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US 11,079,826 B2Granted
Control apparatus, control method, and program
AssigneeYokogawa Electric Corporation
InventorsYoshie Morita, Kazushi Sakamoto, Atsushi Terayama, Itsuki Handa
Life of this patent
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Abstract
A control apparatus characterized by including: a storage unit that stores operation management information; an application executing unit that transmits a signal for turning off the power source of a field instrument; a resetting unit that, based on the signal, instructs to suspend the power supply from the input/output modules; and an activating unit that instructs to resume the power supply from the input/output modules, based on an elapse of preset time during which the power supply from the input/output modules should be suspended.
Claims9
A control apparatus comprising:
- a storage unit that stores operation management information;
- an application executing unit that communicates with a field instrument installed in a plant via a plurality of input/output modules that are configured such that one of two of the plurality of input/output modules runs while the other one waits to make the input/output modules redundant, and transmits a signal for suspending power supply to the field instrument;
- and
- a resetting unit that, based on the signal, transmits an instruction to suspend power supply from the input/output modules, wherein
- based on reception of the signal, the resetting unit stores or updates a controlled state of the input/output modules stored in the operation management information at least either:
- at timing of transmission of the instruction to suspend the power supply, or at timing when operation for suspending the power supply to the field instrument is performed by a human interface station connected with the control apparatus via a network, the controlled state indicating whether the input/output modules are running or waiting.
3 more elements
A control method performed by a control apparatus which:
- is in a plant where a field instrument is installed;
- and has a storage unit that communicates with the field instrument via a plurality of input/output modules and stores operation management information, the control method for causing one of two of the plurality of input/output modules to run and the other one to wait, to make the input/output modules redundant, the method comprising:
- transmitting a signal for suspending power supply to the field instrument;
- transmitting, based on the signal, an instruction to suspend power supply from the input/output modules;
- storing or updating, based on reception of the signal, a controlled state of the input/output modules at least either:
- at timing of transmission of the instruction to suspend the power supply, or at timing when operation for suspending the power supply to the field instrument is performed by a human interface station connected with the control apparatus via a network, the controlled state indicating whether the input/output modules are running or waiting;
- transmitting, based on an elapse of preset time during which the power supply from the input/output modules should be suspended, an instruction to resume the power supply from the input/output modules;
- and
- storing or updating, based on reception of the instruction to resume, the controlled state of the input/output modules stored in the operation management information.
6 more elements
A non-transitory computer readable medium storing thereon a program that, when executed by a computer, causes the computer to function as a control apparatus which:
- is in a plant where a field instrument is installed;
- and has a storage unit that communicates with the field instrument via a plurality of input/output modules and stores operation management information, the control method for causing one of two of the plurality of input/output modules to run and the other one to wait, to make the input/output modules redundant by performing operations comprising:
- transmitting a signal for suspending power supply to the field instrument;
- transmitting, based on the signal, an instruction to suspend power supply from the input/output modules;
- storing or updating, based on reception of the signal, a controlled state of the input/output modules at least either:
- at timing of transmission of the instruction to suspend the power supply, or at timing when operation for suspending the power supply to the field instrument is performed by a human interface station connected with the control apparatus via a network, the controlled state indicating whether the input/output modules are running or waiting;
- transmitting, based on an elapse of preset time during which the power supply from the input/output modules should be suspended, an instruction to resume the power supply from the input/output modules;
- and
- storing or updating, based on reception of the instruction to resume, the controlled state of the input/output modules stored in the operation management information.
6 more elements
Dependencies are inferred from the claim text.