Patent ID: 11954054
Assignee: TOSHIBA CARRIER CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC G  H  F | IPC G  H

Claim 2:
3. A slave unit used for a communication system, comprising:
a resistance;
a memory that stores termination resistance setting information indicating whether the slave unit itself is a target to which a termination resistance is to be set; and
a switching circuit that electrically switches between connection and non-connection of the resistance to the communication line, wherein
the slave unit is connected to, through a communication line, a master unit that sets a communication rate of communication performed with a plurality of slave units including a slave unit to which a termination resistance is normally set 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 is restored, and switches setting of the master unit itself to the high baud rate,
the slave unit includes a slave communication control unit that normally sets a communication rate of communication preformed with the master unit to the high baud rate, switches the high baud rate to the 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 an instruction for switching the low baud rate to the high baud rate from the master unit, and
the slave communication control unit switches between connection and non-connection of the resistance to the communication line by the switching circuit based on the termination resistance setting information stored in the memory.