August 2010
Intermediate to advanced
288 pages
13h 21m
English
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a programmable timer, version 1
Many of the programs presented so far have used the Wait Time block to add pauses. Although you can set the length of a pause using the Wait Time block’s Configuration Panel, you can’t set it using a data wire, which means that you can’t change the length of time the block waits while a program is running. The next program shows how to get around this limitation by combining a Loop block with a data wire to control when the loop exits, thereby allowing you to adjust the delay programmatically.
The Timer1 program (shown in Figure 10-14) uses the Timer block and a Loop block to create a programmable timer. A Math block is used to put the length of the delay on a data wire, although in your own programs you would usually ...
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