| 摘要 |
<p>A method for the serial communication by exchange of data frames between a transmitting node and at least one receiving node who are connected by means of a bus system is described, wherein the roles of transmitter and receiver are assigned to nodes for each data frame by the arbitration procedure defined in the CAN-Standard ISO 11898-1, wherein the exchanged data frames have a logical structure according to the CAN-Standard ISO 11898-1, wherein the data frames are composed of a sequence of bits, wherein the logical structure of the data frames includes a Start-Of-Frame-Bit, an Arbitration Field, a Control Field, a Data Field, a CRC Field, an Acknowledge Field and an End-Of-Frame Field, wherein the Data Field may have a length of zero bits, wherein each other Field contains at least two bits, wherein each bit has a bit time, wherein each bit time is divided into Time Segments (SYNC_SEG, PROP_SEG, PHASE_SEG1, PHASE_SEG2), wherein the bit-rate is defined by the reciprocal value of the bit time, wherein for at least one first predeterminable part of the exchanged data frames the bit-rate in that part lies below a maximum value of 1Mbit/s, wherein for at least one second predeterminable part of the exchanged data frames the bit-rate in that part lies higher than in the at least one first predeterminable part, characterized in that at least two different sets of values of the Time Segments (SYNC_SEG, PROP_SEG, PHASE_SEG1, PHASE_SEG2) are predeterminable for the at least two different parts of the exchanged data frames.</p> |
