Opening a saved program

We will continue learning the programming of PLC here by opening the project/program we saved in the previous chapter:

1. Start the TIA Portal application.
2. Click on Open existing project, select the project, and then click Open:

Figure 9.1 – Opening a saved program – recently used project

3. Upon clicking Open, you should see the following screen. Click on Open the project view:

Figure 9.2 – Opening a saved program – Open the project view

4. Double-click the PLC folder (PLC_1) on the left-hand side, and then double-click Program blocks:

Figure 9.3 – Opening a saved program – PLC_1 [CPU 1211C AC/DC/Rly]

5. Double-click Main [OB1]:

Figure 9.4 – Opening a saved program – Main [OB1]

The program will be opened showing the ladder diagram, as shown in the following...