A data communication method, a method and a system for measuring and controlling a dual redundancy motor
A data communication and dual-redundancy technology, applied in digital transmission systems, transmission systems, data exchange networks, etc., can solve the problems of program running speed reduction, large system resource occupation, and easy loss of data, etc.
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[0062] Such as figure 1 As shown, the data communication method of the present invention is used to realize that the upper computer LabVIEW receives the data sent to it by the lower computer DSP digital processor module 1 through the serial port, comprising the following steps:
[0063] Step 1, communication protocol setting: set the communication protocol between the upper computer LabVIEW and the lower computer DSP digital processor module 1 in the upper computer LabVIEW;
[0064] During the specific implementation, the set protocol commands are shown in Table 1; each frame of data has 5 bytes in total, and 0x55 is the initial command word, which is used to identify the sign that the command starts; TYPE indicates the type of command; DataL indicates an integer The lower eight bits of the number, DataH represents the upper eight bits of an integer; CRC8 verifies the correctness of the received data.
[0065] Table 1 Upper and lower computer communication protocol
[0066] ...
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