24.2.1 Short and Enhanced Serial Message Formats

The J2716 specification defines two optional message formats: a Short Serial Message format and an Enhanced Serial Message format. Both of these message formats encode a longer serial message using two bits of the status nibble. A single message is encoded using multiple SENT data frames.

If the module is configured as a transmitter, the application must encode these serial messages by writing the appropriate value. If the module is configured as a receiver, the application must decode these serial messages by storing and analyzing the contents of the received status nibbles.