Data transfer device, control device, setting device, and control method for data transfer device
AssigneeOMRON Corporation
InventorYoshimi Niwa
Life of this patent
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Abstract
The present invention suppresses the data size of a data frame to be transmitted to a control device at every control period even if oversampling is performed. A counter unit (10) compresses the data size of sampling data (Sd) indicating a second or subsequent count value (Ct) to the number of bits by which the maximum (Vmax) of a count value countable in one sampling processing can be represented.
Claims18
A data transfer device that stores a plurality of pieces of sampling data indicating respective measurement results in a plurality of sampling processes executed in one control period in one data frame and transmits the sampling data to a control device at each of the control period, the data transfer device comprising:
- an acquisition part that acquires the measurement results in the respective executed sampling processes;
- and
- a compression part that, in a case where a maximum of a change between the measurement results in two of the sampling processes executed consecutively at the one control period is determined in advance, compresses the measurement result in each of second and subsequent sampling processes among the plurality of the measurement results acquired by the acquisition part to the sampling data with a data size by which the maximum is able to be represented.
A control method for a data transfer device that stores a plurality of pieces of sampling data indicating respective measurement results in a plurality of sampling processes executed in one control period in one data frame and transmits the sampling data to a control device at each of the control period, the control method comprising:
- an acquisition step of acquiring the measurement results in the respective executed sampling processes;
- and
- a compression step of, in a case where a maximum of a change between the measurement results in two of the sampling processes executed consecutively at the one control period is determined in advance, compressing the measurement result in each of second and subsequent sampling processes among the plurality of the measurement results acquired in the acquisition step to the sampling data with a data size by which the maximum is able to be represented.
Dependencies are inferred from the claim text.