(DeviceNet was developed in the 1990s and is now widely used in North America, Asia and other countries. With the benefits of low cost, high efficiency, high performance, and high reliability, factory automation occupies a dominant position in the process. China's industrial automation started late, and it is still in the period of introducing advanced equipment from abroad. This requires us to understand the DeviceNet communication protocol, and we can use the existing DeviceNet equipment to form a new)
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