Distributed type open system structure digital control system

Abstract

The invention relates to a distributed open system architecture numerical control system, which comprises a first industry PC computer, a second industry PC computer, and a multi-functional interface board. The first industry PC computer can be used in numerical control processing programs and used for inputting, editing, displaying and managing of a PLC program, and the first industry PC computer also can be used for editing the PLC program to generate and to send PLC ladder diagrams or C language programs. The second industry PC computer is connected with a supervisory computer by an Ethernet and can be used for processing the decoding, cutter compensation, speed processing, interpolation, and position control of the numerical processing program, and also used for receiving the PLC ladder diagrams or the C language programs. The multi-functional interface board is connected with a lower computer and can be used for running the PLC ladder diagrams or the C language programs, for inputting and outputting switch values, and for transmitting analog, pulse or numeral signals. The invention provides the distributed open system architecture numerical control system which ensures that the hardware assembly of the system is flexible and the allocation of the software functions is more reasonable, thereby more easily meeting the requirements of openness.

Description

technical field [0001] The invention relates to the field of numerical control, more specifically, to a numerical control system with a distributed open architecture. Background technique [0002] At present, the architecture of machine tool CNC system mainly includes the following types: [0003] 1. Closed CNC system. To adopt a dedicated chip, special development tools must be used, and it is difficult to expand, change and maintain functions. Such systems mainly include: FANUC 0 series, Mitsubishi (MITSUBISHI) M50, Siemens (Siemens) 810. [0004] 2. Open CNC system with "PC embedded in NC" structure. Numerical control system manufacturers are unwilling to give up the numerical control hardware and software technology accumulated over the years, but also want to use the products developed by the rich software resources of computers. Therefore, on the basis of the existing closed numerical control system, a PC is added for the display, editing and file management of the...

AI Technical Summary

Problems solved by technology

[0008] However, the numerical control systems of these structures, such as the first and second types, are not open enough, and the performance of the third and fourth types is difficult to improve

In particular, the PLC operation of the numerical control system requires a large amount of CPU resources, thus reducing the system performance, and some systems use an independent PLC, which increases the system cost and complexity

Modern open high-performance CNC system software is usually more complex and requires a high-performance hardware platform as the basis. With the further improvement of the performance of the CNC system, it is difficult for a system with a single CPU structure to meet this demand.

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