Convert Cat Data Link To J1939

11.10.2019by admin
Convert Cat Data Link To J1939 4,1/5 7159 reviews
DiagramConvert Cat Data Link To J1939Convert Cat Data Link To J1939

The J1939 data link has two 120 ohm resistors in parallel in the data link. When the data link is in good condition the total resistance will be approximately 60 ohms on pins C and D of the 9 pin data link connector. When checking the J1939 on pins C and D make sure the ignition is off and no modules are communicating when you check the resistance. Google is your friend. CAT data link is, apparently, a proprietary protocol as there are a number of listings for converters from it to J1939, MODBUS, etc. (including some from CAT itself). Procon Protocol Converter - J1708/J1587, J1939, NMEA 2000, and CAT Data Link to Modbus RTU.

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The Suspect Parameter Number (SPN) is diagnostic fault code terminology found on some Caterpillar 速 products using a J1939 CAN data link.The Society of Automotive Engineers (SAE) developed the J1939 standards and SPN code terms have been assigned for specific parameters (component or system circuits) that diagnostic trouble codes (DTC) are associated with.Only the SPN numbers that are intended to be used on Caterpillar 速 products are listed.