How to Change the MPI Node Address For a Siemens S7-300 PLC

I have seven Siemens S7-300 PLCs connected together using the MPI (Multi Point Interface) interface. The Siemens MPI protocol is used by Siemens PLCs to communicate with external devices. I want to rename each of the seven PLCs. Here are the steps to accomplish that task.

First, connect your MPI cable to the first PLC. I will be connecting my laptop to each PLC individually. Power up the PLC and open Simatic Manager. The "New Project" Wizard window will open. Just click Cancel to close the window. Now click the Accessible Nodes icon on the toolbar. A window will open showing the identification of the PLC you are connected to. My window is showing MPI = 2 (directly). Make a note of this address and close the window.

Next we need to download a hardware configuration to the PLC. This is where we will rename the PLC node address. There are probably a couple of different ways to do this – following is how I accomplish this. All seven of my PLCs are the same model; Therefore, I am using the same hardware configuration. For the obvious reasons, I want to give each a different MPI node address. I have a project file that contains all seven of my PLC programs and one hardware configuration file. I open the one hardware configuration file, and then double click Hardware in the right hand window. This will open the HW Configuration window. In this window you should see your PLC with its MPI address given.

Remember when we clicked the Accessible Nodes icon and saw MPI = 2 (directly)? My Hardware Configuration Window is showing a MPI address of 7. Place your mouse cursor on the 7 and double click. Your CPU Properties window will open. It should open to the General tab. Look down and you will see Interface Type MPI with an address of 7. Click Properties and the MPI interface Properties window will open. Using the pull down menu, choose your MPI node address and make sure the MPI (1) 187.5kbps is highlighted and click OK. You are now back on the CPU Properties window where you will see your address has changed. Click OK and you will go back to the Hard Ware window where you can verify your MPI node address has changed.

You will now click the Save and Compile icon and then click the download icon. The Select Target Module window will open. Click OK and the Select Node Address window will open. Here you will see the MPI node address you assigned earlier. You will need to click the View button right below this. You will see the current node address appear, this should be the same as what you saw earlier when you clicked the Accessible Nodes icon. Simply click on this number and you will see it appear in the MPI address slot under the Enter connection to target station. Click OK and the Download to Module window will open. Click OK and the Stop Target Modules window will open. Click OK and the "Do you want to start the module?" Window will open. Click Yes.

Now go back to the SIMATIC Manager window and click the accessible nodes icon. You will see your new MPI node address. You can see this same article with pictures at .

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How Car Mechanics Use Technology

Do you know why it’s important to find a good mechanic or a good repair shop to repair your car? The reason: it could save you hundreds of dollars in parts and labor! When we say a “good mechanic” or a “good repair shop”, we’re referring to mechanics who are equipped with the latest technology. You don’t want to entrust your car to a shop with outdated machinery and equipment because it will take longer to arrive at a diagnosis. And the longer a mechanic takes to make a diagnosis, the larger your bill for labor!

Remember that car mechanics charge by the hour.

Car repairs can cover any one or a combination of the following (note that this is not a complete repair list).

• Air conditioning checks

• Air bag checks

• Electrical wiring

• Cables

• Clutch service and repair

• Transmission repair

• Wheel Alignment

• Suspension

• Brakes

• Heating system

• Oil and lubrication

• Battery

• Power windows

Much of the troubleshooting that mechanics use to diagnose a problem is facilitated by car repair technology.

Ever noticed how some lights on your panel come on when something’s wrong? In most cases, an experienced mechanic will know immediately what the problem is, but there are instances where it will take sophisticated technology to lead to an accurate diagnosis.

Sophisticated technology comes in many forms and one popular one is troubleshooting software. Companies like Auto Tech have a software program that car owners can use to find out what is ailing their vehicle.

Most car owners who were cynical about software programs before should seriously consider purchasing a reliable car troubleshooting software program. For instance, some programs start out by asking you to input your car make and model number, the year of the car and what kinds of equipment it has. The software features a large database of information about all cars in the market and a car owner simply follows the steps when prompted. It employs what the industry calls a “tree diagnosis” where logical steps take you through the entire diagnosis process.

After you’ve keyed in your car’s profile, you use the drop down menu to choose the symptoms that your car is exhibiting. For instance, if you choose “squealing brakes”, the program mimics the squealing of brakes and if that’s the sound you hear, you confirm it and the program recommends a series of steps.

You may not really want to use a troubleshooting software, but imagine how much time and money you could save if you spoke to the mechanic intelligently, letting him know that you’re in the know.

Students who are studying towards certification buy certain tools of the trade. A couple of examples are Snap On and Mac Tools. These two are the most popular in the United States and Canada.

Mechanics now have a wide range of technology tools to help them understand car problems better: digital multimeters (electronic measuring), boroscopes (testing heat exchangers), fuel diagnostic testers (testing and balancing fuel injectors) and other such new technologies.

New car mechanic technologies help shorten the learning curve and speed up diagnosis so that the car owner isn’t saddled with too many labor hours.

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Medical Coding History – From Paper to Medial Coding Software

If we define medical coding as the assignment of alphanumerical characters to diagnoses, diseases, and treatments, then medical coding has been traced back to the 1600s in England with the London Bills of Mortality. A more standardized system of coding was developed for classifying death at the tail end of the 19th century. In 1893, Jacque Bertillon, a statistician, created the Bertillon Classification of Causes of Death, a system which was eventually adopted by 26 countries at the beginning of the 20th century. Shortly after the Bertillon Classification system was implemented, people began discussing the possibility of expanding the system beyond mortality as a way of tracking diseases.

