A management system outputs at least one of a start-up start time and a warming start time of a plurality of machines. An input unit receives the input of a machining start time and the largest number of the machines. An estimation unit estimates a start-up period, a warming period, and a process period of each of the plurality of machines. A determination unit determines at least one of a start-up start time and a warming start time of each of the plurality of machines based on the machining start time, the largest number of the machines, the start-up period, the warming period, and the process period. A notification unit notifies at least one of the start-up start time and the warming start time.

A controller continues to operate in a stable manner after program modification. A controller repeatedly executes a task A and a task B in cycles. The controller includes a RAM and a task control program. The RAM stores a fixed time set longer than an actual execution time of the task A as an execution time for the task A. The task control program executes the tasks A and B, and executes the task A by using the fixed time.

A management system outputs at least one of a start-up start time and a warming start time of a plurality of machines. An input unit receives the input of a machining start time and the largest number of the machines. An estimation unit estimates a start-up period, a warming period, and a process period of each of the plurality of machines. A determination unit determines at least one of a start-up start time and a warming start time of each of the plurality of machines based on the machining start time, the largest number of the machines, the start-up period, the warming period, and the process period. A notification unit notifies at least one of the start-up start time and the warming start time.

A controller continues to operate in a stable manner after program modification. A controller repeatedly executes a task A and a task B in cycles. The controller includes a RAM and a task control program. The RAM stores a fixed time set longer than an actual execution time of the task A as an execution time for the task A. The task control program executes the tasks A and B, and executes the task A by using the fixed time.