A kind of motion controller and control method

Abstract

The invention relates to the extension field of a motion controller, in particular to a motion controller and a control method. The motion controller comprises a motion controller body, 1-8 extension modules and extension cables. The extension cables comprise a data reading-writing cable, data transmission cables and an enabling cable. The data reading-writing cable is connected to the motion controller body on one hand, and is respectively connected to each extension module on the other hand. The data transmission cables comprise data transmission cables 0-7. Each data transmission cable is a bidirectional signal line. One end is connected to the motion controller body, and the other end is respectively connected to each extension module. The enabling cable is used for serially connecting the motion controller body and each extension module. The motion controller and the control method are capable of greatly shortening the extension time, and increasing the flexibility of the system. Other extension modules except the own module are not needed during the data exchange, so the application of the motion control system is convenient.

Description

technical field [0001] The present invention relates to the field of motion controller expansion, in particular to a motion controller and a control method. Background technique [0002] With the continuous advancement of industrial automation, more and more devices need to use motion controllers to plan complex motion control. However, due to the limited resources of the motion controller itself, in many applications, some additional modules are needed to complete the system application. There are many problems, such as poor matching between external modules and motion controllers, high prices, complex and unstable systems, etc. [0003] The expansion bus currently used by the motion controllers on the market is extended through the cascading connection of the motion controller to the first expansion, and the first expansion to the second expansion. The motion controller and each expansion module have a programmable logic device such as FPGA or CPLD as the carrier of the ...

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Problems solved by technology

[0004] However, due to the cascade connection between the various modules in the above-mentioned implementation method, the data communicated between the motion controller and the expansion module in the back must pass through the expansion module in front of it, causing a large delay in the communication time; and this expansion bus is all Does not support automatic identification of expansion modules, and supports fewer types of expansion modules, which cannot meet the requirements of the motion control system

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