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Supervisory control and data acquisition (SCADA) is a control systemarchitecture that uses computers, networked data communications and graphical user interfaces for high-level process supervisory management, but uses other peripheral devices such as programmable logic controller(PLC) and discrete PID controllers to interface with the process plant or machinery. The operator interfaces that enable monitoring and the issuing of process commands, such as controller set point changes, are handled through the SCADA computer system. However, the real-time control logic or controller calculations are performed by networked modules that connect to the field sensors and actuators. The SCADA concept was developed as a universal means of remote access to a variety of local control modules, which could be from different manufacturers allowing access through standard automation protocols. In practice, large SCADA systems have grown to become very similar to distributed control systems in function, but using multiple means of interfacing with the plant. They can control large-scale processes that can include multiple sites, and work over large distances as well as small distance.It is one of the most commonly-used types of industrial control systems, however there are concerns about SCADA systems being vulnerable to cyberwarfare/cyberterrorism attacks.  

The burden being placed on municipal utilities continues to increase. Customers demand quick problem identification and resolution. Regulatory organizations have strict compliance requirements and an unprecedented ability to levy fines. Reporting requirements have increased, all in an environment of tight budgets and limited personnel. The media also is eager to sensationalize security incidents or weaknesses in public and natural resources. Traditional SCADA systems, with their expensive architecture and manpower intensity, fall short of current needs. A fresh contemporary approach is needed. In many distributed utilities, the applications are small, the site is remote, and the costs for both the SCADA software and the communications infrastructure are high. But imagine if there were a robust remote controller with built in SCADA able to utilize existing public network infrastructure that was easy to configure and install. This would also include advanced security detection and alarm reporting providing information when and where you need it. Sound too good to be true, it is available today. This paper outlines a new approach, “Distributed SCADA” that matches contemporary needs and requirements using open and proven IP technology while completely eliminating many of the existing concerns and costs associated with small- to medium-sized municipal and utility applications. At the conclusion of this document a case study is provided comparing a traditional wastewater system to a new Distributed SCADA solution approach. The New Architecture Despite the broad choice of solutions for remotely controlled equipment and centralized monitoring systems, it is no longer necessary to use traditional and discrete devices such as a PLC, modem/dialer, data logger or SCADA PC and then experience the agonies of integration. Imagine a new industrial solution whose simplicity rivals your cell phone/PDA — with all of the features included in one device and with one easy-to-use interface. This is the new, cost-effective all-in-one, intelligent Telecontroller.

There are a few valid justifications to change over your venture from ProTool to WinCC Flex. Numerous present Siemens HMI boards don't bolster ProTool. While arranging the HMI venture for the more up to date board, you may observe ProTool can't be designed to help the board. Siemens never again underpins ProTool. ProTool was eliminated in 2004, with help finishing in 2010. WinCC Flex/Entry bolster an immense number of new highlights. These highlights can enormously decrease the time it takes to program your HMI, and in addition open up chances to utilize various new highlights. Know that when you start the change procedure (with WinCC Flex), you will require WinCC Flex SP2 or prior. In WinCC Flex SP3, the alternative is never again accessible to change over a ProTool venture. Changing over the Program Open WinCC Flex (SP2 or prior). In case you don't know, in WinCC Flex, select Help > About, and check the rendition number. Photograph of WinCC Flex SP2 or prior Select "Open a ProTool venture". On the off chance that you don't see this choice, the rendition of WinCC Flex you have is SP3 or more up to date. Photograph of a ProTool venture On the left program bar, select "Stage 7". This will enable you to choose a venture you've recently opened in Simatic Administrator. You can likewise peruse to the venture (through My Records) in the event that you know the task way. Photograph of choosing Stage 7 Peruse to the right venture, and select the ProTool venture you wish to change over. Victory! This will open the undertaking in WinCC Flex. Make a point to play out a remake all and fix any blunders that may have happened amid the transformation procedure. Reward Tip On the off chance that you have to change over an old undertaking since you've redesigned your HMI, you don't have to reproduce the entire task. Just update with the old undertaking, at that point right tap on the board in WinCC Flex, and select "Change Gadget Type".

