Operation control method of the wire saw

PROBLEM TO BE SOLVED: To maintain a cutting accuracy even in the cutting after the pause of a wire saw. SOLUTION: At the non-cutting time of a wire saw, as at least one standby operation is carried out, out of a standby operation for running a wire or a standby operation for circulating a processing liquid or a standby operation for regulating the temperature of the processing liquid, the deformation of a group roller can be prevented at the standby time of the wire saw, and the keeping state of the processing liquid can be maintained favorably and the next cutting accuracy can be maintained.