1986 Transam EFILiveV4 connection

[Blacky]

Here's an explanation of the RPM setup

13 NEWRFPER PRESENT MINOR LOOP REF PERIOD MSB
14 NEWRFPER+1 PRESENT MINOR LOOP REF PERIOD LSB
mS = N/65.536
RPM = 1310720/N

N is a raw value from the ECM which represents the number of ms between reference pulses.

Examples:

When N=1:
the number of ms between reference pulses is 1/65.536 which is 0.01526ms.
the RPM is 1310720/1 = 1,310,720rpm (which obviously could never occur).

When N=500
the number of ms between reference pulses is 500/65.536 which is 7.6294ms.
the RPM is 1310720/500 =2,621rpm.

When N=1000
the number of ms between reference pulses is 1000/65.536 which is 15.2588ms.
the RPM is 1310720/1000 = 1310rpm.

Regards
Paul

[Birdman1]

Need help: Can someone help me to set up an .xml file correctly? The .DS file is A100. The vehicle is a 1991 Camaro 5.7 Liter Fuel injected. I just want to know how to set up the chatter info in Efi live for the A100 file. The original .xml that is supposed to be correct for the car and is included with the EFI Live software says that message ID is #F0. That does not match what is in the correct file which is A100. Here is what the .DS file states:

DATA STREAM A100 SPECIFICATION


ENGINE USAGE:
5.0 PFI (LB9) (VIN=F) 90, 91
5.7 PFI (L98) (VIN=8) 90, 91

DATA PIN : READ DATA ON PIN "M" OF ALDL CONNECTOR

BAUD RATE : 8192 BAUD - BI-DIRECTIONAL
..PAGE
MODE 0 (INPUT MESSAGE)
ALDL REQUEST: THE ALCL TESTER MUST TRANSMET THE FOLLOWING
MESSAGE TO THE ECM, AFTER AN IDLE LINE IS
DETECTED.
- MESSAGE ID = $F4
- MESSAGE LENGTH = $56
- MODE = $00
- SUM CHECK

ECM RESPONSE: THE ECM WILL TRANSMIT THE FOLLOWING MESSAGE.
- MESSAGE ID = $F4
- MESSAGE LENGTH = $56
- MODE = $00
- SUM CHECK

MODE 1 (ALCL MODE)
THE UART ALDL MODE - MODE 1 WILL ONLY BE ACTIVE IF REQUESTED
BY THE ALCL TESTER.
ALDL REQUEST:
- MESSAGE ID = $F4
- MESSAGE LENGTH = $56
- MODE = $01
- MESSAGE NUMBER = $00
- SUM CHECK

THE ECM WILL RESPOND WITH THE FOLLOWING MESSAGE:
- MESSAGE ID = $F4
- MESSAGE LENGTH = $95
- MODE = $01
- DATA BYTE 1
.
.
- DATA BYTE 63
- SUM CHECK


MODE 10 (CLEAR MALFUNCTION CODES)
ALDL REQUEST:
- MESSAGE ID = $F4
- MESSAGE LENGTH = $56
- MODE = $0A
- CHECKSUM


THE ECM BROADCASTS NO NORMAL MODE MESSAGES, NOR DOES IT ISSUE AN $F0 POLL.

[Birdman1]

This what the original .xml file that is included with the software looks like: Heartbeat:$F0,$56,$F1,$C9
Suspend:$F1,$56,$08,$B1
Resume:$F1,$56,$09,$B0

Yet the correct .DS file which is A100 states that message ID's are all: $F4

[Blacky]

The ID's need to be $F4 (as per the A100.ds file). You'll need to change them in the EFILive setup. Make sure you use the [...] button to set up the suspend/resume messages so that the checksum bytes at the end get updated correctly.
Regards
Paul

[Birdman1]

The ID's need to be $F4 (as per the A100.ds file). You'll need to change them in the EFILive setup. Make sure you use the [...] button to set up the suspend/resume messages so that the checksum bytes at the end get updated correctly.
Regards
Paul

Ok.i was told by someone to uncheck the chatter box. That there is no heartbeat either. Is this correct? Also for suspend , i didnt see anything about that in the A1 file. So should i uncheck chatter? Should i then set it for no heartbeat? I was told my 91 350 tpi had no heartbeat. So, for suspend it should be $F4,$56,$08,$AE and resume should be $F4,$56,$09,$AD right? Please let me know.