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6SL3351-6GH38-1AB3
6SL3351-6GH38-1AB3
6SL3351-6GH38-1AB3
在三菱FX系列PLC中数据寄存器D8000与辅助继电器M8000之后属于特殊的寄存器或是继电器。这些特殊寄存器和继电器都有特定的含义,如对于特殊继电器,常用的有M8000,M8002。
M8029也是一个常用的特殊继电器,它是指令执行完成标志。既在指令执行完成后,输出这个M8029信号。
因为M8029是指令执行完成标志,那在编程时就可以用这个标志做以下一些工作。判断指令是否执行完成,通过判断M8029是否接通,可以判断指令是否完成。
可以用这个标志启动下一个执行指令,在程序中有时会有多个执行指令,一个指令需要在前一个指令执行完成后再去执行,那就可以用上一个指令的完成标志去启动下一个指令。
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