This article describes the Siemens rectifier unit,inverter,PLC in the ship unloader on the application,focused on the composition of the entire system,hardware and software features and the key point.

• 介绍了西门子整流单元、逆变器、PLC在卸船机上的应用,重点介绍了整个系统的构成、软硬件特点和关键点。