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How can you generate a frequent square wave using the pulse timers in STEP 7?
In this lesson I’m going to write program for an industrial gas dryer using extended pulse timers.
This video is a follow-up lesson to lesson 71, in which I showed you an Automatic Industrial Dryer PLC Program.
As one of our viewers pointed out, when this PLC is powered on and enters RUN mode, the liquid valve at the bottom of the dryer automatically opens.
Today I’m going to show you h...
In this lesson you’ll learn how and where you can use the “Not” instruction.