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Memory Areas and Components of a Timer


Memory Area



Times have an area reserved for them in the memory of your CPU. This memory area reserves one 16-bit word for each timer address. When you program in FBD,

256 timers are supported. Please refer to your CPU's technical information to check the number of timer words available.



The following functions access the timer memory area:



·       Timer instructions



·       Updating of timer words by the clock timing. In the RUN mode, this CPU function decrements a given time value by one unit at the interval specified by the time base until the time value is zero.
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