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Baumer GIM500R 매뉴얼

SAE J1939

3.2
SAE J1939 is the vehicle bus standard developed by the Society of Automotive Engineers (SAE) and used
for communication and diagnostics among components of cars, heavy duty trucks, utility and specialized
vehicles. J1939 is based on the physical layer of CAN bus.
SAE J1939 protocol is used in the commercial vehicle area for communication throughout the vehicle.
Several international standards for trucks and trailer rigs, forest and agricultural machines as well as for
marine applications are based on SAE J1939. Data transmission method, content and structure of the
message as well as data packets are defined by the relevant specification.
J1939: General network description.
J1939/0X: General application description.
J1939/01: Utility vehicles, trucks and buses.
J1939/7X: Application Layer.
J1939/71: Vehicle Application Layer. Vehicle.
J1939/73: Application Layer Diagnostics,
J1939/81: Network Management.
J1939/31: Network Layer. Bridge, Router, Gateway, Filter.
J1939/21: Data Link Layer.
J1939/1X: Physical Layer.
J1939/11: Physical Layer, STP cable, 250 kbit/s.
J1939/12: Physical Layer, star quad, 250 kbit/s.
J1939/13: Off-Board Diagnostic connector
SAE J1939 uses the 29-bit/ "extended" identifier in the CAN data frame.
The 8-bit address embedded in the identifier is used as source and target address for the SAE-J1939 nodes.
The information is output in the form of electronic signals and compiled in the PGNs.
The SAE J1939 protocol applied in commercial and railway vehicles, agricultural machines and ships
considers segmentation, flow control, transmission method; message acknowledged yes/no and specifies
the message content.
Baumer_GIM500R_SAEJ1939_MA_EN.docx
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03.19