General numerical control system based on full digital ring bus

Abstract

The invention discloses an universal control system based on digital ring bus, including master equipment and slave equipment; the main equipment includes the PC (1) with digital control software and the bus controller unit (2); the slave equipment includes digital bus servo drive (3) and the PLC, and main equipment connecting with 1-24 slave equipments in serial which back to the main equipment thereby constituting a closed loop, and between the main equipment and the slave equipment transmitting data through the link connecting with physical layer and transmission media; among them, the bus controller (2) is slot structure, and connects with the motherboard based on X86 architecture through the bus interface on the motherboard, and communicates with the X86CPU on the motherboard. The invention relies on the method of industrial control motherboard plus bus controller slot, in order to improve the system expanding performance.

Description

technical field [0001] The invention relates to an all-digital bus type numerical control system, more specifically, relates to the setting method of the bus controller in the ring full-digital bus type numerical control system. Background technique [0002] The architecture of traditional CNC machine tools is determined by the form of transmitted data. The following types can be seen in the market: analog data (as shown in Figure 1), digital pulse type (as shown in Figure 2), and bus type (as shown in Figure 3). Each of these three structures has its own characteristics. At present, in the domestic market, most of the analog quantities transmit data. This structure of transmitting speed data with pulse commands is now common in low-end CNC systems, and the high-end ones are already in the analog and digital bus market. [0003] In the two numerical control structures of pulse type and analog quantity transmission data, there is a structure called CNC (numerical control) c...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the era and hardware conditions at that time, these motherboards integrated with bus controllers usually use multi-CPU interfaces, which is relatively wasteful of resources and complex in structure.

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