| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology capable of, even when a user program operates, changing execution conditions for executing a program from the user program, and improving the convenience of a user thereby in a controller for controlling object equipment.SOLUTION: A controller such as a PLC stores a task execution condition management table 242 indicating the execution conditions of a task, and periodically executes a program in accordance with the execution conditions of the task. The controller provides an instruction for setting for changing the execution conditions of the task. The user includes the instruction for setting in a user program by a support device or the like. The controller executes an instruction to change the execution conditions of the task such as the priority of each task and the period of the task included in the user program to update a task execution condition management table 242 about a task concerning the instruction, and executes the program in accordance with the execution conditions of the task after update. |
