Documentation

This input port is available whenever the Show Input Port to Disable the CAN Channel checkbox in the block mask is selected. Use this port to check whether the channel is enabled to interact on the bus or not.

Providing a logical "1" to this input signal stops the CAN channel from interacting on the bus. This channel will stop transmission and reception of new data with the next sample step. The transmit and receive buffer will be flushed.

This functionality can be used to simulate a channel disconnecting from the bus. Among other things, this means that the channel stops setting ACK bits. However, all the status indicators or counter values will remain until the channel is enabled again.

When the channel is in Bus-Off mode, the state can be recovered using this input port.

The channel will always start in an enabled state.

CAN bus load in percentage of the nominal occupation within the sample time of the Status block. If using a low sample time, the value can fluctuate significantly.

When the bus is overloaded or a cable is disconnected the signal may fluctuate between 0% and 100%.

Indicates if the CAN controller is in bus off mode as described within the CAN specification. This is set if either the internal CAN receive error counter or the CAN transmit error counter reaches the bus off limit of 255 errors.

This state can be recovered using the Disable CAN Channel input port.

Number of bus recoveries performed since simulation start. This counter will only reset at model restart.

Indicates an overrun on the transmit buffer of this channel. This shows if there was a potential data loss in the output signal flow. The buffer may overflow if the traffic on the CAN Write block is too large for the configured sample rate. The size of this buffer is 564 messages.

Indicates an overrun on the receive buffer of this channel. This shows if there was a potential data loss in the output signal flow. The buffer is only used if the CAN Read block is in FIFO mode. It may overflow if the bus-load is too high or because the receive buffer is not read out by a CAN Read block using a fast enough sample rate. The size of this buffer is 564 messages.

Indicates if the CAN controller has reached the bus warning limit as described within the CAN specification. This is set if either the internal CAN Receive Error Counter or the CAN Transmit Error Counter reaches the warning limit of 96 errors.

This ID defines the link to the corresponding Setup block

Selects the CAN channel with which this driver block communicates.

Check this parameter in order to enable the automatic Bus-Off Recovery.

If the channel is in Bus-Off state, as indicated by the Bus-Off Status output port, the channel will automatically try and recover from this state.

Enables an input port that can be used to disable the associated channel.

Defines the base sample time at which this driver block gets its sample hit. This parameter can also be set to -1 for inherited sample time. The units are in seconds.