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.

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.

Abstract: A process control system includes: a controller; at least one input and output module connected to the controller; and an allowable propagation delay value calculator in the controller, the allowable propagation delay value calculator being configured to calculate, based on the number of input and output modules connected to the controller, an allowable range for propagation delay time between the controller and the input and output module.

Abstract: A process control system includes: a controller; at least one input and output module connected to the controller; and an allowable propagation delay value calculator in the controller, the allowable propagation delay value calculator being configured to calculate, based on the number of input and output modules connected to the controller, an allowable range for propagation delay time between the controller and the input and output module.

Abstract: A sending part sends a data generated by a second device from the second device to a first device. A data collating part collates the data sent from the sending part with a data generated by the first device, and determines that it is abnormal when a mismatch between these data occurs. Thus, a data generated by the first device is collated with a data generated by the second device and when a mismatch between these data occurs, it is determined that it is abnormal, so that abnormality can be detected surely.

Abstract: An information processing apparatus comprises a first device and a second device of which each executes the same processing independently, a status acquiring part which acquires a status of the first device, and an event generating part which generates a common event according to the acquired status in the first device and the second device.

Abstract: An asynchronous communicating part executes an asynchronous communication between a first device and a second device. A first process executing part executes a processing in the first device by use of the asynchronous communication as a trigger. A second process executing part executes a processing in the second device by use of the asynchronous communication as a trigger. A trigger signal sending part sends a trigger signal from the first device to the second device. A response signal replying part replies a response signal from the second device to the first device when the second device receives the trigger signal. Thus, the first process executing part and the second process executing part execute the processing in the first device and the second device using the asynchronous communication as the trigger, so that the processing in the first device and the processing in the second device are synchronized.

Abstract: An anomaly detector detects anomaly of a first device. A second device reset part, in case that anomaly has been detected by the anomaly detector, resets a second device. A first device reset part, in case that anomaly has been detected by the anomaly detector, resets a first device. Further, a collating part collates data generated by the first device with data generated by the second device, and judges anomaly when these data are in disagreement with each other. A reset part, in case that the anomaly has been judged by the collating part, resets the second device.

Abstract: A sending part sends a data generated by a second device from the second device to a first device. A data collating part collates the data sent from the sending part with a data generated by the first device, and determines that it is abnormal when a mismatch between these data occurs. Thus, a data generated by the first device is collated with a data generated by the second device and when a mismatch between these data occurs, it is determined that it is abnormal, so that abnormality can be detected surely.