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The corresponding wiring:
S1 switches input I1, while S2 switches input I2. The load is connected to the relay Q1.

Circuit program input

Let us now write the circuit program, starting at the output and working towards the input.
LOGO! initially shows the output:
You will see an underscore below the Q in Q1, which is the cursor. The cursor indicates your
current position in the circuit program. You can move the cursor by pressing the ,
keys. Now press the
At this point you enter only the first (OR) block. Press OK to select editing mode.
Manual, 10/2017, A5E01248535-AA
key. The cursor moves to the left.
Programming LOGO!
3.7 Writing and starting the circuit program


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