摘  要：本文研讨基于modbus协议的三菱PLC和RFID读卡器的通信，实现了通信成功后RFID读卡器的读卡刷卡功能，此技术可以应用在立体车库系统中，来实现智能停车。

关键词：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 intelligent parking.

Key words：RFID Mitsubishi PLC MODB