这是一个馈电传感器的程序。包含功能如下：感应电路中是否有电流。通过两个led的状态显示是否有电。通过拨码开关确定地址。然后由485返回上位机。同时集成语音芯片PM66，实现语音提示-This is a feed sensor process. Includes the following functions: sensing whether the circuit current. Led by the state of the two shows if there is power. Determined by DIP switch address. Then returned by the 485 PC. At the same time integrated voice chip PM66, voice prompts