摘  要：本文研討基于modbus協議的三菱PLC和RFID讀卡器的通信，實現了通信成功后RFID讀卡器的讀卡刷卡功能，此技術可以應用在立體車庫系統中，來實現智能停車。 關鍵詞：RFID   三菱PLC   MODBUS Abstract：This article introduced the communication of Mitsubishi PLC and RFID card reader based on modbus protocol, and realized the card reading and swiping function of RFID reader after successful communication. This technology can be applied to the stereo garage system to achieve intel[登陸后可查看全文]