PURPOSE: To prevent wastefullness by asynchronism by outputting timing signals from a reference clock pulse to plural devices and comparing the time-up signals with the admission signals from the calculator to stop all the control in case of incompleted conditions.
CONSTITUTION: A generalizing controller 11 controls the plant 12 by the reference clock in a timing synchronous controller 13 through each controller 1WN. A signal 01 is inputted from the controller into the synchronous controller 13; when a signal A from the calculator of the generalizing controller 11 is already there, a signal 11 is outputted; a signal T1 is immediately outputted as shown in the figure; the timing signals T2WT4 are outputted in successive delayed order. The signal I1 actuates a timer 201. Even when the timer 201 is time up, but if a generalizing signal B is not yet there, the signal I1' is not outputted; the following sequence is stopped and a signal I2' is outputted. When the signal I2' is outputted, a stop signal 800 is outputted in each controller 1WN, and at the same time stops the controller immediately, thereby allowing prevention of wastefulness of each equipment due to asynchronism.
IBA DAIZOU
MATSUKI TSUTOMU
