Bus controller for numerical control system of full digital ring bus

Abstract

The invention discloses a special equipment of digital loop bus control system - bus controller, its communication process being, the PC bus control module sends the data from the PC to the data buffer zone (61); the bus protocol analysis module (63) accesses to the data buffer zone (61), to obtain the data and translate them into the instructions accordance with bus protocol, and then through the physical layer control module (64) the physical layer interface (68) sends the data to the controlled equipment. The feedback information from the above controlled equipment passes the physical layer interface, the physical layer control module, the bus protocol analysis module in turn, and is sent to the data buffer zone; the PC uses the PC bus control module to access data buffer zone to obtain the data. In addition, the machine data storage area uses the said PC bus control module to exchange data with the PC. The bus controller of the invention has characteristics of high-speed, good real-time, good reliability, and good interface compatibility.

Description

technical field [0001] The invention relates to a bus controller used in a numerical control system, and more specifically, relates to a configuration structure of the internal units of a dedicated bus controller. 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 numerical control controller. A bus is ...

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.

Images