General Category > Technical
K1200S ODOMETER
WayneC:
--- Quote from: martyoz on August 27, 2018, 01:38:10 AM ---OK I am an Electrical & Instrumentation Technician, have worked with very sophisticated PLC's, DCS, DIGITAL DRIVES & all associated field control devices.
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From your work with Instrumentation you would surely know some parameters are hard coded others are changeable
--- Quote from: martyoz on August 27, 2018, 01:38:10 AM ---The onboard Computer is just a smaller version of an Industrial control system, where software parameters can be set, changed and manipulated then the mathematics are crunched within the computer software. The wheel and final drive sensor is merely a counter, sending pulses to the computer.
If it is possible to access the Software Parameters shown in attached pics ( IF ???? ) , then it is possible to change the complete dynamics of the ABS and Instrument cluster on the bike. Million dollar question ....... can these Parameters be accessed using Diagnostic Device ?
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Well with at least 4 separate processor systems (Engine ECU, ABS, Dash, ZFE perhaps referring to "the onboard computer" is a little simplistic
--- Quote from: martyoz on August 27, 2018, 01:38:10 AM ---My Speedo is very accurate in KM ........ the ODO is reading about 60% of the actual distance travelled (ie Miles)
How do you change the ODO from Miles - KM ? Which Parameter needs to be accessed ?
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The fact the speedo is accurate in kms tells you the coding of the ODO mph/kms is solely within the dash as both are working from the same signal
--- Quote from: martyoz on August 27, 2018, 01:38:10 AM ---Obviously the BMW Techs have DIAGNOSTIC TOOLS far more sophisticated than a GS911.
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The BMW Dealer diagnostics system is not far more sophisticated than the GS911, in some respects it is more limited & more difficult to use as it is designed to be used by Techs who are not highly trained in electronics & computing, they do have the capability of programming which the GS911 does not have but the programming is to install predefined updated firmware only
Jughead:
--- Quote from: martyoz on August 27, 2018, 01:38:10 AM ---OK I am an Electrical & Instrumentation Technician, have worked with very sophisticated PLC's, DCS, DIGITAL DRIVES & all associated field control devices.
The onboard Computer is just a smaller version of an Industrial control system, where software parameters can be set, changed and manipulated then the mathematics are crunched within the computer software. The wheel and final drive sensor is merely a counter, sending pulses to the computer.
If it is possible to access the Software Parameters shown in attached pics ( IF ???? ) , then it is possible to change the complete dynamics of the ABS and Instrument cluster on the bike. Million dollar question ....... can these Parameters be accessed using Diagnostic Device ?
My Speedo is very accurate in KM ........ the ODO is reading about 60% of the actual distance travelled (ie Miles)
How do you change the ODO from Miles - KM ? Which Parameter needs to be accessed ?
Obviously the BMW Techs have DIAGNOSTIC TOOLS far more sophisticated than a GS911.
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At the rist of sounding facetious, Martyoz, by the tone of your posts it is clear that you have far more knowledge on this subject than anyone on this forum (or anywhere else for that matter) so maybe you should just rewrite all the software on the ECu, Combi, ZFE and any other controller you can find. That way you will be able to resolve all the issues that BMW has been unable to resolve thus far.
Or you could just plug in your GS911 and change the cluster coding to Kilometers, as in the screenshot below. But maybe that is too simple for you.
martyoz:
Hey now we are getting somewhere !
Cool and thank you Jughead and Wayne for your feedback and help.
1 - I DO NOT HAVE A GS911 nor any other means of accessing / changing / monitoring the K12 Computer.
2 - Why the BMW Techs were unable to do this simple change defies description !
3 - Others at different Forums will suggest that the Odometer and Speedo are separate. The ABS Microprocessor calculates the Odometer from the count Ratios of Front and Rear wheel --- 100/78 or 48/78 or 48/48 -------- 3 different Variances used across different Models. With Rear wheel count directly for Speedo.
Am unable to attach more images for some strange reason, will send them to you guys by PM if possible.
Cheers and thanks from Marty
WayneC:
--- Quote from: martyoz on August 27, 2018, 07:17:42 AM ---Hey now we are getting somewhere !
Cool and thank you Jughead and Wayne for your feedback and help.
1 - I DO NOT HAVE A GS911 nor any other means of accessing / changing / monitoring the K12 Computer.
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The answer is simple, buy one, it is clear you cant rely on techs up where you are in Oz although if you are close to Tor Motors on the sunshine coast they are good knowledgeable people with GS911 who go out of their way to satisfy their customers
As for still referring to the "K12 Computer", each of the ECU's is a processor system, so there are multiple processing systens
--- Quote from: martyoz on August 27, 2018, 07:17:42 AM ---2 - Why the BMW Techs were unable to do this simple change defies description !
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The techs should have been able to resolve it easily for you but perhaps there was some mis communication ?
--- Quote from: martyoz on August 27, 2018, 07:17:42 AM ---3 - Others at different Forums will suggest that the Odometer and Speedo are separate. The ABS Microprocessor calculates the Odometer from the count Ratios of Front and Rear wheel --- 100/78 or 48/78 or 48/48 -------- 3 different Variances used across different Models. With Rear wheel count directly for Speedo.
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There is a lot of BS on forums and it seems you have encountered a fair bit of it re how the Dash & ABS interact with wheel sensors
Jughead:
--- Quote from: WayneC on August 27, 2018, 11:04:59 AM ---There is a lot of BS on forums and it seems you have encountered a fair bit of it re how the Dash & ABS interact with wheel sensors
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You phrase it so eloquently, Wayne! ;D [emoji106]
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