Method for synchronizing kernel data of real-time system and non-real-time system of industrial Ethernet numerical control system

Abstract

The invention relates to a method for synchronizing kernel data of a real-time system and a non-real-time system of an industrial Ethernet numerical control system, comprising the following steps of: initializing buffer zones between the kernels of the real-time system and the non-real-time system; establishing a priority interrupt channel between the kernels of the real-time system and the non-real-time system; and carrying out data synchronization between the kernels of the real-time system and the non-real-time system, wherein initializing the buffer zones between the kernels of the real-time system and the non-real-time system comprises steps that a motion control program in the kernel of the real-time system applies for two buffer zones from the kernel of the real-time system, and the two buffer zones are respectively defined as a transmitting buffer zone and a receiving buffer zone; and an industrial Ethernet driving program in the kernel of the non-real-time system applies for using the two buffer zones from the kernel of the non-real-time system to directly obtain head pointers of the two buffer zones. The method can accomplish synchronization operation by only needing to transmit one virtual interrupt to the kernel of the non-real-time system in each motion period, and has very simple programming and strong instantaneity.

Description

technical field [0001] The invention relates to a numerical control system with an industrial Ethernet communication interface, in particular to a method for synchronizing real-time and non-real-time system core data of the industrial Ethernet numerical control system. Background technique [0002] At present, the latest fieldbus technology adopted in the numerical control system has the following characteristics: (1) openness of the system; (2) interoperability and interoperability; (3) intelligent control; (4) complete distribution of system structure ; (5) Adaptability to the site environment. Due to the above characteristics, a lot of research has been carried out at home and abroad, and many field bus standards have been formed, such as: Profibus, SERCOS, Foundation Bus, Industrial Ethernet, etc. Compared with other industrial fieldbus technologies, industrial Ethernet is the fastest-growing fieldbus technology after the standard is formulated, and more and more CNC sy...

AI Technical Summary

Problems solved by technology

However, because the interrupts generated by the industrial Ethernet hardware are not generated regularly, it is related to the size of the data transmitted on the industrial Ethernet and whether there is packet loss. The interrupts generated by the industrial Ethernet hardware are directly used to drive the motion control process and the industrial Ethernet drive process. For data exchange, there is a buffer mutual exclusion problem, which cannot guarantee the periodic data synchronization between the motion control process in the real-time system kernel and the industrial Ethernet driver process in the non-real-time kernel, cannot guarantee the real-time performance of the system, and the programming is complicated

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