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FX
-J1939 User's Manual
3U
Manufacturer Code
The manufacturer code identifies the maker of the ECU. The manufacturer code is assigned by the SAE and
listed in the SAE J1939 main specification.
Identity Number
The Identity number is a unique code that distinguishes ECUs of the same Manufacturer and Kind (Industry
Group, Vehicle System, Vehicle System Instance, Function, Function Instance, ECU instance and
Manufacturer Code).
5.18
[BFM #100 to #399] Send/Receive Data Buffer
BFM #100 to #399 in the FX
The configuration for where each data is sent/received is explained in the following chapter.
5.19
[BFM #401 to #479] Message Specific Error Code List
This List contains an error message for each message. FX
79 messages for J1939 mode. If several message buffers are combined for messages with more than 8 data
bytes in J1939 mode, the error code is stored only in the first related message.
e.g. If message 3, 4 and 5 are combined to transport a message with 24 byte, any errors will be displayed in
BFM #403 "message 3 error code."
Note
• Write K0 to clear the error for related message. If all message error codes are cleared to K0, the error flag
BFM #29 bit 15 will be reset to OFF.
• All error codes in BFM #401 to #479 will be cleared to K0 if BFM #29 bit 15 is set to OFF, or if BFM #25 bit
0 is set to ON for the module reset.
• The abort cause of PGN 60416 "connection abort" is set to HFE (K254) "error indicator" according to ISO
11783-7 in case the FX
match the number of frames in a RTS frame.
BFM No.
BFM #401
BFM #402
BFM #442
BFM #443
BFM #474
BFM #475
BFM #476
BFM #477
BFM #478
BFM #479
*1.
Messages 76 to 79 are for extended messages 1 to 4.
-J1939 module are used for data communication to the CAN bus.
3U
When using the J1939 communication mode, refer to Chapter 6
When using Layer 2 communication (11 bit/29 bit ID) mode, refer to Chapter 7
-J1939 detects any protocol errors, e.g. in case the total data count does not
3U
Detailed Error Code for Each Message
J1939 Mode
Message 43 error code
Message 74 error code
Message 75 error code
*1
Message 76 error code
*1
Message 77 error code
*1
Message 78 error code
*1
Message 79 error code
For the extended message, refer to Subsection 6.1.2
5.18 [BFM #100 to #399] Send/Receive Data Buffer
-J1939 has 42 messages for Layer 2 mode and
3U
For the error status, refer to Section 12.2
Message 1 error code
Message 2 error code
Message 42 error code
5 Allocation of Buffer Memories
Layer 2 Mode
Not used
43
1
2
3
4
5
6
7
8
9
10
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