功能 #2592
已关闭功能 #2519: Ford_SYSR: System Requirement
Ford_SYSR：FS_REQ0071_V1 Description of Node Reporting
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描述
In J2602, the very first byte transmitted by any node is the LIN Status Byte. It has this format:
LIN J2602 Status Byte
| Bit 7 (MSB) | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 (LSB) |
| ERR2 | ERR1 | ERR0 | APINFO4 | APINFO3 | APINFO2 | APINFO1 | APINFO0 |
| ERR2 | ERR1 | ERR0 | Meaning |
| 0 | 0 | 0 | No fault detected |
| 0 | 0 | 1 | Reset |
| 0 | 1 | 0 | Reserved |
| 0 | 1 | 1 | Reserved |
| 1 | 0 | 0 | Data (loopback) Error |
| 1 | 0 | 1 | Checksum Error |
| 1 | 1 | 0 | ByteField Framing Error |
| 1 | 1 | 1 | ID Parity Error |
Table 36: LIN J2602 Status Byte Meanings (BITs ERR2, ERR1, ERR0)
All these faults are "one-shot." In other words, they are only reported once and then they are cleared and not reported again until they occur again.
o DLPL_LIN_15_002 – Ford Standard J2602 Extension
All nodes are required to report the Ford Standard J2602 Error Handling Extension
o Ford Standard J2602 Error Handling Extension
Even though APINFO4 is called out by J2602, it is included in this list because Ford expects that all nodes continue to report these errors as long as the error exists.
Even though APINFO0 is designated as unused, it should be set to zero in all reported status bytes
| APINFO4 | APINFO3 | APINFO2 | APINFO1 | APINFO0 | Meaning |
| 0 | 0 | 0 | 0 | unused | No failure to report |
| 1 | Don't care | Don't care | Don't care | unused | Node not configured |
| Don't care | 0 | 1 | Don't care | unused | Output disabled temporarily due to environmental issue (temperature, voltage), no short. Do not use this for load shedding. Note that this case should be used when the disabling of the output is not due to a vehicle repairable fault. The service manual should indicate that the condition was due to the capacity of the output being exceeded. Note: Currently the LDM does use or set this fault type. |
| Don't care | 1 | 0 | Don't care | unused | One or more outputs disabled temporarily due to short or open circuit. (Load Fault) |
| Don't care | 1 | 1 | Don't care | unused | ECU fault (can be any internal fault or an output driver fault) |
| Don't care | Don't care | Don't care | 1 | unused | One or more input faults detected.Note that this is unreliable when the node reports ECU fault. |
Note: ECU fault can be used to indicate other major faults besides output FET and 3/3 life.
Table 37: Ford Standard Extension of LIN J2602 Status Byte