Siemens v1.0 Wartungshandbuch Seite 55

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Simple example
2.5 Test program
STEP 7 Basic V10.5
Getting Started, 12/2009, A5E02651459-01
55
2. Modify the "ON_OFF_Switch" tag to "1".
If the "ON_OFF_Switch" tag is set to the signal state "1", the normally open contact is
closed. The current flows through the normally open contact to the coils at the end of the
network. The current flow is indicated by the green color of the current path. The "ON" tag
is set and the example machine will be switched on. The "OFF" tag has the signal state
"0" and no further effect. This status is indicated by the blue dashed line.
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