 To encode a 0 bit, A>B for the first half of the bit time, and A

This pattern is followed by up to 256 16-bit data frames.Each data frame consists of a start bit of 1, an 8-bit data field, a 3-bit station address, and an even parity bit (which includes the start bit, so it equivalent to odd parity over the data and address fields only).This is then followed by three or more fill bits of 0.