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

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5Opening the program on the PC

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

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Contents SIMATIC S7-300 Getting Started for First Time Users 04/2007Order No. 6ZB5310-0NC02-0BA0 Danger Safety GuidelinesQualified Personnel Trademarks Prescribed UsageDisclaimer of Liability Page Contents 7 Congratulations1 Welcome To accomplish this, you will perform the following tasks 1 Welcome ValidityPrerequisites You will need a microMaterials and tools Order numberQuantity SiemensYou can also use the In addition, you will need the following componentsVDE 0805 / EN 60950 / IEC 950 or VDE 0106 Part Page 2 Preparing the PC Installing the driver for the PC Adapter USB Installing STEP 7 LiteOpen the installation file and follow the instructions 1. Open the dialog for setting the PG/PC interface Setting the interface2 Preparing the PC Page 2 Preparing the PC Page 3 Installing and wiring the hardware 3.1 What components are required? 3.2 Installing the components 3 Installing and wiring the hardwareInstalling and grounding the mounting rail 2. Connect the mounting rail to the ground wireInstalling modules on the mounting rail 1. Install the power supply, tighten2. Install the CPU 312C ing the screws hand-tight3.3 Wiring the components Preparing the cables1. Cut the cables to the desired 2. Remove the insulation and pressWiring the CPU 312C and the power supply 1. Prepare the power cable2. Connect the power cable to the power supply 3. Secure the power cableWiring the momentary contact switches 1. Connect the momentary contact switches to the digital inputsWiring the motor 1. Connect the power supply for the digital inputs2. Wire the motor, if available. This step is optional Connecting the front panel connector Checking the line voltage setting 2. If necessary, change the switch position for the line voltage3.4 Commissioning the hardware Connecting the CPU 312C and the PC1. Connect the USB cable to the PC Adapter and your PC 2. Close the front panel Supplying power to the CPU 312C 1. Connect the supply cable to the supply system3 Installing and wiring the hardware 3. Set the main switch of the power supply to “ON” Testing the connections Page 4 Configuring the control in STEP 7 Lite 4.1 What is a STEP 7 Lite project? 4 Configuring the control in STEP 7 Lite 4.2 Opening a STEP 7 Lite projectOpening the “conveyor” project 1. Start STEP 7 LiteCreating the module configuration 4.3 Reproducing the module configuration in STEP 7 Lite1. Create a new S7-300 station 4 Configuring the control in STEP 7 Lite Page 4 Configuring the control in STEP 7 Lite Setting the parameters of the CPU 312C 1. Set the amount of retentive bit memory to “0”Saving the project 1. Save the project4.4 Establishing the online connection between the PC and CPU 312C Establishing the online connectionPerforming a memory reset on the CPU 312C 4.5 Downloading and checking the module configuration to the CPU 312C1. Delete the old program blocks and configurations from the CPU 312C Downloading the module configuration to the CPU 312C Checking the module configuration Page 5 Opening the program on the PC 5.1 What is a program? 5 Opening the program on the PC 5.2 Opening a program1. Open the program Page 6 Performing a test run 6.1 Downloading the project to the CPU 312C 6.2 Starting the test run 1. Set the mode switch of the CPU 312C to “RUN”6 Performing a test run 2. Press the green momentary con- tact switch to start the motor The output LED 0.5 lights up. The input LED 0.3 lights up The motor is switched offThe output LED 0.3 goes out Page 7 Congratulations Want to know more about SIMATIC S7-300? Contact us 8 Additional information 8.1 Diagnostics / correction of errors 8.2 Additional documentation 8 Additional informationName of manual DescriptionService & Support on the Internet 8.3 SIMATIC Technical SupportPage 8 Additional information

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