A wia-pa communication sequence controller that supports automatic construction of multiple communication sequences

Abstract

The invention relates to a WIA-PA communication sequence controller that supports the automatic construction of multiple communication sequences, including a sequentially connected decoding circuit, a state machine and a timer group; the decoding circuit is used to receive the defined communication sequence type sent by the processor The operation code is parsed into a communication request signal and sent to the state machine; the state machine is used to control the opening and closing of the timer in the timer group and the receiver, transmitter and physical radio frequency circuit according to the communication request signal, and Complete the sending and receiving of data according to the requirements of the current communication sequence, and control the execution of the communication process; connect with the transmitter, receiver, and physical radio frequency circuit; the timer group is used for timing of each time parameter in the communication sequence, and the timing of the receiving state machine is used Enable signal, generate timing overflow indication signal to state machine. The invention adopts a communication sequence controller instead of a processor to control the entire communication process, which can improve the real-time performance of communication and reduce the workload of the processor.

Description

technical field [0001] The invention relates to industrial wireless communication technology, and specifically describes a controller capable of automatically constructing various WIA-PA wireless communication sequences. Background technique [0002] The industrial wireless network specification WIA-PA is one of the IEC international standards in the field of industrial process automation. With the continuous improvement of wireless technology, WIA networks have been gradually applied to industrial automation control systems, enabling users to achieve low investment and use costs. The ubiquitous perception of the entire industrial process achieves the goals of improving product quality and saving energy. [0003] In a WIA network, wireless nodes communicate based on time slice slots most of the time, that is, receive and send data in the allocated slots, and stay silent at other times. Traditional wireless nodes control the execution of their communication processes by thei...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to add a communication sequence controller inside the wireless node to solve the disadvantages of complex control process and heavy processor workload caused by the processor directly controlling the receiver, transmitter and timer in the traditional structure

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