PLC每接收到一帧数据，对该帧数据进行异或校验，如果无误则存送到指定缓冲区，如果有误则请求重新发送。
When PLC receive one frame data, it checkout the frame. If the data is correct, it is saved in the appointed buffer. If not, PLC request the IPC resend it.
PLC每接收到一帧数据，对该帧数据进行异或校验，如果无误则存送到指定缓冲区，如果有误则请求重新发送。
When PLC receive one frame data, it checkout the frame. If the data is correct, it is saved in the appointed buffer. If not, PLC request the IPC resend it.
应用推荐