该文介绍了如何通过以太网实现主机与PLC的高速网络通信，并给出在VC环境下具有报警功能的监控程序。
The paper introduces fast communication between the host and PLC by the Ethernet, and presents an application program with the function of alarm in the VC.
该文介绍了如何通过以太网实现主机与PLC的高速网络通信，并给出在VC环境下具有报警功能的监控程序。
The paper introduces fast communication between the host and PLC by the Ethernet, and presents an application program with the function of alarm in the VC.
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