Siemens v1.0 Manual de servicio Pagina 105

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Extended example
3.2 Expanding the program
STEP 7 Basic V10.5
Getting Started, 12/2009, A5E02651459-01
105
5. Insert a normally closed contact at the end of the second rung and interconnect it with the
tag "milk_pasteurized".
By interconnecting the tags "LS_2" and "milk_pasteurized" you define the condition that
the conveyor will be stopped when a bottle has reached the heating chamber and the
milk has not been pasteurized yet.
6. Insert a normally open contact into the third new rung and interconnect it with the tag
"LS_3".
By interconnecting the tag "LS_3" you define the condition that the conveyor will stop
when a bottle has reached the end of the conveyor.
7. Interconnect the inserted normally open contacts in a parallel connection.
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