| 摘要 |
PROBLEM TO BE SOLVED: To immediately respond to abnormality generated in a slave without requiring the slave to identify whether a pulse transmitted from a master is a pulse at synchronous timing or that for correction information, even when the master is configured so as to transmit pulses only.SOLUTION: A slave 3 to 5, when having detected abnormality, transmits a correction request to the side of a master 2 to receive correction information from the side of the master 2; and executes correction for resolving the abnormality according to the received correction information. When a slave 3, 4 other than the terminal slave has detected abnormality, the slave disconnects communication with another slave following the slave. Thereby, it is made to be unnecessary for the other slave following the slave 3, 4 which is other than the terminal slave and has detected the abnormality to identify whether a pulse transmitted from the master 2 is a pulse at synchronous timing or that for correction information. |
