What is required for a personal computer to be used as a PLC programming terminal? To accomplish this it needs manufacturers’ programming software. Once it is installed in PC it can be used as programming terminal device like hand-held programming device.

In a PLC system there will usually be dedicated modules for inputs and dedicated modules for outputs. An input module detects the status of input signals such as push-buttons, switches, temperature sensors, etc.. An output module controls devices such as relays, motor starters, lights, etc.

A PROGRAMMABLE LOGIC CONTROLLER (PLC) is an industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices.

Personal computers are widely used for programming PLCs. A major advantage of using a computer is that the program can be stored on the hard disk or a CD and copies easily made. The computer is connected to the PLC by Ethernet, RS-232, RS-485 or RS-422 cabling.

Download/Upload PLC program directly from/to USB through HMI

1. Copy the PLC program (.DVP) into an USB memory stick.
2. Insert the memory stick into the USB port of the HMI.
3. Enter the system menu of the HMI by pressing the “SYSTEM” button (at the rear side of the HMI) for few seconds.
4. Enter the “Up/Download” sub menu.

In terms of a PLC upload refers to getting the logic running on the PLC to the programming software running on your computer. An upload is always initiated from the computer. Download refers to getting logic from your computer to the PLC.

The software and hardware was created by same version of TIA….ThaKibosh

1. Select the project name in the project tree.
2. In the online menu select “upload decice to PG/PC”
3. Select the interface.
4. Select device.
5. Push upload.

The Steps to Download HMI Program via USB in TIA Portal

1. Step 1: Connect the USB to your computer.
2. Step 2: Open the HMI project with TIA Portal.
3. Step 3: On “Project tree”, click “Card Reader/USB memory”.
4. Step 4: Click and hold the left mouse.
5. Step 5: Open the USB disk, you will see a folder “Simatic.

PLC programming can be done also with the help of Simatic Manager, which provides the possibility to write programs in three programming languages:

1. Ladder logic (LAD) is one programming language used with PLCs.
2. Statement List (STL) – list of instructions.
3. Function Block Diagram (FBD) – functional block diagram.

What is Interface Module in Siemens PLC?…Siemens S7 300 and STEP 7 PLC program

1. Open SIMATIC Manager.
2. 2.To start our programming first we need to create a new project by clicking on the “new” icon on the toolbar to open the “new project” window.
3. After creating the project we click on its name to highlight it.

To perform this type of download select the block(s) you wish to download and then select the PLC > Download menu item or the download button . Holding down the Ctrl key or the Shift key allows more then one block to be selected at a time.

Setting up communication between PC and PLC (PPI)

1. Connect the PPI cable between your computer and the PLC.
2. Open the Communications dialog in STEP 7-Micro/WIN.
3. Click on Set PG/PC Interface.
4. Select PC/PPI cable (PPI) interface.
5. Open the Local Connection tab and choose the port to which the cable is connected.

Siemens makes several PLC product lines in the SIMATIC S7 family. They are: S7-200, S7-300, and S7-400. Siemens Step 7 is a powerful integrated software solution for automation, and includes the programming environment for Siemens programmable logic controllers (PLCs).

PROFIBUS (Process Field Bus) is a standard for fieldbus communication in automation technology and was first promoted in 1989 by BMBF (German department of education and research) and then used by Siemens. It should not be confused with the PROFINET standard for Industrial Ethernet.

system fault

The SIMATIC S7-300 universal Controllers saves on installation space and features a modular design. A wide range of modules can be used to expand the system centrally or to create decentralized structures according to the task at hand, and facilitates a cost-effective stock of spare parts.

a DB (DataBase) is a lists of data in the memory of the plc. Mostly its a STRUCT (Record) or a combination of several STRUCTS.

TIA Portal is new software platform for configure and program S7-1500. STEP 7 is only applicable to S7-300/400. TIA Portal doesn’t support all hardware in range of STEP 7 specifically old S7-300/400 modules .

Totally Integrated Automation Portal (TIA Portal) provides you with unrestricted access to our complete range of digitalized automation services, from digital planning and integrated engineering to transparent operation. TIA Portal is thus your perfect gateway to automation in the Digital Enterprise.

The latest version of TIA Portal version 16 has been released by Siemens. This means that there are now 6 major versions of Simatic Step 7 TIA available that can be utilised for programming their S7 1200/1500 and 300/400 PLC systems.

You can download the free trial version for Siemens TIA Portal, SIMATIC STEP 7, WinCC and PLCSIM Programming Softwares and test it for 21 days.

Your gateway to automation in the Digital Enterprise Totally Integrated Automation Portal (TIA Portal) gives you unrestricted access to the complete range of digitalized automation services, from digital planning to integrated engineering and transparent operation.

With SiVArc, TIA Portal V14 or higher provides you with an option that automatically generates your visualization. Then SiVArc analyzes the control program and automatically generates the visualization. Using SiVArc saves you configuration time and prevents errors, particularly in recurring tasks.

TIA Portal V16 enables you to work conveniently with the TIA project server. You can use the functionality of the project server to work with multi-user engineering, multi-user commissioning, and now exclusive engineering. Advantages of using the project server: Central storage of projects in the network.

TIA Portal V16 includes the new Version Control Interface (VCI) to external versioning systems such as GIT, SVN and TFS. The import and export of software objects via the TIA Portal interface allows versioning to be seamlessly integrated into the development process.

You have to open your project in TIA Portal V13 SP1 (or SP2). Update the panel to V12. x and compile it. Now you can open the project in TIA Portal V14 or V15.

WinCC Unified allows to freely design user interfaces with a huge variety of graphical features and reusability of all elements. Thanks to the use of vector-based graphics (SVG), images can be scaled as desired while staying crystal clear.

With WinCC Advanced you can also configure the PC-based Runtime system “WinCC Runtime Advanced” in addition to the panels. With WinCC Professional you can also configure the PC-based Runtime system “WinCC Runtime Professional” in addition to the devices that can be configured with WinCC Advanced.