System in which plural controlled devices and main control device are connected via network
AssigneeCanon Kabushiki Kaisha
InventorYasuhiro Watanabe
Life of this patent
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Abstract
In a system, a plurality of controlled devices, including a first controlled device and a second controlled device, and a main control device configured to control the plurality of controlled devices are connected via a network. The main control device includes a communicator configured to transmit and receive a data frame including a plurality of data areas via the network in a predetermined cycle, and a setter configured to set a structure of the data frame. The setter has a function of setting the same data area in the data frame as a data area in which the first controlled device should write data and a data area from which the second controlled device should read data.
Claims21
A system comprising:
- a plurality of controlled devices including a first controlled device and a second controlled device;
- and
- a main control device connected to the plurality of controlled devices via a network and configured to control the plurality of controlled devices, the main control device including:
- a communicator configured to transmit and receive a data frame including a plurality of data areas via the network in a predetermined cycle;
- and
- a setter configured to set a structure of the data frame, wherein the setter includes a function of setting a same data area in the data frame where the first controlled device writes data and where the second controlled device reads data.
A system comprising:
- a main control device connected to a plurality of controlled devices, which includes a first controlled device and a second controlled device, via a network and configured to control the plurality of controlled devices, wherein the main control device includes:
- a communicator configured to communicate a data frame including a plurality of data areas via a network in a predetermined cycle;
- and
- a setter configured to set a structure of the data frame, wherein the setter-includes a function of setting a same data area in the data frame where the first controlled device writes data and where the second controlled device reads data.
A control method for a system including a plurality of controlled devices including a first controlled device and a second controlled device, and a main control device connected to the plurality of controlled devices via a network and configured to control the plurality of controlled devices, the method comprising:
- causing the main control device to communicate a data frame including a plurality of data areas via the network in a predetermined cycle;
- causing the main control device to set a structure of the data frame including setting a same data area in the data frame where the first controlled device writes data where the second controlled device reads data.
Dependencies are inferred from the claim text.