Bandwidth Considerations
Bus bandwidth needs to be considered when data is transmitted over CAN. The ECU has Transmit rates from 10Hz up to 1000Hz.
Example 1:
The following uses the Predefined 1 Tx DATA set. This uses 10 sequential addresses and it total transmits the value of 40 parameters. CAN Baud rate at 1Mbps
| Tx Rate | Number of Messages | Bandwidth Used (%) | Available Bandwidth for other devices |
|---|---|---|---|
| 10Hz | 10 | 1.2% | 98.8% |
| 50Hz | 10 | 6.1% | 93.9% |
| 100Hz | 10 | 12.2% | 87.8% |
| 500Hz | 10 | 61% | 39% |
| 1000Hz | 10 | Cannot be achieved |
Example 2:
The following uses the Custom 1 Tx DATA set. This uses 5 sequential addresses and it total transmits the value of 20 parameters. CAN Baud rate at 1Mbps
| Tx Rate | Number of Messages | Bandwidth Used (%) | Available Bandwidth for other devices |
|---|---|---|---|
| 10Hz | 5 | 0.6% | 99.4% |
| 50Hz | 5 | 3.05% | 96.95% |
| 100Hz | 5 | 6.1% | 93.9% |
| 500Hz | 5 | 30.5% | 69.5% |
| 1000Hz | 5 | 61% | 39% |