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28 1939STB4600 Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
Data Field
The next 8 bytes are the data field and can have from 0 to 8 bytes used.
This is the data payload.
Table 35. J1939 Message Frame
Arbitration Field Control Data CRC ACK EOF
S
O
F
Identifier
(11 bits)
S
R
S
I
D
E
Identifier
Extension
(18 bits)
R
T
R
R
1
R
0
D
L
C
1 11 bits 1 1 18 bits 1 6 bits 64 bits 16 bits 2 bits 7 bits
The remaining fields are handled by the controller and are not accessible
through the converter.