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US 9,869,987 B2Granted
Field bus system with industrial measurement device having automonous control operation
AssigneeYokogawa Electric Corporation
InventorsHiroaki Nakajima, Kuniharu Akabane, Shunsuke Hayashi
Life of this patent
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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.
Claims16
A process control system comprising:
- an I/O module that is connected to a first field device which is installed in a plant in which an industrial process is controlled, the I/O module autonomously transmitting a process value and device management data received from the first field device, the process value being measured by the first field device;
- a signal relay that comprises a memory which temporarily stores the process value and the device management data autonomously transmitted from the I/O module;
- a controller configured to read the process value and the device management data stored in the memory of the signal relay at a predetermined period, the controller calculating a manipulation volume based on the process value, the controller transmitting the manipulation volume to the signal relay to control a second field device via the I/O module or another I/O module, the second field device being different from the first field device and connected to the I/O module or the another I/O module;
- and
- a device manager configured to obtain the device management data from the controller so as to determine a normality of the first field device.
2 more elements
A process control system comprising:
- an I/O module that is connected to a first field device which is installed in a plant in which an industrial process is controlled, the I/O module autonomously transmitting a process value and device management data received from the first field device, the process value being measured by the first field device;
- a controller that comprises a signal relay which comprises a memory, the memory temporarily storing the process value and the device management data autonomously transmitted from the I/O module, the controller reading the process value and the device management data stored in the memory of the signal relay at a predetermined period, the controller calculating a manipulation volume based on the process value to control a second field device via the I/O module or another I/O module, the second field device being different from the first field device and connected to the I/O module or the another I/O module;
- and
- a device manager configured to obtain the device management data from the controller so as to determine a normality of the first field device.
1 more element
A process control method comprising:
- receiving, by an I/O module, a process value and device management data from a first field device which is installed in a plant in which an industrial process is controlled, the process value being measured by the first field device, the I/O module being connected to the first field device;
- autonomously transmitting, by an I/O module, the process value and the device management data received from the first field device;
- temporarily storing, by a memory, the process value and the device management data autonomously transmitted from the I/O module;
- reading, by a controller, the process value and the device management data stored in the memory at a predetermined period, the memory being disposed in a signal relay;
- calculating, by the controller, a manipulation volume based on the process value;
- transmitting, by the controller, the manipulation volume to the signal relay to control a second field device via the I/O module or another I/O module, the second field device being different from the first field device and connected to the I/O module or the another I/O module;
- and
- obtaining, by a device manager, the device management data from the controller so as to determine a normality of the first field device.
5 more elements
Dependencies are inferred from the claim text.