Siemens v1.0 Manual de servicio Pagina 104

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Extended example
3.2 Expanding the program
STEP 7 Basic V10.5
104 Getting Started, 12/2009, A5E02651459-01
Procedure
To program the conditions for stopping the conveyor, follow these steps:
1. Open Network 2 in the organization block "Main [OB1]".
2. Add three new rungs.
3. Insert a normally open contact into the first new rung and interconnect it with the tag
"OFF".
By interconnecting the tag "OFF" you define the condition that the conveyor will stop
when the machine is switched off.
4. Insert a normally open contact into the second new rung and interconnect it with the tag
"LS_2".
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