The prolonged 29-bit identifier (CAN 2.0B) is similar, however has an extended ID and is usually used within the j1939 protocol – heavy-duty autos. The subsequent one is the cyclic redundancy examine , which is a 16-bit checksum that detects errors and points within the transmitted data. The picture beneath exhibits a typical CAN body with an 11-bit identification, which is the kind utilized in most automobiles. Except for the larger ID, the expanded 29-bit identifier body is identical. High-priority data will get prioritized by ID, to get immediate bus entry – not interrupting different frames. When the CAN protocol was created, its objective was to allow fast communication between electronic gadgets and modules, whereas decreasing errors, weight, wiring, and costs.
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