Communication control method and device for multi-core embedded PLC
A control method and embedded technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of poor stability of embedded PLC and difficulty in ensuring communication security, etc., to achieve communication security, The effect of improving stability
Active Publication Date: 2019-09-10
HANGZHOU DIANZI UNIV
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Problems solved by technology
When multiple CPUs (cores) are installed in an embedded PLC, it is difficult to ensure communication security between each core, resulting in poor stability of the embedded PLC
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[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0041] figure 1 The flow chart of the communication control method of the multi-core embedded PLC provided by Embodiment 1 of the present invention, such as figure 1 As shown, the method of this embodiment may include:
[0042] S101. Acquire an access operation instruction; the access operation instruction includes at least one of the following:...
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The present invention provides a communication control method and device for a multi-core embedded PLC. The method includes: the embedded PLC includes a plurality of cores, and the multiple cores communicate in series through a dual-port data communication pipeline. connected to form a ring communication network; the method includes: obtaining an access operation instruction; the access operation instruction includes at least one of the following: a write operation instruction, a read operation instruction; according to the access operation instruction, in the two The port transfers the data to be accessed between the cores at both ends of the data communication pipeline. In the present invention, by setting a ring communication network between multiple cores of the embedded PLC, secure communication between the multiple cores of the embedded PLC is realized, and data can be read and written between the cores through the dual-port data communication pipeline , making the communication between the cores of the embedded PLC more secure, and improving the stability of the embedded PLC.
Description
technical field [0001] The invention relates to the technical field of industrial control, in particular to a communication control method and device of a multi-core embedded PLC. Background technique [0002] Embedded programmable logic controller (Programmable Logic Controller, PLC) refers to: through the development and transplantation of the PLC platform, the embedded control system has the function of PLC. With the development of my country's high-end equipment manufacturing industry, the performance requirements of embedded PLC are also rising. In many occasions, improving PLC performance through a single chip will be affected by the main frequency of the Central Processing Unit (CPU), CPU Ports, power consumption, and many other limitations, so it needs to be controlled through the coordination of multiple CPUs. When multiple CPUs (cores) are installed in an embedded PLC, it is difficult to secure communication between each core, resulting in poor stability of the emb...
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IPC IPC(8): G05B19/05
Inventor 赵建勇邬惠峰陈佰平
Owner HANGZHOU DIANZI UNIV