| 摘要 |
<p>PURPOSE:To efficiently transmit data by synchronizing the output period of transmission data to a communication node with the cyclic period of a token. CONSTITUTION:When a cyclic token on a token bus Tb is received by the communication node N3, the communication node N3 outputs a synchronizing signal Sync to a controller U3 when the token number of the cyclic token coincides with the set token number ms=1 of the communication node N3. Then, at the fall time of the synchronizing signal Sync, the CPU 20 of the controller U3 reads detection data from a sensor 10 and outputs them to the communication node N3 and the communication node N3 transmits output data from the CPU of the controller U3 with the set token number (m)=3 of the communication node as a frame provided with the cyclic token and the data.</p> |
