Diagnostic tools

TheOldHokie

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Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
8,775
4,510
113
Myersville, MD
windyridgefarm.us
I have no problem with the 'data communications protocol' , as I have a PIC to handle that.
How does your PIC know what the proprietary Kubota diagnostic data encoding is? I am pretty sure it is not the same as OBDII (SAE J1979). If it were an ordinary scan tool could read and clear codes. Diagmaster is the application layer software that knows the network ECU topology, function and response codes, and packet formats. Good chance you cannot even read or transmit frames without an initial netwotk login/authentication. See the explanation below.

OBD2 vs. proprietary CAN protocols
Importantly, your car's electronic control units (ECUs) do not rely on OBD2 to function. Rather, each original equipment manufacturer (OEM) implements their own proprietary CAN protocols for this purpose. These CAN protocols may be specific to the vehicle brand, model and year. If you are not the OEM, you will normally not be able to interpret this data (unless you can reverse engineer it).

If you connect a CAN bus data logger to your car's OBD2 connector, you may see the OEM-specific CAN data, typically broadcast at a rate of 1000-2000 frames/second. However, in many newer cars a 'gateway' blocks access to this CAN data and only enables OBD2 communication via the OBD2 connector.

Dan
 
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jeepers_85

New member

Equipment
kubota
Sep 21, 2024
5
1
3
Bulgaria

GreensvilleJay

Well-known member

Equipment
BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
Apr 2, 2019
11,432
4,914
113
Greensville,Ontario,Canada
@TOH...
you answered how my PIC does it....

"unless you can reverse engineer it)."

That is what I do, well the PIC will ,in this case

Three+ decades ago I reverse engineered the hardware and the communications protocol for a ULC AA listed security system(best on the NA market). At least this time NO tricky hardware to deal with, just bits and bytes.
 
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TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
8,775
4,510
113
Myersville, MD
windyridgefarm.us
@TOH...
you answered how my PIC does it....

"unless you can reverse engineer it)."

That is what I do, well the PIC will ,in this case

Three+ decades ago I reverse engineered the hardware and the communications protocol for a ULC AA listed security system(best on the NA market). At least this time NO tricky hardware to deal with, just bits and bytes.
Be sure and share the results.

Dan
 
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GreensvilleJay

Well-known member

Equipment
BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
Apr 2, 2019
11,432
4,914
113
Greensville,Ontario,Canada
'reasonable' is a subjective term....
to me , the 'scanner' ( the hardware interface between tractor and human ) should be $200, the
'software', depending on what it does.. $100 to $500, based upon what 'chips' cost, R&D time and 5,000 'scanners' to be built. Also NO annual fees for 'updates'. Now if you buy a newer machine, then you pay for that update.

Sadly it seems Kubota has followed the John Deere approach for NO 'right to repair', instead forcing owners to go to dealers or arrange for in field service calls. Both of which could lead to serious downtime.

Now it has been said on this forum, that the majority of K owners don't farm, so waiting 2-3 months for their machines to be repaired is not a 'big deal'.
 
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TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
8,775
4,510
113
Myersville, MD
windyridgefarm.us
'reasonable' is a subjective term....
to me , the 'scanner' ( the hardware interface between tractor and human ) should be $200, the
'software', depending on what it does.. $100 to $500, based upon what 'chips' cost, R&D time and 5,000 'scanners' to be built. Also NO annual fees for 'updates'. Now if you buy a newer machine, then you pay for that update.

Sadly it seems Kubota has followed the John Deere approach for NO 'right to repair', instead forcing owners to go to dealers or arrange for in field service calls. Both of which could lead to serious downtime.

Now it has been said on this forum, that the majority of K owners don't farm, so waiting 2-3 months for their machines to be repaired is not a 'big deal'.pet year
GM charges a scan tool OEM $50K per year for their proprietary data.

You can get the BMW OEM diagnostic software anf vehicle fata files for free. You can buy a USB datalink interface from lots of places for $50.

I purchased a slimmed down Android port of the software and a basic interface cable for my phone. Cost me $150 in perpetuity and does most of what I need.

A full blown Windows version pre-installed on a dedicated PC can be purchased from third parties fof about $1500. That includes the PC and cable shipped to you ready to boot and run.

If you can handle the software install yourself you can build your own workstation for the cost of the cable.

Dan
 
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