Abstract: A debug support program causes a computer to execute a step of extracting a set of variables having a dependency relation from a plurality of variables written in a plurality of process blocks that are included in a sequence program and each describe a process per device, that is to say, a process per slave device; a step of collecting log information recording information regarding input of a value to each of the plurality of variables written in the process blocks; a step of correcting an extraction result regarding the dependency relation on the basis of contents of the collected log information; and a step of presenting a corrected extraction result.

Abstract: A debug support program causes a computer to execute a step of extracting a set of variables having a dependency relation from a plurality of variables written in a plurality of process blocks that are included in a sequence program and each describe a process per device, that is to say, a process per slave device; a step of collecting log information recording information regarding input of a value to each of the plurality of variables written in the process blocks; a step of correcting an extraction result regarding the dependency relation on the basis of contents of the collected log information; and a step of presenting a corrected extraction result.

Abstract: A display apparatus that displays log data which indicates when the log data deviates from a normal state and a deviation degree is provided. The display apparatus comprises: a memory to store prediction data including a signal value of a prediction value of the log data and accuracy degree of the prediction value, and a signal value of an actual measurement value of the log data; a control unit to generate a display screen on which a prediction value area indicating an area of the log data in normal state is depicted based on the prediction data and on which a signal wavelength of the signal value of the actual measurement value is depicted based on the signal value of the actual measurement value; and a display unit to display the display screen.

Abstract: An unsteadiness detection device (30) is provided which is capable of detecting the operation state of facilities using binary digital signals, the unsteadiness detection device including: a model generation unit (313) to generate a normal model for determining operation states of a plurality of facilities (11) on the basis of operation data which are binary digital signals obtained from the facilities (11) in their steady operation states; an expectation value calculation unit (315) to calculate an expectation value of operation data by applying the normal model to past operation data of the facilities (11); and an unsteadiness detection unit (316) to detect whether or not an operation state of one of the facilities (11) is unsteady by comparing the expectation value of the operation data and a measured value of the operation data.

Abstract: In a display control device (10), an acquisition unit (21) acquires a value of a signal outputted from an apparatus (60) during execution of a control program (52) which controls the apparatus (60). A control unit (22) controls a display device (30) to display a code of the control program (52) on a screen (54), and to display the value of the signal acquired by the acquisition unit (21), on a portion in the code of the control program (52) which corresponds to the signal, in a format that enables distinction of a state of the apparatus (60) of the time the value of the signal is outputted.

Abstract: A display apparatus (4) displays log data having at least one of input data to a device (1) or output data from the device (1), the log data being a binary digital signal. The display apparatus comprises: a memory (43) to store prediction data including a signal value of a prediction value of the log data and accuracy degree of the prediction value, and a signal value of an actual measurement value of the log data; a control unit (41) to generate a display screen on which a prediction value area indicating an area of the log data in normal state is depicted based on the prediction data and on which a signal wavelength of the signal value of the actual measurement value is depicted based on the signal value of the actual measurement value; and a display unit (46) to display the display screen. Thereby, the display apparatus (4) is provided, which can display that the log data deviates from the normal state and deviation degree, when the log data is in an anomalous state.

Abstract: An unsteadiness detection device (30) is provided which is capable of detecting the operation state of facilities using binary digital signals, the unsteadiness detection device including: a model generation unit (313) to generate a normal model for determining operation states of a plurality of facilities (11) on the basis of operation data which are binary digital signals obtained from the facilities (11) in their steady operation states; an expectation value calculation unit (315) to calculate an expectation value of operation data by applying the normal model to past operation data of the facilities (11); and an unsteadiness detection unit (316) to detect whether or not an operation state of one of the facilities (11) is unsteady by comparing the expectation value of the operation data and a measured value of the operation data.

Abstract: In a display control device (10), an acquisition unit (21) acquires a value of a signal outputted from an apparatus (60) during execution of a control program (52) which controls the apparatus (60). A control unit (22) controls a display device (30) to display a code of the control program (52) on a screen (54), and to display the value of the signal acquired by the acquisition unit (21), on a portion in the code of the control program (52) which corresponds to the signal, in a format that enables distinction of a state of the apparatus (60) of the time the value of the signal is outputted.