Omron Corporation

Tatsuya Kojima

Yoshihide Nishiyama

Shigeyuki Eguchi

Shinsuke Kawanoue

Koji Yaoita

Osamu Hamasaki

Katsushige Ohnuki

Takamasa Ueda

Takahiro Toku

Tetsushi Jakunen

Tomonori Shimamura

Katsuhige Ohnuki

A control device includes a main storage device that stores a user program and program packages in a nonvolatile manner; a main memory having a package management module arranged therein; and a processor. The package management module performs a deployment process for selecting, from the program packages, a package to be deployed based on a version of the user program, and arranging, from the package to be deployed, a version of a program compatible with the version of the user program in the main memory.

Control device and method for deployment of software

To read respective values as updated of a plurality of variables synchronization of which respective values is ensured while tasks are being carried out in a multi-tasking manner, a PLCreads respective values as updated of variables A to C in such a manner as to complete reading the respective values as updated of the variables A to C during a time period from (i) a time point of a start of a single instance of a cycle of a task which cycle is shortest to (ii) a time point of an end of the single instance of the cycle.

Control device, control method for control device, information processing program, and recording medium

A safety control unit includes: a memory; a computation control part; and an input and output unit for connecting the computation control part to a safety input device and an output device to be safely controlled. A system program includes a data refresh program for executing a data refresh of safety control data of the safety input device and the output device and the control data of the memory via the input and output unit. If the computation control part receives a change of a control program, the computation control part stops executing the control program. The computation control part executes the change of the control program while executing a part of the system program including the data refresh. The computation control part resumes executing the control program.

Safety control unit, safety control method, and safety control program

A control unit includes: a memory; a computation control part; and an input and output unit for connecting the computation control part to a device of an (FA) system. A system program includes a data refresh program for executing a data refresh of data of the device and the control data of the memory via the input and output unit. If the computation control part receives a change of a control program, the computation control part stops executing the control program. The computation control part executes the change of the control program while executing a part of the system program including the data refresh, and resumes executing the control program.

Control unit, data refresh method, and data refresh program

A controller allows easy synchronization between a plurality of control programs executed in parallel to control a plurality of motors. The control programs are executed cyclically in parallel in predetermined execution cycles. Timing data for synchronizing the execution timing of the control programs is transmitted and received between the control programs. After control programis executed, an axis variable to be referred to by the control programis copied from an execution area of the memory for the control programinto a buffer area for the control program

Controller

A controller, such as a PLC, stores a task execution condition management table that indicates execution conditions for tasks and executes programs periodically in accordance with the execution conditions for the tasks. The controller provides a setting instruction for modifying the execution conditions for the tasks. A user enters the setting instruction in a user program by using a support device, for example. The controller updates the task execution condition management table with regard to a task associated with the instruction by executing the instruction for modifying the execution conditions for the tasks, including priorities of the tasks and cycles of the tasks, contained in the user program, and executes the programs in accordance with the updated execution conditions for the tasks.

Controller to modify an execution condition during program execution

The system program includes, as an execution control process of the control program, an owner-side start process that starts execution of an owner-side control program; a copy process in which, when execution of the owner-side control program ends, a global variable that is rewritten by the owner-side control program is copied from a global variable area to a synchronous buffer corresponding to the global variable; and a referrer-side start process that starts execution of a referrer-side control program.

CPU of PLC, system program for PLC, and recording medium storing system program for PLC

A system program causes, as an execution preparation process for a control operation of a PLC, execution of a process for generating a reception buffer for storing received input data, and execution of a process for generating, for each input data referred to by a control program, an input synchronization buffer used by the control program as a reference target for the input data. The system program causes, as an execution control process for the control operation of the PLC, execution of an input copy process for copying the received input data from the reception buffer to the input synchronization buffer corresponding to the input data, and execution of a control program start process for starting execution of the control program.

Growing community of inventors

Kyoto, Japan

Tatsuya Kojima