重点介绍了个人计算机与PLC连网通信的条件、个人计算机的异步通信适配器、以及运用高级语言编写个人计算机与PLC通信的接口程序原理。
The paper introduce the condition of communicating between person computer and PLC, the person computer asynchronism adapter and the high programming language communication interface principle of PLC.
此资源适配器承载sca模块的激活规范，就异步通信路径中的总体性能和处理而言，这些激活规范也非常重要。
This Resource Adapter hosts the Activation Specifications of SCA Modules that are also important with respect to overall performance and processing in asynchronous communication paths.
集成电路。NMOS管，异步通信接口适配器。
Integrated circuit. NMOS, asynchronous communications interface adapter.
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