Editing Your User Program For A Different Structure - Siemens SIMATIC S7-1200 Getting Started

Complete the user program

4.3 Editing your user program for a different structure

4.3 Editing your user program for a different structure
First, drag the TOF timer from network 3 and drop it onto network 2.
The output of the TON timer now connects directly to the input of the TOF timer.
You have now combined the logic of networks 2, 3 and 4 onto one network.
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The networks that you created match the circuit diagram. This helps other
people to understand the logic of the user program, such as for
troubleshooting or for future modification.
However, you could also combine the timers and the "MotorStart" output onto
one network. Our next exercise shows how easy it is to edit your LAD
program.
The "Delay_5sec" output (a bit in M memory) is no longer required for
starting the TOF timer. Instead of deleting the "Delay_5sec" output,
simply rename the output.
1. Double-click the "Delay_5sec" tag and click the "Tag" icon to display
the list of tags.
2. Select the "MotorStart" tag from the list of tags.
Now delete networks 3 and 4:
1. Select and right-click the network title to display the context menu.
2. Select the "Delete" command from the context menu.
Getting started with S7-1200
Getting Started, 11/2009, A5E02486791-01