OPC客户端软件开发包（OPCCLIENTSDK）为不同开发平台提供统一API，不需要任何OPC组件，使用方便，软件开发包提供了c#、vb.net、vb6等语言开发例子。-OPC client software development kit (OPCCLIENTSDK) for different development platform to provide a unified API, does not require any OPC components, easy to use, so

自己编写一个串口收发软件还带CRC功能很适合初学都学习！不管是学VB.NET 还是学COM通信都是一个不可多得的软件(write; compile; compose gorge line; serial port receive; receive and dispatch; dispatcher; transmit-receive; send-receive software fit; suit; rightness; idoneity begin to learn however;