To prevent reset winding up.

Thus cascade controller is provided with a primary control system 10 and a secondary control system 30. When the characteristic of the operation terminal 6 of the primary control system 10 is an inverse operation, a limit deviation signal output means 19 in which either upper/lower limit values or a change rate limit value or both values are set, whether operation signals being the outputs of PID (proportional integration differentiation) control operation means (12 and 13) in the primary control system 10 exceed the upper/lower limit values and the change rate limit value or not is judged and a limit deviation signal is outputted when they exceed them is provided for the primary control system 10. The secondary control system 30 is provided with integration control means (35, 43 and 44) discriminating the code of the limit deviation signal with that of speed-type I control operation output in the PID control operation means (32 and 33) of the secondary control system 30 and stopping the integration operation of the PID control operation means 32 and 33 in the secondary control system 30 when they are same codes.