Abstract: According to one embodiment, control program management device includes storage, transmitting unit, updating unit, and retaining unit. The transmitting unit transmits control program to first device. The updating unit updates, when the control program is transmitted to the first device, permission so as to prohibit second device from editing the control program. The retaining unit retains, based on information transmitted from the first device when the control program is transmitted to the first device, unique information identifying the first device and the control program. The transmitting unit further transmits, to the first device, inquiry of whether the first device is editing the control program. The retaining unit deletes the unique information when the first device is not editing the control program. The updating unit releases the permission so as to permit the second device from editing the control program when the first device is not editing the control program.

Abstract: According to one embodiment, a plant control system includes a station mounting controllers thereon, an engineering device which manages programs, and a device which connects the controllers and the engineering device. The engineering device includes database which stores information on a first variable for allowing data to be shared among programs in each controller and a second variable for allowing data to be shared among programs in the station, the database management part, and a relocate management part which moves the program, and the relocate management part includes a designating module which designates an execution order of programs in a source controller, one or more programs to be moved, a destination controller, and the source controller, a module which moves the program as designated in the designating module, and a changing module which, when the program is moved, moves or copies the first and second variable used in the program.

Abstract: According to one embodiment, a plant control system includes a station mounting controllers thereon, an engineering device which manages programs, and a device which connects the controllers and the engineering device. The engineering device includes database which stores information on a first variable for allowing data to be shared among programs in each controller and a second variable for allowing data to be shared among programs in the station, the database management part, and a relocate management part which moves the program, and the relocate management part includes a designating module which designates an execution order of programs in a source controller, one or more programs to be moved, a destination controller, and the source controller, a module which moves the program as designated in the designating module, and a changing module which, when the program is moved, moves or copies the first and second variable used in the program.

Abstract: A debug system is provided with a control program compilation processing unit 11a that generates a control program for producing a first instruction for designating a connecting state on an input side of a connecting point with respect to the connecting point for connecting symbols, its connecting destination, a first internal variable, a second instruction for designating a connecting state on an output side of a connecting point and its connecting destination, and a second internal variable; and a wire force processing unit 11b that commands that the first instruction and the first variable are rewritten to a third instruction and a third variable or that either one of the first instruction and the first variable is rewritten to the third instruction or the third variable and commands that the second instruction and the second variable are rewritten to a fourth instruction and a fourth variable or that either one of the second instruction and the second variable is rewritten to the fourth instruction or the

Abstract: A trendgraph display system for displaying a trendgraph with the X axis being the time axis, representing time-serially data collected at a specified period in a display area. The system includes a cursor unit for displaying a cursorline movable in the direction of the X axis in the display area, a touch sensor unit for specifying by a touch a point on the X axis to which the cursorline is to be moved,a unit for moving the cursorline to the specified point, a unit for detecting a point of intersection where the cursorline intersects the displayed trendgraph in the display area, a unit for selecting a display scale and a scale alteration direction of the displayed trendgraph and a display control unit for displaying the trendgraph with the point of intersection at the center of the display area at the selected alteration direction at the selected display scale.

Abstract: In a process for forming a solid lubricating film on an iron-base substrate, an organic material having a vapor pressure of 10.sup.-4 Torr or less at room temperature is deposited on an iron-base alloy substrate in a vacuum atmosphere in a vacuum degree of 10.sup.-4 Torr or more, and simultaneously ions of a metal element having a chemical affinity to carbon is irradiated on the iron-base alloy substrate at a dose of 1.times.10.sup.16 ions/cm.sup.2 or more, the ions having an energy of 5 keV or more. Accordingly, the iron-base substrate is coated with a solid lubricating film which includes an atom mixture layer including carbide of the metal element and alloy of iron and the metal element and a carbon layer including amorphous carbon. Hence, the solid lubricating film has an excellent lubricating property as well as a high adhesion property to the iron-base substrate. Namely, the excellent lubricating property will last for a long period of time.

Abstract: The present invention relates to a refractory materials used in processing molten metals comprising combining at least one of the refractory materials selected from the group consisting of SiO.sub.2, Al.sub.2 O.sub.3, MgO, ZrO.sub.2 with an activatable element for labeling which has an activation cross section of over 1 barnand apparatus made from a plurality of differently labeled refractory components.