- Overview
- 1. Introduction
- 2. General Description of the Protocol
- 3. Document Structure
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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
- Parameter Groups reserved specially for the Protocol
- 4.3. Data Management
- Suspect Parameter Number (SPN)
- SLOT Definition
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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
Procedure
Multiplexor
Various metainformation is exchanged via a control byte (multiplexor). For example, this information may include: Number of data bytes to be transmitted, the packet count, the type of transmission (global or connection-oriented). The following table lists the various meanings.
J1939 Transport Protocol Commands:
| RTS: | Request To Send Announcement of the Connection Mode Data Transfer protocol |
| CTS: | Clear To Send Answer (positively acknowledging) to an RTS command, requests a receiver-specific number of individual packets (flow control) |
| EomACK: | End Of Message Acknowledge Acknowledgment of the complete receipt of a multi-packet message |
| Abort: | Termination of the Connection Mode Data Transfer protocol |
| BAM: | Broadcast Announce Message Announcement of the BAM protocol |
Last modified: Thursday, 12 April 2018, 9:59 AM