COMMUNICATION SYSTEM, MASTER DEVICE USED IN COMMUNICATION SYSTEM, SLAVE DEVICE, AND COMMUNICATION METHOD

• Main Author: KOMAZAKI Nariya
• Format: Patent
• Language: English; French; German
• Published: 13.09.2023
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; TRANSMISSION; VENTILATING; WEAPONS

A communication system (1) includes a master unit (10); and a plurality of slave units (20) including a slave unit to which a termination resistance is set, the plurality of slave units (20) being connected to the master unit (10) via a communication line. In the communication system (1), the master unit includes a master communication control unit (112) that normally sets a communication rate of communication performed with the plurality of slave units to a high baud rate, switches the high baud rate to a low baud rate after detecting that communication with the slave unit to which the termination resistance is set is disabled, transmits an instruction for switching the low baud rate to the high baud rate to the plurality of slave units after detecting that the communication with the slave unit to which the termination resistance is set is restored, and switches setting of the master unit itself to the high baud rate. The plurality of slave units includes a slave communication control unit (214) that normally sets a communication rate of communication performed with the master unit to a high baud rate, switches the high baud rate to a low baud rate after detecting that the communication with the master unit is disabled, and switches the low baud rate to the high baud rate after receiving, from the master unit, an instruction for switching the low baud rate to the high baud rate.