| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system capable of simplifying a system configuration resulting in a cost reduction.SOLUTION: When a master unit 10 determines that a communication with a follower unit 20 is not available based on a response/non-response to a communication signal transmitted to the follower unit 20 from a follower unit 20, the master unit 10 switches the output level for transmitting the communication signal to the follower unit 20 to an output level, which is different from the output level at a timing when non communication is made, during the communication with the follower unit 20 is available. When the output level which is switched by the master unit 10 continues for a certain period of time, the follower unit 20 resets.SELECTED DRAWING: Figure 1 |
