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catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 2315
Experience:  Field service technician for CAT 19 years.
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On a 980G loader, trying to get Can communion from the

Customer Question

On a 980G loader , trying to get Can communion from the twisted pair wires directly from the engine ECM on the side of the engine. These wires are 1.3 volts and about 3 volts indicating CAN high and CAN low, however I am unable to get communication with my device. My research shows that Cat ET might have some ability to turn "on" can communication is this true? does this ECM speak 1708 or 1939 protocol or is it entirely a Cat proprietary language?
Submitted: 1 year ago.
Category: Construction and Road Equipment
Expert:  catmastertech replied 1 year ago.

Hello,

CAT electronics communicate primarily of the proprietary language CDL (CAT Data Link) Only ET can work with the protocol.

Some data is available from certain engines using the J1939 protocol. I don't know exactly what you can see, maybe just basic performance data.

ET will not turn on anything that can help you. Some machines were offered with a VIMS information ECM but, even that was limited to certain data and needed CAT software to translate the files.

If you need more help on this, please post the full machine serial number with your reply.

Customer: replied 1 year ago.
here is the vehicle identification number
Expert:  catmastertech replied 1 year ago.

Thanks for the reply. I see your serial number is *****

How can I help you?

Customer: replied 1 year ago.
Is there perhaps a conversion box that would allow me to convert RPM and torque from cat data link to J1939 or J1708 that could be installed inlin on the twinted pair CAN wires coming off the engine ecm or similar. My system only needs those two PID's from the ECM, all other inputs are from standalone senses we install
Kind Regards
Bridger Gene Kucinski
President, Go Freedom Fuel Inc./ CO-Founder Onyx Energy Generation / CNGnGo Managing Partner
"Specializing in CNG Transportation Solutions for Main Street America"
4333 W 530 Rd. Pryor Creek, OK. 74361
Ph.(###) ###-####Cell(###) ###-####Fax(###) ###-####
www.GoFreedomFuel.com ***@******.***
Expert:  catmastertech replied 1 year ago.

I am sorry, I only know the CAT systems. I have not used any third party systems but, I do think some are available. I believe they will only transmit data out like CAT Product Link/Visionlink. I have never seen anything that works like you are asking.

I will OPT-OUT so others can see your question. Maybe someone else has done this type of conversion.

Customer: replied 1 year ago.
Since you op out, I will ask again to see if anyone has a solution or knows of a devise like I am looking for:
13 October 2015 10:44
Is there perhaps a conversion box that would allow me to convert Just the PID's RPM andTORQUE from cat data link to J1939 or J1708 that could be installed inlinE on the twinted pair CAN wires coming off the engine ecm or similar. My system only needs those two PID's from the ECM, all other inputs are from standalone sensors we install.

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