NUMERICAL CONTROLLER FOR REDUCING CONSUMED POWER IN NON-CUTTING STATE

A numerical controller looks ahead a machining program to detect consecutive non-cutting blocks. The numerical controller calculates first consumed power needed during an execution duration of the non-cutting blocks to shift equipment to a power saving state, operate the equipment in the power saving state, and restore the equipment to a state before the shifting to the power saving state, and second consumed power needed during the execution duration of the non-cutting blocks to operate the equipment without shifting the equipment to the power saving state. When a result of the calculation indicates that the first consumed power is lower than the second consumed power, the numerical controller creates an equipment operation variation pattern according to which the equipment is to be shifted to the power saving state, operated in the power saving state, and then restored to the state before the shifting to the power saving state.