In the system, PLCs perform real control units and PC-based operator control center performs monitor function.User can put the video capture card into the computer to record local scene.

• 该结构使用PLC作为现场控制单元，组态系统作为现场监控单元，通过配置视频卡来记录生产过程，形成了现场控制与监控网络层面。