We have several methods to communicate our PC with the Delta PLC’s, and many users don’t know some of them. On the other side, every time is more difficult to found RS232 serial ports in the computers, and the USB to RS232 converters are not as much trustable as they must, because of that I would like to list our alternatives to that problem: Direct communication PC to PLC: 1. PC RS232 port to PLC RS232 port using the wiring DVPACAB2A30 2. PC USB port to PLC RS485 port using the device IFD6500 (Delta USB-RS485 converter). 3. PC Ethernet port to PLC DVPEN01-SL module (need compatibility with high speed bus) Communication PC to PLC trough Delta HMI (Direct Link): The direct link capability in Delta HMI is used to communicate with the PLC and HMI with one only wire. Furthermore this capability have been improved lately and now is possible monitor both of them at the same time using only one wire. (direct Link function updated) 1. Direct Link function trough Standard USB wire (WPLSoft and ISPSoft) 2. Direct Link function trough Ethernet (WPLSoft and ISPSoft) Exactly the same feature is available with the new DOP-B HMI’s with Ethernet embedded, really helpful for remote support. 3. Direct Link function trough USB host (WPLSoft only). All systems are Win XP / Win 7 compatibles, so now there’s no reason to do not communicate with Delta PLC.

The CPU modules for the IS1+ framework bolster the most well-known correspondence conventions, for example, PROFIBUS DP, PROFINET and EtherNet/IP. Copper links or fiber optics are utilized for correspondence, and framework excess can likewise be included. The power module gives a naturally protected power supply and, similar to some other module, can be associated and detached in perilous regions. IS1+ CPU and power modules supply up to 16 I/O modules with naturally safe power and associate with all regular computerization frameworks. RS485, or RS485-IS in Zone 1, is utilized for imparting by means of PROFIBUS DP and Modbus RTU. Quick, obstruction free "Ex operation is" 100 MBit/s fiber optics are utilized for the Mechanical Ethernet association by means of Modbus TCP, EtherNet/IP and PROFINET. Framework excess or reconciliation into an optical ring to expand accessibility can likewise be upheld, contingent upon the convention. An extensive variety of diagnostics is accessible either through a different administration transport or by means of the important procedure transport. These diagnostics can be effortlessly incorporated into plant resource the executives frameworks by a powerful DTM. Information transmission for PROFIBUS DP V0/V1 HART, Modbus RTU, Mechanical Ethernet with Modbus TCP, EtherNet/IP, PROFINET Extensive variety of diagnostics and HART straightforwardness for coordination into plant resource the board frameworks by means of administration transport and DTM "Ex I" naturally protected or "Ex operation is" intrinsically sheltered fieldbus interface for adaptable use in perilous territories

There are several good reasons to convert your project from ProTool to WinCC Flex. Many current Siemens HMI panels do not support ProTool. When configuring the HMI project for the newer panel, you may find ProTool is unable to be configured to support the panel. Siemens no longer supports ProTool. ProTool was phased out in 2004, with support ending in 2010. WinCC Flex/Portal support a huge number of new features. These features can greatly reduce the time it takes to program your HMI, as well as open up opportunities to use a number of new features. Be aware that when you begin the conversion process (with WinCC Flex), you will need WinCC Flex SP2 or earlier. In WinCC Flex SP3, the option is no longer available to convert a ProTool project.   Converting the Program Open WinCC Flex (SP2 or earlier). If you’re not sure, in WinCC Flex, select Help > About, and check the version number. Photo of WinCC Flex SP2 or earlier Select “Open a ProTool project”. If you do not see this option, the version of WinCC Flex you have is SP3 or newer. Photo of a ProTool project On the left browser bar, select “STEP 7”. This will allow you to select a project you’ve previously opened in Simatic Manager. You can also browse to the project (via My Documents) if you know the project path. Photo of selecting STEP 7   Browse to the correct project, and select the ProTool project you wish to convert. Success! This will open the project in WinCC Flex. Make sure to perform a rebuild all and fix any errors that may have occurred during the conversion process. Bonus Tip If you need to convert an old project because you’ve upgraded your HMI, you don’t need to recreate the whole project. Simply upgrade with the old project, then right click on the panel in WinCC Flex, and select “Change Device Type”.