Multiple machine tool communication and USB standard multiple machine tools need to communicate, or the data conversion function is performed by the above method. After wiring the above control, the connection gate device is used to communicate with several machine tools; or by manual operation. The way to convert. There are several problems in this way: (1) Distance: Because the line directly connected through the parallel port does not exceed 100m in length, five types of twisted pairs can be used, but for multiple connections, the next connection cannot be made directly. It is connected by the station's connection relay. (2) Number of connected nodes: Since the electronic gate control is generally no more than eight, if the number is manually switched, the number is too large to cause confusion. (3) Program controllability: The electronic gate can only be controlled in one direction, and the corresponding specific connection is required when connecting. (4) Rate: The transmission rate of the telegraph head is only a few characters/second, and the optical motor head can generally reach several KBPS. (5) Cost: The general cost is relatively low. (6) Real-time: If there is no corresponding prompt for the transmission line or other reasons.
Since most of the single-chip microcomputers used in the domestic CNC wire cutting machine are relatively old-fashioned general-purpose chips, the interface used in actual use is also a telegraph head or an optical motor head, which is inconvenient in practical operation. Sex. As described in this paper, the molybdenum wire control and drive part of the original machine tool is closely combined with the current advanced computer hardware and software technology to construct a single computer multi-machine parallel control system. Not only can we make reasonable use of resources and low price, but also achieve the advantages of easy scalability and easy control. At present, the technology of USB has been in use since 1996, from the practical version of USB1.1 to the current version of 2.0, the technology is relatively mature, and the high version of the product has backward compatibility with the lower version. Therefore, by adopting this technology and carrying out corresponding software and hardware development, it is believed that the CNC wire-cutting machine tool that will make the wire is more competitive.
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