8070-0279-01 操作绿色PLT指示器输出通电OE指令位

　　8070-0279-01定时器1由定时器2输出的常闭(N.C .)触点启动。最初，定时器1输出触点打开，从而迫使闪光灯保持关闭。定时器1触点在[经过时间=设定点]时间500 ms后开启定时器2，闪光灯和定时器2一起开启。

再过500毫秒后，定时器2输出开启，迫使第一定时器关闭，然后第二定时器关闭，同时闪光灯输出关闭，所有这些都在一个“复位”步骤中完成。在下一次扫描时，循环再次开始。闪光灯开启时间延迟500毫秒

8070-0279-01这种梯形逻辑程序是许多定时开关控制操作变体中的一种。在我们的OpenPLC LD中，内部存储器位(B1)和(B2)将用于转换到指定的梯级，以启动脉冲定时器(TP1)并操作绿色PLT指示器输出通电(OE)指令位。

了解了联锁计时器触点后，让我们来构建可视信号器。

8070-0279-01 Timer 1 is activated by the normally closed (N.C.) contact output from Timer 2. Initially, timer 1 output contacts opened, forcing the flash to remain closed. Timer 1 contact opens timer 2 after 500 ms of [time=set point] time, and the flash and timer 2 are turned on together.

After another 500 milliseconds, Timer 2 output opens, forcing the first timer to close, then the second timer closes, and at the same time, the flash output closes, all of which are completed in a “reset” step. At the next scan, the loop starts again. Flash on time delay of 500 milliseconds

The trapezoidal logic program 8070-0279-01 is one of many variants of timing switch control operations. In our OpenPLC LD, internal memory bits (B1) and (B2) will be used to transition to the specified ladder to start the pulse timer (TP1) and operate the green PLT indicator to output the power on (OE) instruction bit.

After understanding the interlocking timer contacts, let’s build a visual signal.