Baumer GIM700DR Manuel - Sayfa 6

Aksesuarlar Baumer GIM700DR için çevrimiçi göz atın veya pdf Manuel indirin. Baumer GIM700DR 16 sayfaları. Dynamic inclination sensors with sae j1939 interface
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Power-on behavior

3.2

1s after power-on process data on the J1939 interface are valid. Device comes up with a NAME function

message.

SAE J1939 interface

3.3

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 ve-

hicles. 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. Sev-

eral 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, 500 kbits/s

J1939/12: Physical layer, star quad, 500 kbits/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 parameter group numbers (PGNs).

The SAE J1939 protocol considers segmentation, flow control, transmission method; message acknowl-

edged yes/no and specifies the message content.

Interpretation of CAN identifier

3.3.1

The CAN identifier of a SAE J1939 message comprises parameter group number (PGN), source address,

priority, data page bit, extended data page bit and a target address (peer-to-peer PG only).

Priority

Extended

Data Page

3 bit

1 bit



In the PDU format < 240 (peer-to-peer), the PDU includes the target address. Global (255) can also be

used as target address. In this case, the parameter group is addressed to all devices, and the PGN ex-

ists only in the PDU format.

Baumer_GIM700DR_SAEJ1939_EN_V1.00_MNL.docx

27.04.2021

Data Page

PDU

Format

1 bit

8 bit

6/16

PDU

Source

Specific

Address

8 bit