Siemens S7-300 manual Opening a program, Opening the program on the PC, Open the program

5Opening the program on the PC

LAD is a graphical program- ming language similar to a cir- cuit diagram.

The inputs are represented as normally-closed and normally- open contacts, and the out- puts are represented as coils.

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5.2 Opening a program

The program for controlling the conveyor belt is stored in the “conveyor” project.

1. Open the program.

The program appears in the form of ladder logic (LAD). The operations are rep- resented as graphical symbols.

SIMATIC S7-300 Getting Started for First Time Users Getting Started, 04/2007, 6ZB5310-0NC02-0BA0