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%