- Overview
- 1. Introduction
- 2. General Description of the Protocol
- 3. Document Structure
-
4. Fundamentals
- 4.1. Names and Addresses
- Device Names
- Device Address
- 4.2. Parameter Group
- General
- Structure and Type of a Parameter Group
- Example of a Global Parameter Group
- Example of a Specific Parameter Group
- 4.3. Data Management
- Suspect Parameter Number (SPN)
- SLOT Definition
-
5. Network Management
- Network Access
- 5.1. Address Conflict
- Solution and Configurations
- Handling in a Dynamic Network
- 6. Transport Protocols (Multi-packet Messages)
- 7. Diagnostics
Parameter Groups reserved specially for the Protocol
Below is a list of some typical parameter groups that are not used for exchanging process information but are used instead for administering and controlling the protocol itself.
| Parameter Group | PGN (hex) | Document | Description |
|---|---|---|---|
| Address Claimed | 0x00EE00 | J1939-81 | Used for identification of an ECU and for detection of address conflicts |
| Commanded Address | 0x00FED8 | J1939-81 | Network service for assigning device addresses to ECUs |
| Name Management | 0x009300 | J1939-81 | Network service for assigning and modifying the device name (NAME) of an ECU |
| Acknowledgement | 0x00E800 | J1939-21 | Used for acknowledgement of various network services. Can be positive or negative. The acknowledgement is referenced accordingly in the application layer. |
| Transport Protocol Command | 0x00EC00 | J1939-21 | Supplies the metadata (number of bytes, packets, etc.) for transport protocols |
| Transport Protocol Data | 0x00EB00 | J1939-21 | Transmits the payload data for the transport protocols |
| Request | 0x00EA00 | J1939-21 | Other PGNs can be requested using this PGN, similarly as for the CAN Remote Frame. But note: J1939 does not support Remote Frames. The Request PGN is a CAN data frame. |
| Proprietary A | 0x00EF00 | J1939-21 | Manufacturer-specific definable specific PGN |
| Proprietary A1 | 0x01EF00 | J1939-21 | Manufacturer-specific definable additional specific PGN |
| Proprietary B | 0x00FF00 - 0x00FFFF | J1939-21 | Manufacturer-specific definable global PGN range of 256 PGNs |
Last modified: Thursday, 12 April 2018, 9:27 AM