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某压铸车间监测系统支持的通信接口有OPC、DDE和ODBC,其中OPC接口更适用于监测系统与外部程序的通信。为了开发监测系统客户端,详细分析了OPC自动化接口规范及3种数据通信方式,最终通过VB语言和OPC接口开发了监测系统的客户端。企业管理网络中的计算机可通过该客户端与被监测压铸单元进行实时数据交互,显示压铸设备运行情况。
A die-casting shop monitoring system supports communication interfaces OPC, DDE and ODBC, OPC interface which is more suitable for monitoring systems and external communications. In order to develop the client of monitoring system, the specification of OPC automation interface and three kinds of data communication methods were analyzed in detail. Finally, the client of monitoring system was developed by VB language and OPC interface. The computer in the enterprise management network can interact with the monitored die-casting unit through the client to display the running status of the die-casting equipment.