Master slave communication system and control method for master slave communication system
AssigneeCanon Kabushiki Kaisha
InventorKoichiro Ino
Life of this patent
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Abstract
A master slave communication system capable of reducing a manufacturing cost is provided. The mater slave communication system includes a master node and a plurality of slave nodes having the same initial address. A communication between the master node and one slave node among the plurality of slave nodes is established by using the initial address set as an address of the one slave node. The address of the one slave node is changed into another address which has been transmitted from the master node to the one slave node through the established communication and is different from the initial address.
Claims13
A master slave communication system, comprising:
- a plurality of slave devices, each of the plurality of slave devices including a register configured to store an initial address;
- and
- a controller including at least one processor and being configured to:
- supply an electric power to a first slave device among the plurality of slave devices;
- establish a communication between the controller and the first slave device based on the initial address under a state where the first slave device is supplied with the electric power and a second slave device, different from the first slave device, among the plurality of slave devices is supplied with no electric power;
- change, when the communication between the controller and the first slave device is established, the initial address stored in the register of the first slave device;
- and
- supply an electric power to the second slave device after the initial address stored in the register of the first slave device is changed.
A control method for a master slave communication system including a controller and a plurality of slave devices, each of the plurality of slave devices including a register configured to store an initial address, the control method comprising:
- supplying an electric power to a first slave device among the plurality of slave devices;
- establishing a communication between the controller and the first slave device based on the initial address under a state where the first slave device is supplied with the electric power and a second slave device, different from the first slave device, among the plurality of slave devices is supplied with no electric power;
- changing, when the communication between the controller and the first slave device is established, the initial address stored in the register of the first slave device;
- and
- supplying an electric power to the second slave device after the initial address stored in the register of the first slave device is changed.
Dependencies are inferred from the claim text.