Patent ID: 11962425
Assignee: FANUC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A communication system in which a plurality of slave communication devices are connected in a daisy chain to a master communication device,
the master communication device including:
a generation unit that generates transmission data including one header and consecutive data for all slave communication devices, the consecutive data following the one header; and
a transmission unit that transmits the transmission data generated by the generation unit at a fastest cycle among communication cycles requested by the plurality of slave communication devices,
the plurality of slave communication devices including:
a storage unit that attaches information indicating reliability to data received from the master communication device and stores the same;
a comparison unit that compares reliability of data received later with the reliability of the data stored in the storage unit; and
a selection unit that selects the data stored in the storage unit in a case where the reliability of the data stored in the storage unit is higher than the reliability of the data received later by the comparison unit.