| 摘要 |
A communication system (1000) is provided with a communication apparatus (100) and communication apparatuses (200, 300, 400, 500). The communication apparatus (100) is provided with a direct-current power source (110) and a transmitting unit (120) that transmits data through control of a current flowing through a current loop. The communication apparatuses (200, 300, 400, 500) are provided with a receiving unit (250) that receives the data by detecting the current flowing through the current loop. The communication apparatus (100) is provided with an adjustment unit (180) that adjusts the impedance between a signal line (520) and a shared line (530) in accordance with the number of the communication apparatuses (200, 300, 400, 500). |
