CODEWITHSUNDEEP
can-bus
topdawg_coder
topdawg_coder

Reputation: 13

Controller Area Network (CAN)

The standard message frame size for CAN is 108-bits (correct me if I am wrong about this... I am still learning about CAN)

Would I be able to send a message that has the sizes of 750 bytes, 2 bytes, or 510 bytes?

Since 108-bits = 13.50 bytes, I assume I could send the 2 bytes message, but how about the other message sizes?

Upvotes: 0

Views: 511

Answers (1)

David Steadman
David Steadman

Reputation: 23

CAN is a datalink protocol with a maximum payload of 8 bytes (64 bytes if you are using CAN-FD) per frame. If you need to send a message larger than that, you will need to make use of a transport protocol to split the message up into individual frames. Depending on the context, you can create your own ad-hoc protocol to do this, or you may look into a standard protocol such as CANopen or J1939 to provide transport services for you.

Upvotes: 2

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