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US 8,595,400 B2Granted
Programmable controller using master-slave communication
AssigneeOMRON Corporation
InventorSeiji Mizutani
Life of this patent
Estimating the term…
Abstract
A programmable controller includes a master unit and a plurality of slave units connected to a system bus in a daisy chain. The master unit transmits a batch of transmission frames addressed to different slave units consecutively a predetermined plurality of times, without waiting to receive the response from the slave units. Thus, the transmission frames can be transmitted reliably.
Claims15
A programmable controller, comprising:
- a master unit and a plurality of slave units connected to a system bus,
- wherein the slave units are configured to return a response when the slave units have properly received a transmission frame sent by the master unit, and
- wherein the master unit is configured to transmit a batch of transmission frames addressed to different slave units consecutively a predetermined plurality of times, without waiting to receive the response from the slave units.
A master communication circuit serving as a master in a master-slave communication, comprising:
- a sender controller that sends a transmission frame addressed to a slave communication circuit;
- a receiver controller that receives a response from the slave communication circuit;
- and
- a communication controller that causes the sender controller to transmit a batch of transmission frames addressed to different slave communication circuits consecutively a predetermined plurality of times without waiting to receive the response from the slave communication circuits by the receiver controller.
1 more element
Dependencies are inferred from the claim text.