A collector (110) included in a data collection apparatus (100) performs data collection to collect data from a PLC (604, 605). A controller (150) included in the data collection apparatus (100) determines whether the collector (110) is valid depending on whether the collector (110) at a time when an instruction to start the data collection is provided matches the collector (110) at a preset time, and causes the collector (110) to start the data collection in response to the collector (110) being valid.

An apparatus for controlling resonance suppression of a machine tool according to the present disclosure includes: a numerical control part; a main operation part; a PLC configured to execute a control command by means of communication with the numerical control part or the main operation part; a servo drive configured to execute the control command of the PLC; a servo motor part configured to operate under control of the servo drive; and a power conversion part electrically connected to the servo motor part and the servo drive and configured to apply electrical energy to the servo motor part, wherein the power conversion part controls resonance suppression in accordance with an operation of the servo motor part by adjusting electrical energy to be applied to the servo motor part based on a signal from the servo drive.

An apparatus for controlling resonance suppression of a machine tool according to the present disclosure includes: a numerical control part; a main operation part; a PLC configured to execute a control command by means of communication with the numerical control part or the main operation part; a servo drive configured to execute the control command of the PLC; a servo motor part configured to operate under control of the servo drive; and a power conversion part electrically connected to the servo motor part and the servo drive and configured to apply electrical energy to the servo motor part, wherein the power conversion part controls resonance suppression in accordance with an operation of the servo motor part by adjusting electrical energy to be applied to the servo motor part based on a signal from the servo drive.

A temperature control unit has an acquisition unit that acquires first information regarding driving and stopping of a heater and second information indicating whether or not to subject a time proportional output to an SSR to autonomous control and an SSR control unit that performs time proportional output of an instruction to drive or stop the heater, to the SSR.

A temperature control unit has an acquisition unit that acquires first information regarding driving and stopping of a heater and second information indicating whether or not to subject a time proportional output to an SSR to autonomous control and an SSR control unit that performs time proportional output of an instruction to drive or stop the heater, to the SSR.

The disclosure is provided to transmit a sensor value from a sensor to an external device with high efficiency. A sensor value of a sensor is acquired, basic data as time-series data is generated with reference to the acquired sensor value, differential data indicating a difference between the basic data and measurement data as time-series data corresponding to the sensor value acquired from the sensor is generated, and the differential data is transmitted to an external device through wireless communication.

The disclosure is provided to transmit a sensor value from a sensor to an external device with high efficiency. A sensor value of a sensor is acquired, basic data as time-series data is generated with reference to the acquired sensor value, differential data indicating a difference between the basic data and measurement data as time-series data corresponding to the sensor value acquired from the sensor is generated, and the differential data is transmitted to an external device through wireless communication.

A data control apparatus includes an analog signal input interface for receiving an analog signal from a first device, a communication interface for receiving correlation information indicating addresses of storage areas in a storage and conditional values associated with the storage areas, and a data controller for writing a digital value generated from the analog signal into one of the storage areas. The data controller includes a cam switch block for acquiring a reference signal generated from an input signal input from a second device and comparing a value of the reference signal with at least one of the conditional values, and a logger block for switching the storage area into which the digital value is written, on the basis of the comparison in the cam switch block, and writing the digital value into the storage area.

The present disclosure relates to a method for controlling a PLC using a PC program, wherein a source code of a PLC program includes a data section, the data section including data indicating services to be exposed by the PLC when running the PLC program, wherein a source code of the PC program is automatically generated using the data included in the data section and a PC program template, wherein the PLC is controlled using the PC program generated from the automatically generated source code of the PC program.

Embodiments include methods, network security computer systems, and computer program products for identifying deviant engineering modifications to programmable logic controllers. Aspects include: collecting, by a network traffic collection device of the network security computer, network traffic data from one or more engineering stations, and storing, by a network traffic data storage device, the network traffic data collected. Each of the engineering stations may include one or more programmable logic controllers. The method also may include: comparing, by a network traffic comparison module, the network traffic data collected, detecting, by an abnormality detection module, any deviant engineering modifications to the programmable logic controllers in the engineering stations; and generating, by an alarming and correction module, one or more reports for the deviant engineering modifications to programmable logic controllers. The alarming and correction module may generate one or more alarms and block any network traffic associated with the deviant engineering modifications.