Control device and control method for controlling wire electrical discharge machine

A control device configured to control a wire electric discharge machine, the control device comprising:

• a machining control unit configured to:
• control the wire electric discharge machine to thereby carry out a first machining on a first workpiece;
• and in a case that an interruption request is made during the first machining, control the wire electric discharge machine to thereby interrupt the first machining, carry out a second machining on a second workpiece that differs from the first workpiece, and resume the first machining after the second machining has been completed;
• an acquisition unit configured to acquire a detection signal from a sensor configured to detect a rotational position of a roller configured to feed out a wire electrode of the wire electric discharge machine;
• a measurement unit configured to measure, based on the detection signal, a first consumption amount of the wire electrode consumed by the first machining from starting of the first machining until interruption of the first machining, and a second consumption amount of the wire electrode consumed by the first machining from resuming of the first machining until ending of the first machining;
• and
• a consumption amount calculation unit configured to calculate, using the first consumption amount and the second consumption amount, a first total consumption amount of the wire electrode consumed by the first machining.