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US 2015/0277411 A1Published application
Process control system and process control method
AssigneeYokogawa Electric Corporation
InventorsHiroaki NAKAJIMA, Kuniharu AKABANE, Shunsuke HAYASHI
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Abstract
A process control system includes an I/O module configured to be connected to a field device which is installed in a plant in which an industrial process is controlled, the I/O module autonomously transmitting data received from the field device, and a higher-level device that comprises a memory which temporarily stores the data autonomously transmitted from the I/O module, the higher-level device reading the data stored in the memory at a predetermined period.
Claims20
A process control system comprising:
- an I/O module that is connected to a field device which is installed in a plant in which an industrial process is controlled, the I/O module autonomously transmitting data received from the field device;
- and
- a higher-level device that comprises a memory which temporarily stores the data autonomously transmitted from the I/O module, the higher-level device reading the data stored in the memory at a predetermined period, and the higher-level device controlling the field device.
A process control method comprising:
- receiving, by an I/O module, data from a field device which is installed in a plant in which an industrial process is controlled, the I/O module being connected to the field device;
- autonomously transmitting, by an I/O module, the data received from the field device;
- temporarily storing, by a memory, the data autonomously transmitted from the I/O module;
- reading, by a higher-level device, the data stored in the memory at a predetermined period, the memory being disposed in the higher-level device;
- and
- controlling, by the higher-level device, the field device in accordance with the data read from the memory.
3 more elements
Dependencies are inferred from the claim text.