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There are two way for Data Logging:
1. Data Logging through stock DLC Data Link Connector. For more information, see DLC communication
2. Data Logging using ECUs inside serial connector (CN2/CN3) with a modified serial handler of ECU code
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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).
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Stock OBD1 and OBD0 ECUs have datalogging capability built-in as part of the standard on-board diagnostics OBD. 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). |
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Jim Truett's writeup is a pretty good overview of what is required to get a USB Nokia cable working with datalogging. See http://forum.pgmfi.org/viewtopic.php?t=1663 -- blundar - 25 Mar 2005
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Jim Truett's writeup is a pretty good overview of what is required to get a USB Nokia cable working with datalogging. See Nokia Cable Datalogging -- blundar - 28 Mar 2005 |
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I've documented a how-to on Debugging Data Logging based on my debugging of the datalogging circuit in my JDM P30-901 ECU. -- markolson - 01 Jan 2005
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I've documented a how-to on Debugging Data Logging based on the debugging of the datalogging circuit in a JDM P30-901 ECU. -- markolson - 01 Jan 2005 |
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I've documented a how-to on Debugging Data Logging based on my debugging of the datalogging circuit in my JDM P30-901 ECU. -- markolson - 01 Jan 2005 |
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Newer notebook computers have USB ports, but no serial ports. Here are detailed instructions on how to integrate a USBMOD3 datalogging circuit into your ECU. -- markolson - 29 Oct 2004 |
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JDM P30 ECU's J12 = J4 (may apply to other JDM ecu's, Not sure)-- badboypolar - 24 Mar 2004 |
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%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. |
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