本文介绍了应用于PC控制电梯系统的六种减少PC输入点数的方法，给出了采用F1系列PC的硬件与软件。
In this paper, six methods to reduce input points in elevator control system with PC is introduced, hardware and software using MELSEC F1 series PC are also given out.
在每次完整地将输入传递给CPU后，将输出磁盘及二进制焦点数据。
After each full pass of input the CPU, disk and binary focus data is printed out.
检查所有输入参数之后，获取访问端点数据库的引用。
After all the input parameters are validated, reference to access the endpoint database is obtained.
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