By Hans Berger
This ebook offers a finished description of the configuration of units and community for the S7-400 parts contained in the engineering framework TIA Portal. You easy methods to formulate and try a keep an eye on application with the programming languages LAD, FBD, STL, and SCL. The e-book is rounded off through configuring the dispensed I/O with PROFIBUS DP and PROFINET IO utilizing SIMATIC S7-400 and information alternate through business Ethernet.
SIMATIC is the globally demonstrated automation approach for imposing business controllers for machines, creation vegetation and procedures. SIMATIC S7-400 is the main strong automation procedure inside SIMATIC. This procedure controller is perfect for data-intensive initiatives which are in particular standard for the method undefined. With marvelous conversation power and built-in interfaces it really is optimized for higher projects similar to the coordination of complete systems.
Open-loop and closed-loop keep watch over projects 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 checklist (STL), and dependent regulate Language (SCL). The TIA Portal person interface is tuned to intuitive operation and encompasses the entire necessities of automation inside its variety of features: from configuring the controller, via programming within the assorted languages, the entire technique to this system test.
Users of STEP 7 expert V12 will simply get in addition to the descriptions in accordance with the V11. With commence of V12, the displays of the know-how capabilities may possibly range somewhat from the V11.
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Additional info for Automating with SIMATIC S7-400 inside TIA Portal
The digital output modules have two or four bytes, corresponding to 16 or 32 output signals. 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 Watch and force tables folder can be configured using self-created subfolders. Program info provides information about b the call structure shows the call sequence of the blocks – which block calls which other block b the dependency structure – which block is called by which other block b the assignment list – which global operands are already used, and which addresses are still unused b the CPU Resources – how much space is required by the program in the load and work memory. Under PLC alarms you see an overview of which PLC alarms, user diagnostic alarms, and system alarms are currently present and edit them.
You use a FLASH memory card if you want to save the user program in a CPU retentively without backup voltage. You can write to a FLASH memory card in a suitable EPROM programming module or in the CPU with the entire user program. Beginning with version 5, a memory card has a serial number that can be read by the user program. This makes it possible to allow use of the user program only when the “correct” memory card is inserted (copy protection similar to a dongle). 4 Memory areas in an S7-400 station Fig.