Function And Test Of The First Exercise Program - Siemens SIMATIC S7-200 Manual

First programming exercise

4.4 Function and Test of the first exercise program

4.4 Function and Test of the first exercise program
In the first exercise program, switch S0 turns
the motor on and off. Switch S1 changes the
direction of the motor.
Switches S0 and S1 are the first two
switches on the input simulator. These
switches provide 24 V DC to inputs I0.0 and
I0.1 on the CPU. The output simulator is
connected to Q0.0 and Q0.1 on the CPU.
Q0.0 turns the motor on and off. Q0.1
changes the direction of the motor.
With the exercise program, the signal state
of I0.0 is assigned to output Q0.0 and the
signal state of I0.1 is assigned to Q0.1
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Getting Started - Beginners
Training Documents, 07/2007, A5E01031470B