Omron Corporation

Takamasa Mioki

Masaichi Takai

Mizuki Mori

An abnormality of a computer is diagnosed accurately. A CPU writes an event log into an event log part. When a WDT detects an abnormality of the CPU, a backup part writes backup data into a backup data part. The backup part associates the event log with the backup data and adds a number of starts of the CPU to the backup data.

Computer and control method thereof for diagnosing abnormality

A control unit included in a PLC generates power-cut retaining information to be retained at a power cut, and stores the generated power-cut retaining information into a main memory. The control unit includes a file system unit for reading and writing target information from and into a nonvolatile memory. When the file system unit receives a power cut notification indicating a cut of power fed while reading or writing target information from or into a nonvolatile memory, the file system unit stops the reading or writing process, and writes the power-cut retaining information stored in the main memory into the nonvolatile memory using power fed from the auxiliary power supply.

Controller, control method, and program for power cut state restoration

A program is simply stored in a storage unit of a programmable controller. A substrate of the programmable controller includes an interface unit to which an external device having input and output terminals is detachably attached and a first storage unit. The interface unit includes a processor circuit and connector terminals to which the input and output terminals of the external device are able to be connected. The method includes: forming a predetermined circuit by connecting the input and output terminals of the external device to the connector terminals; reading a program or data of the programmable controller from a second storage unit in which the program or data is stored and storing the read program or data in the first storage unit; and causing the processor circuit to start the step of reading and storing the program or data when the predetermined circuit has been formed.

Growing community of inventors

Moriyama, Japan

Takamasa Mioki