Single-board microcomputer WEDM microcomputer controllers were produced earlier. At present, few WEDM manufacturers produce them. However, there are a large number of users who use them. Medium-wire wire-cutting is a technology-intensive product and belongs to precision processing equipment. Wire cutting operators must undergo rigorous training before using the machine tool and obtain a qualified operation certificate before they can work on the machine. In order to use the WEDM machine safely, reasonably and effectively, the cnc operator is required to abide by the following operating rules: (1) Have a full understanding of the performance and structure of wire feeding in self-use, and be able to master the operating procedures of the machine tool and comply with the safety production system: (2) Processing within the allowable specification range of the medium wire cutting, do not work with overweight or over-travel; (3) Always check the power cord of the middle wi