MODBUS主站调试工具，仿真工具，可以模拟主站，对从站设备进行调试-MODBUS master debugging tools, simulation tools that can simulate the main station, on the slave device for debugging

两款modbus调试工具，一个迷你主站一个模拟从站，对于调试modbus很有用处，包含注册码(The two MODBUS debug tool, a mini master station, an analog slave station, is very useful for debugging modbus, including the registration code)