System Theory

Download Automating with SIMATIC S7-400 inside TIA Portal by Hans Berger PDF

By Hans Berger

This ebook provides a finished description of the configuration of units and community for the S7-400 parts contained in the engineering framework TIA Portal. You tips on how to formulate and try out a keep an eye on software with the programming languages LAD, FBD, STL, and SCL. The ebook is rounded off by way of configuring the disbursed I/O with PROFIBUS DP and PROFINET IO utilizing SIMATIC S7-400 and information trade through commercial Ethernet.

SIMATIC is the globally confirmed automation process for imposing business controllers for machines, construction crops and strategies. SIMATIC S7-400 is the main strong automation method inside SIMATIC. This approach controller is perfect for data-intensive initiatives which are in particular ordinary for the method undefined. With marvelous communique potential and built-in interfaces it truly is optimized for better projects similar to the coordination of whole systems.

Open-loop and closed-loop keep an eye on initiatives are formulated with the STEP 7 expert V11 engineering software program within the field-proven programming languages Ladder Diagram (LAD), functionality Block Diagram (FBD), assertion record (STL), and based keep an eye on Language (SCL). The TIA Portal person interface is tuned to intuitive operation and encompasses the entire standards of automation inside of its variety of features: from configuring the controller, via programming within the diverse languages, the entire approach to this system test.

Users of STEP 7 specialist V12 will simply get besides the descriptions in response to the V11. With begin of V12, the monitors of the expertise services may perhaps range a little from the V11.

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During editing in the Project view, you can save the entered project data using the Project > Save or Project > Save as menu command. You can close the project using Project > Close – following confirmation of whether changes are to be saved – without exiting STEP 7. You can delete a (closed) project from the hard disk – following confirmation – using Project > Delete project. Compiling and downloading project data Before project data can be downloaded to a station, it must be made readable for the processor: They must be “compiled”.

All modules indicate a delivered process signal by means of an LED on the output channel. 3 Analog input modules The CPU can use the analog input modules to process analog variables after they have been converted into digital values by the modules. These modules are signal conditioners for analog process input signals. Voltage and current transmitters, thermocouples, resistors or thermoresistors can be connected to the modules depending on the design. The measuring range can be set as desired per channel or per channel group.

A (small) part of the load memory is available as RAM on the CPU. If you want to make larger program changes during the program test, you must expand the load memory with a RAM memory card. If you remove the memory card from the CPU, the data stored there will be lost, because the RAM memory card does not have a buffer. The RAM memory card draws the backup voltage from the battery buffer of the power supply or via the external buffer power supply of the CPU. Fig. 7 SIMATIC RAM memory card The data is stored in non-volatile form on a FLASH memory card (FEPROM).

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