%META:TOPICINFO{author="sideout" date="1077573613" format="1.0" version="1.1"}%
Data logging refers to recording the conditions of a running engine. It normally happens using serial communication with the ECU
For more information on the serial port of an OBD1 ECU, see OBD1 CN2.
For more information on OBD0 ECU serial ports, see OBD0 CN3
Stock OBD1 ECUs have datalogging capability built-in as part of the standard on-board diagnostics. However, the serial port operates at a baudrate which is not standard for PC serial ports. I can't remember offhand what baudrate it actually is, and PCs may be capable of using it, but most of us who do OBD1 datalogging use code based off of Doc's original datalogging code (which contained a bug).
Below are several programs members have written for datalogging with ROMs using doc's modified serial handler.
- ECUControl - The original PGMFI datalogging software, now expanded to cover both OBD0 & OBD1 on Windows (by Nicolas Mailloux?), Palm OS? (by Frederic Maheu?) , and soon Pocket PC?.
- Cuddle - John Cui?'s OBD1 datalogging and RTP control software.
- Turbo Edit - Jason Parker?'s OBD0 datalogging and off-line auto-tuning software.
If the outboard hardware does not support 5v TTL communication, a Serial Adapter will be needed.
See for more information on datalogging with OBD0 and [[OBD1? ECUs. This site contains ROMs for OBD0 and OBD1 ECUs and the ECUControl datalogging software. |