Siemens SIMATIC STEP 7 V5.2 Getting Started page 69

We recommend you do not completely download extensive programs onto the CPU to run
them, because diagnosing errors is more difficult due to the number of possible sources of
an error. Instead, you should download blocks individually and then test them in order to
obtain a better overview.
STEP 7 Getting Started
A5E00171228-01
Downloading and Debugging the Program
Now press both keys in your test
I 0.1
configuration.
The diodes for input I 0.1 and I 0.2 light
up on the input module.
I 0.2
The diode for output Q 4.0 lights up on
the output module.
In the graphic programming languages
Ladder Logic and Function Block
Diagram, you can trace the test result
by following the change in color in the
programmed network. This color
change shows that the result of logic
operation is fulfilled up to this point.
With the Statement List programming
language, the display in the STA and
RLO columns changes when the result
of logic operation is fulfilled.
Deactivate the function Debug >
Monitor and close the window.
Then close the online window in the
SIMATIC Manager.
You can find more information under Help > Contents
in the topics "Debugging" and "Testing with Program
Status."
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