An information processing device collects information on an operating state of a communication system formed of a master device that manages communication over a network and at least one slave device connected to the network and capable of performing communication as instructed by the master device. The master device and the slave device record communication log entries regarding time information and a communication state in accordance with communication processing. The information processing device includes an acquiring section that acquires communication log entries from at least one of the master device and the slave device, a log entry rearranging section that rearranges the acquired communication log entries based on the time information, and a log entry extracting section that extracts, out of the rearranged communication log entries, any communication log entry recorded within a predetermined period of time from occurrence of a communication log entry including communication abnormality information.

A device is easily exchanged without changing a program of a controller. A device communication management unit generates digital input data that stores only ON/OFF information of a device in accordance with a copy setting information table set by a user.

A multi-farm wind power dispatch management system is provided which includes wind turbine dispatch controllers for controlling wind power dispatch of respective wind farm components and wind farm dispatch management systems for receiving respective wind farm component operating parameters and generating respective farm-level operating parameters. The system also includes group dispatch management systems for receiving the farm-level operating parameters and generating respective group level operating parameters. The system also includes a master dispatch management system for receiving the group-level operating parameters; computing a real time output power generated by the wind farm components; determining a difference between the real time output power and a committed output power; and generating reference commands, based on the difference, for controlling at least one of, the wind farm component operating parameters, the farm-level operating parameters, the group level operating parameters, or combinations thereof to reduce the difference and dispatch the committed output power.

A method is provided for setting up an on-board charger in an electrically driven vehicle with the following features: a proxy resistor of a charging socket of the vehicle is queried (44, 68); if the proxy resistor is present (46), a master configuration (48, 50, 52) of the on-board charger is carried out; and if the proxy resistor is not present (70), a slave configuration (72, 74, 76) of the on-board charger is carried out.

A device includes a master device, a set of slave devices and a bus. The master device is configured to transmit first messages carrying a set of operation data message portions indicative of operations for implementation by slave devices of the set of slave devices, and second messages addressed to slave devices in the set of slave devices. The second messages convey identifiers identifying respective ones of the slave devices to which the second messages are addressed requesting respective reactions towards the master device within respective expected reaction intervals. The slave devices are configured to receive the first messages transmitted from the master device, read respective operation data message portions in the set of operation data message portions, implement respective operations as a function of the respective operation data message portions read, and receive the second messages transmitted from the master device.

A PLC according to an embodiment of the present invention is disclosed. The PLC according to an embodiment of the present invention comprises: a master unit; and a plurality of interface units which access the master unit via a system bus. The master unit includes: a control unit for controlling input/output and processing commands; and a plurality of first RJ45 terminals for input/output of data, wherein a maximum of eight signals are arranged via each pin of each of the first RJ45 terminals. Each of the interface units includes a connection means for connecting a signal between a second RJ45 terminal for connecting a signal line from each of the first RJ45 terminals and an external device, wherein the interface units are configured to be expandable by the number of the first RJ45 terminals.

A programmable logic controller includes a state monitoring unit to monitor a state of another programmable logic controller that is a counterpart in the duplication, and a system switching control unit to transmit, to a slave device, status information including information indicating whether the programmable logic controller is a control system or a standby system, to receive the control data that is addressed to the programmable logic controller that is the control system and is transmitted from the slave device in a case where the programmable logic controller is the control system, and to switch the programmable logic controller to the control system when hindrance in the another programmable logic controller is detected in a case where the programmable logic controller is the standby system.

Disclosed is a message processing unit provided in a PLC system including a master and a plurality of slaves. The message processing unit is provided to each of the slaves and includes a first filter configured to receive a message transmitted from the master and to determine whether the message is a broadcast message, a second filter configured to receive the message delivered from the first filter and to determine whether the message is a message-to-be-processed, and a processor configured to process the message he delivered from the first filter or the second filter.

A settings information generation device, for reducing the number of settings steps pertaining to a device in a superordinate device that communicates with a slave device to which the device is connected, includes: a selection unit for accepting a selection of a device to be connected; an acquisition unit for acquiring operational settings information including the input/output data length of the selected device; and a generation unit for generating, on the basis of the operational settings information, superordinate device settings information for setting a storage region for storing data exchanged with the device by a controller via a device management unit.

A control system includes a support device used for developing a user program to be executed on a controller, and a display device that provides a supervisory control screen by referring to information held by the controller. The support device extracts a relationship between an output signal and one or more input signals defined by the user program and generates input-output correspondence information, and transmits the input-output correspondence information or screen data reflecting the input-output correspondence information to the display device. The display device provides, on the basis of the input-output correspondence information or the screen data reflecting the input-output correspondence information, the supervisory control screen showing the current value of a selected output signal and the current value of one or more input signals associated with the output signal by referring to the values of input and output signals held by the controller.