Raptor:CAN Send Message

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Raptor™ CAN Send Message

Description

Each CAN tx message block not set to transmit periodically has a transmit queue. This queue is used to store messages if the transmit block is executed faster than the messages can be transmitted on the CAN bus. This will typically happen if the tx raw block is located in a for or while loop. If the queue is full when the block executes the oldest tx message will be overwritten.

The payload mask and value can be used to specify a particular value for certain bits in the message. All bits in the message with a 1 in the payload mask will be initialized to the value in the payload mask value. The contents of the message will then be bitwise or'd together.

Inputs

Input	Type	Description
ID	uint32	The CAN message ID
Signals		All the signals defined and enabled in the dbc file.

Parameters

Parameter	Type	Description
.dbc File		The dbc file being used. Click the Load button to select a new dbc file.
Message List		A list of messages defined in the dbc file, click on a message name to select a new message.
Signal List		A list of the signals defined in the message. Select a signal and press 'e' or 'd' to enable and disable signals within a message.
Label wires with channel names		Enable this to automatically name the wires on the input ports with the names of the signals
ID	Number	The ID used in the receive message filter. This is automatically set from the dbc file.
Mask	Number	The mask used in the receive message filter
Payload Mask Value	Vector	The value used with the payload filter for messages. This will be set automatically for messages with a mode signal.
Payload Mask	Vector	The mask used with the payload filter. This value will be set automatically for messages with a mode signal.
Msg Length	Number	The length of the message in bytes. This will be set automatically from the dbc file.
CAN Bus Name	String	The CAN bus to transmit the message on.
Queue Size	Number	Specifies the size of the receive queue.
Tx Period	Number	Specifies the period to transmit the CAN message. Set this value to 0 or a negative number to transmit the message only when the block executes.