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用官方的代码https://book.openmv.cc/example/32-Modbus/modbus_rtu_slave.html怎么和串口调试工具交互呢
需要接西门子的PLC调试,
如果你有组态软件的话应该也可以,(就是模拟modbus的软件,一般是监视状态),但是我没用过。