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 | Identifier | S | I | Identifier | R | R | R | D |
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|
| |
O | (11 bits) | R | D | Extension | T | 1 | 0 | L |
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| |
F |
| S | E | (18 bits) | R |
|
| C |
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|
|
| |
1 | 11 bits | 1 | 1 | 18 bits | 1 | 6 | bits |
|
| 64 bits |
| 16 bits | 2 bits | 7 bits |
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The remaining fields are handled by the controller and are not accessible through the converter.
28 | 1939STB4600 Manual |
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
