help me out.

[vilant]

Hey Paul, sorry to bother you. I tried working with "support" and Andrew directed me back to you, lol. Had to change T6 to 100ms (per the software reecommendation, because 200ms wasn't working). When I went through the "help" section of V4, it says my car is supported (1990 Car J 5.7 LT5 SFI $F4,$57,$01,$00). But I'm still having no luck.
Here's a screen shot, better than posting lines of code. I don't understand why it can't see the Max echo when I start, but can when I auto-detect.
Attachment 14528
Does something else need to be configured differently?

[Blacky]

For some reason, I can't see that screen shot. Can you try re-posting it. Although if it is a screen shot of the text it is much better if you copy/paste the actual text. That way I can search it much more easily using text editing tools.
Regards
Paul