Extended example
3.2 Expanding the program
STEP 7 Basic V10.5
Getting Started, 12/2009, A5E02651459-01
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Procedure
To program the duration of the heating process, follow these steps:
1. Open the fourth network of the organization block "Main [OB1]".
2. Insert a normally open contact.
3. Interconnect the normally open contact with the tag "LS_2".
4. Insert the instruction "On delay" (TON).
The "Call options" dialog box for creating a data block will open.
5. Create the data block "IEC_Timer_0".
The data block ""IEC_Timer_0" is created in the "Programming blocks" folder and
assigned to the instruction "On delay". The data of the inserted time instruction are stored
in this data block.
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