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1939STB4600 Manual 31
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
Internal Messages
Table 39. Message Received from the SAE-J1939 Bus
I
D
Func
J1939 Address M
C
Data
4
2
09 C 80 00 40 1
E
41 42 43 44 45 46 47 48 F
F
4
2
28 0
0
00 00 00 00 A
A
A
A
Table 39 shows the data received from the J1939 bus highlighted in gray.
The bytes (C,80,00,40) are the J1939 priority, reserve bit, data page, and
PDU. The data field contains the data payload of the message and be from 0
to 8 bytes.
The message starts with 42 hex. The function code is 28 hex. This
identifies the message as an internal message 2 and type 8. The J1938
Address field is set to 0. The Data field has an AA hex at either end. The data
between is variable.