A programmable controller includes a command executing engine unit that performs a user program and performs a computing process and nonvolatile memory that stores the result of the computing process. The command executing engine unit transitions to a temporary stop state in which a new cycle of computing process is not performed and stores the result of a cycle of computing process in the nonvolatile memory when the cycle of computing process of the user program ends, and releases the temporary stop state and transmits the result of the cycle of computing process stored in the nonvolatile memory to a simulation device when a stop release instructing command instructing to release the temporary stop state is received from the simulation device.