Safety control system
AssigneeYokogawa Electric Corporation
InventorSatoru Oosako
Life of this patent
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Abstract
A safety control system includes a plurality of safety control stations connected to a control bus to communicate with each other and with a distributed control system including a plurality of control stations connected to the control bus, wherein each of the plurality of safety control stations has an interface through which each of the plurality of safety control stations is connected to the control bus for transmitting own data of each of the plurality of safety control stations to all other safety control stations by broadcasting at a fixed cycle via the control bus and for receiving by each safety control station transmitted data from all other safety control stations, and wherein the interface implements a safety layer used to generate and diagnose safety information.
Claims10
A safety control system, comprising:
- a plurality of safety control stations connected to a control bus to communicate with each other and with a distributed control system including a plurality of control stations connected to said control bus,
- wherein each of the plurality of safety control stations has an interface through which each of the plurality of safety control stations is connected to the control bus for transmitting own data of each of the plurality of safety control stations to all other safety control stations by broadcasting at a fixed cycle via the control bus and for receiving by each safety control station transmitted data from all other safety control stations, and
- wherein said interface implements a safety layer used to generate and diagnose safety information.
A method for safety control in a system including a plurality of safety control stations connected to a control bus to communicate with each other and with a distributed control system including a plurality of control stations connected to the control bus, said method comprising the steps of:
- transmitting own data of each of the plurality of safety control stations to all other safety control stations by broadcasting at a fixed cycle through an interface by which each of the plurality of safety control stations is connected to the control bus;
- receiving by each of the plurality of safety control stations transmitted data from all other safety control;
- and
- generating and diagnosing safety information by a safety layer of said interface.
Dependencies are inferred from the claim text.