• PLC实现重复定时


    PLC实现重复定时

    PLC实现定时器复位其实是一个很简单的问题,无奈脑子太笨,想了一下午才搞定,写一个小的测试程序如下:

    PROGRAM _CYCLIC
        (* Insert code here *)
        TON_0(IN := cmd,PT := T#3s);
        status := TON_0.Q ;
        IF status = 1
            THEN 
            cmd := 0;
            light := 0;
        ELSE
            light := 1;
        END_IF
    END_PROGRAM
    

    TON_0是一个TON功能块实例,使用方法如下:

    I/O Parameter Data Type Description
    IN IN BOOL Input signal
    IN PT UDINT Delay time in 10 ms steps
    OUT Q BOOL Output signal, the rising edge of the input signal is delayed by PT
    OUT ET UDINT Elapsed time in 10 ms increments

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  • 原文地址:https://www.cnblogs.com/zhengkang/p/5712443.html
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