Yokogawa Electric Corporation

Atsushi Terayama

Hiroaki Nakajima

Noriko Kase

Kazushi Sakamoto

Kiyotaka Kozakai

Yukio Maniwa

Yoshie Morita

Itsuki Handa

Hiroyoshi Sekino

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.

Control apparatus, control method, and program

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.

Process control system

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.

Information processing apparatus and information processing method

Growing community of inventors

Tokyo, Japan

Atsushi Terayama