Omron Corporation

Takamasa Ueda

Yasuo Muneta

Koji Yaoita

Yuji Suzuki

Shigeyuki Eguchi

Keisaku Kikuchi

Hiromu Suganuma

Ryosuke Fujimura

Asahi Matsui

Yukio Iname

Nobuyuki Takuma

Tatsuya Kojima

Yoshimi Niwa

Yoshitaka Takeuchi

Katsushige Ohnuki

Yuji Ikeo

Katsuyuki Kawamata

Kazunari Miyake

Toru Murata

Makoto Okuno

The communication master repeats transmission of first information indicating a counter value of a synchronization counter of the communication master to the one or more communication slaves through a network. Each of the one or more communication slaves updates the counter value of the synchronization counter of each of the one or more communication slaves based on the received first information upon receiving the first information from the communication master. The communication master manages a total number of pieces of the first information transmitted for each of the one or more communication slaves, and estimates synchronization accuracy with respect to the communication master for each communication slave based on a number of transmissions of the first information for each communication slave.

Control system, communication control method of control system, and control device

A relay apparatus is provided to achieve high-speed control, while suppressing costs for communication with a plurality of devices, by notifying additional information of the devices to a master apparatus and increasing the efficiency of transmission/reception of signals among the master apparatus and the devices. The relay apparatus communicates with a plurality of devices through a single device communication port. The relay apparatus receives additional information from each of the plurality of devices; and transmits/receives signals in units of groups to which each of the plurality of devices belongs.

Slave apparatus, control method of slave apparatus, master-slave control system, and recording medium that records information processing program

Provided is a control system, comprising: a processing unit which executes a user program; one or a plurality of function units; one or a plurality of communication units which relay data between the processing unit and the one or the plurality of function units; and a reflection means which, when in the user program a variable is designated which has been associated with any of the data which the function units retain and which denotes the validity of the data, reflects, as the value which the variable denotes, a result of having aggregated states of each of the communication units which are present upon a transmission path from the function units which retain the designated data to the processing unit.

Control system, control device and control program for verifying soundness of data on a transmission path

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 safety control system that can realize comprehensive safety control for a manufacturing site is provided. A safety control system includes an arithmetic operation processing unit, a data storing unit that stores safety input/output data, and a plurality of communication processing units that exchange safety input/output data with a device that is a connection destination. Each of the plurality of communication processing units, independently from processes of the other communication processing units, periodically transmits safety output data for a target device stored in the data storing unit to the target device and writes safety input data from the target device into the data storing unit in accordance with a connection setting set in advance for each of the communication processing units.

Safety control system and safety control unit

A control system synchronizes input timing and output timing between functional units, while achieving the contradictory aspect of shortening the communication cycle of data frames transferred on a network. An information processing apparatus calculates parameters for the functional units included in a slave device in accordance with a mode selected from a plurality of available modes. The modes include a first mode in which timing to obtain a status value from the control target and timing to update an output value for the control target are synchronized between all the functional units included in the slave device, and a second mode in which the timing to obtain a status value from the control target and the timing to update an output value for the control target are synchronized between specific functional units included in the slave device.

Information processing apparatus, information processing program, and information processing method

The convenience of a design of a system is improved by making it easier to verify consumed electric power when designing and constructing the system. An operation screen is displayed upon execution of on a PC for supporting the design of a control system. The configuration of a control system can be controlled in an editing region, and unit images representing an I/O unit are connected in order to a unit image representing a communication coupler. A power supply unit can be inserted into this configuration. An icon indicates a shortage of electric power to the units downstream of the unit indicated by a selected image. When a user mouses the pointer over the icon, the detailed meaning of the icon is displayed in a message. The designer is thus capable of easily verifying the position at which a power source supply unit should be added.

Information processing device and program

A controller sets the processing in accordance with an error that may occur in data. A controller for controlling a machine or a facility includes a storage unit, a diagnosis unit that diagnoses the presence of an error in data written in a memory space of the storage unit or data read from the memory space, and a processing unit that performs processing in accordance with a diagnosis result obtained by the diagnosis unit. The processing unit performs appropriate processing when an error is detected in data within a set range of the memory space in which the diagnosis unit is to be enabled.

Controller

A safety system according to one or more embodiments including a safety controller that executes a safety program. The safety system includes: a collection unit configured to collect an input value over a predetermined period, the input value being a value of an input signal selected previously in one or a plurality of input signals input to the safety controller; and a visualization unit configured to reproduce a behavior of the safety program over the predetermined period based on the input value collected over the predetermined period, and to express visually an operating state of the safety program at an appointed point of time in the predetermined period.

Safety system, program, and method

At least some of plural control target devices are classified so as to belong to one of plural groups. A control device holds identification information specifying a belonging control target device and information about a behavior of a remaining control target device in detecting an abnormality of a control target device belonging to an identical group with respect to each group. The control device detects the abnormality of each of the plural control target devices based on data exchanged with the plural control target devices in executing a user program. When the abnormality is detected in one of the plural control target devices, the control device refers to the identification information to specify an abnormal group to which the control target device in which the abnormality is detected belongs, and the control device refers to the information about the behavior to control action of the abnormal group.

Controlling one or more devices upon detecting abnormal behavior

A control system easily adjusts devices. In a control system, an input unit included in a PLC system obtains actual sampling data. An output unit outputs an output signal based on output instruction data including a designated output timing and a designated output signal value. A task execution unit included in a controller repeatedly executes a task in a predetermined period. A sampling unit obtains variable sampling data. A same time-series data generation unit included in a development support apparatus generates same time-series data. A same time-series data display unit displays the same time-series data on the same time axis.

Control systems for setting sampling timing

A power supply controller system includes a power supply portion, arithmetic processing portions, and first and second monitoring circuits configured to monitor an integrity of power supply of the power supply portion. The first monitoring circuit instructs a second arithmetic processing portion to stop an operation thereof when a first watchdog timer is not reset for a predetermined period of time. The second monitoring circuit instructs a first arithmetic processing portion to stop an operation thereof when a second watchdog timer is not reset for a predetermined period of time. The first monitoring circuit further includes a third watchdog timer periodically reset by any one of the first arithmetic processing portion and the second arithmetic processing portion and instructs another arithmetic processing portion to stop an operation thereof when the third watchdog timer is not reset for a predetermined period of time.

Growing community of inventors

Kusatsu, Japan

Takamasa Ueda