Siemens S7-300 manual Setting the parameters of the CPU 312C

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Setting the parameters of the CPU 312C

The retention behavior of the CPU 312C determines whether or not the values of internal memory bits are retained after a power failure or memory reset on the CPU 312C.

You can use the retention behavior to ensure that the motor does not start up in an uncontrolled manner after a power failure.1. Set the amount of retentive bit memory to “0”.

Setting the parameters of the CPU 312C

You can set numerous parameters for each of the modules. As an example, we will modify the retention behavior of the CPU 312C.

1. Set the amount of retentive bit memory to “0”.

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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 7 Congratulations Contents1 Welcome To accomplish this, you will perform the following tasks You will need a micro 1 WelcomeValidity PrerequisitesSiemens Materials and toolsOrder number QuantityYou 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? 2. Connect the mounting rail to the ground wire 3.2 Installing the components3 Installing and wiring the hardware Installing and grounding the mounting railing the screws hand-tight Installing modules on the mounting rail1. Install the power supply, tighten 2. Install the CPU 312C2. Remove the insulation and press 3.3 Wiring the componentsPreparing the cables 1. Cut the cables to the desired3. Secure the power cable Wiring the CPU 312C and the power supply1. Prepare the power cable 2. Connect the power cable to the power supply1. Connect the momentary contact switches to the digital inputs Wiring the momentary contact switches1. Connect the power supply for the digital inputs Wiring the motor2. Wire the motor, if available. This step is optional Connecting the front panel connector 2. If necessary, change the switch position for the line voltage Checking the line voltage setting3.4 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 1. Connect the supply cable to the supply system Supplying power to the CPU 312C3 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? 1. Start STEP 7 Lite 4 Configuring the control in STEP 7 Lite4.2 Opening a STEP 7 Lite project Opening the “conveyor” projectCreating 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 1. Set the amount of retentive bit memory to “0” Setting the parameters of the CPU 312C1. Save the project Saving the projectEstablishing the online connection 4.4 Establishing the online connection between the PC and CPU 312CPerforming 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 Additional information 8.2 Additional documentationDescription Name of manual8.3 SIMATIC Technical Support Service & Support on the InternetPage 8 Additional information
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