Abstract: The present invention includes a drawing data generating unit, a variation pattern that varies at regular intervals to be displayed, a display unit that displays drawing data, and a comparator that compares whether input signals are coincident, and the drawing data generating unit includes a receiver that receives data from a higher-level device, a drawing control unit that converts the data received from the higher-level device to drawing data, and a drawing memory that stores the drawing data. The drawing data generating unit and the variation pattern are redundantly configured, and the variation pattern is input to the drawing data generating unit. One output signal of the drawing data generating unit regarding drawing data including the variation pattern is transmitted to the display unit, a plurality of output signals from the drawing data generating unit are input to the comparator, and the comparator outputs a comparison result as a detection signal outside.

Abstract: The present invention includes a drawing data generating unit, a variation pattern that varies at regular intervals to be displayed, a display unit that displays drawing data, and a comparator that compares whether input signals are coincident, and the drawing data generating unit includes a receiver that receives data from a higher-level device, a drawing control unit that converts the data received from the higher-level device to drawing data, and a drawing memory that stores the drawing data. The drawing data generating unit and the variation pattern are redundantly configured, and the variation pattern is input to the drawing data generating unit. One output signal of the drawing data generating unit regarding drawing data including the variation pattern is transmitted to the display unit, a plurality of output signals from the drawing data generating unit are input to the comparator, and the comparator outputs a comparison result as a detection signal outside.

Abstract: The invention includes conducting efficiently a functional verification test of a rod control and information system as a whole and of control rod on-site transmission devices only, the system performing and monitoring insertion and extraction of control rods to and from a nuclear reactor. Each on-site transmission device in the system includes a control rod drive controller and multiple control rod individual controllers each incorporating beforehand a software simulator that calculates position change of the control rods corresponding to a control rod drive command input to the individual controller via the control rod drive controller. During the test, a software simulator activation signal is issued to activate the software simulator calculating a simulated control rod position and outputting the position as a control rod position signal for use in determining the integrity of the on-site transmission devices and that of the system.