By the middle of the 20th century, the World Health Organization (WHO) adopted a goal of a single global classification system for disease and mortality, entitled the International Classification of Diseases, Injuries, and Causes of Death (ICD). This classification system is updated every 10 years. The latest revision, ICD-10, is scheduled for adoption in the United States in 2013.

What started out as a small set of medical codes has evolved into a complex system that was initially standardized by the American Medical Association back in 1966 with current procedure codes (CPT) codes that are updated annually.

In the late 1970s, the Healthcare Common Procedure Coding System (HCPCS) was developed based on CPT. HCPCS has three levels of codes: Level One is the original CPT system. Level Two codes are alphanumeric and include non-physician services such as ambulances and other transportation as well as patient devices such as prosthetic devices. Level Three codes were developed as local codes, and were discontinued in 2003 in order to keep all codes relevant worldwide.

Recently, medical coding systems have been expanded to include other medical specialties. For example, there are coding systems related to disabilities, the dental field, prescription drugs, and mental health.

As the coding systems have become more complex and diverse, the need for training of medical coders has grown exponentially. Private training schools and public colleges throughout the country have developed certification programs. In order to be awarded a certificate, students must obtain a two-year degree from an accredited medical coding school and pass an exam given by the AHIMA.

Over the past 20 years, many coding processes have shifted from a paper-based system to a computer-based system using medical coding software and medical billing software. Many companies sell complete medical software-based coding solutions and myriad of products for specific medical disciplines, such as products that are specifically tailored to skilled nursing facilities, physicians, hospitals, surgery, cardiology, and more.

As medical facilities and professionals begin preparing for the conversion to ICD-10 in 2013, the need for more sophisticated medical coding software solutions and qualified medical coders will continue to grow.

CPT is a registered trademark of the American Medical Association.

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Who Invented Dell Computers?

The invention and the history of the Dell computer is quite interesting. First of all, it was in 1984 when Michael Dell, a student at the University of Texas at Austin, created the company PC's Limited. He only had a starting capital of $ 1,000. So what he did was started working out of his dorm room to build personal computers made from stock components. These computers were to be IBM compatible because that was the standard at that time. If a computer were to function with various pieces of hardware, it needed to be IMB compatible.

It is when Michael Dell figured that selling computers directly to customers to determine customer need that he dropped out of college. His family then extended him the $ 300,000 in expansion capital that he needed to make his business take off.

A success

It was in 1985 that the Turbo PC was developed and it sold for less than $ 800. It contained an Intel 8088 processor that ran at 8 MHz, which is significantly slower than the computers that we use today. Computers today are running in gigahertz, which are hundreds and even thousands of times faster than the 8 MHz processor that Michael Dell was installing in his computers at the time. But the truth is that this was the best that could be done in 1985. The technology was developing.

But there was an aspect of PC's Limited that was unique from the rest and continues to be this way today. It is the fact that customers could order their computers rather than buy a computer that was already assembled. This allowed individuals to receive computers at lower prices than what they could get with their competitors. This definitely worked because PC's Limited grossed $ 73 million in its first year of trading.

The beginning of Dell

It was in 1988 that PC's Limited became Dell. Prior to that, the company already had 11 international operations occurring, so the company was quite large. There were on site services set up to compensate for the lack of businesses acting as service centers for Dell computers. It was in 1990 that Dell attempted to sell through club houses, but had very little success with this. So it is then that Dell went right back to its direct to customer sales.

In 1996, Dell started selling computers on its website. An individual could go onto the website and custom design their computer so that it would be built to their specifications. From there, it would be shipped to the customer's home. Financing was made available so that individuals would be able to acquire their computers easily.

In 1999, Dell became the largest personal computer seller when they took over Compaq computers. Their revenue topped $ 25 billion in 2002. Also in 2002, Dell started selling televisions and other electronic items. They now have Dell brand printers, LCD TVs, and much more. Because of the expansion beyond computers, Dell was changed to Dell Inc. In 2003.

It is amazing that this billion dollar company started in a dorm room with $ 1000 in starting capital. And Michael Dell has always stood by the principles of letting individuals have the capability to design their own machine. Although there are Dell computers now sold in various retail outlets, a person can still go to the website and design the machine of their dreams. And Dell also offers a lot of assistance for individuals needing help with their computers. They offer on-site services and so much more for the computer user so that they can have the best experience possible.

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Microsoft Access and Medical Private Practice

For physicians medical office software installation could be nerve-wracking, not because they want to avoid electronic medical records, but because the majority of the software packages are too complicated and very expensive for them.

The good news is, you can make your medical office software system uncomplicated and relatively easily maintained with one of the popular database software packages being used today, the Microsoft Access.

Microsoft Access is a relational database system developed by Microsoft. Microsoft Access is one of the easiest and most flexible database management solutions for the medical office and provides data validation and user-friendly features on data entry screens. It has been the dominant lightweight database system used for the last decade and has continued to grow with additional features. Access is a productive and very customizable solution for small medical practices and comes with MS Office (or standalone). However the next step up in a medical environment would be MS SQL Server but small medical offices usually only has need of a lightweight application and the added functionality with MS SQL Server, comes with a heavy price.

With this relational database system you can be up and running in one hour, which means that it is not necessary for your practice to spend lot of money to purchase, configure, update and maintain an SQL Server solution. Microsoft Access includes without any additional costs, points of integration with popular software packages including: Microsoft Word, Excel & Outlook and provides a free runtime version.

MS Access network setup is very easy. A medical office with 2-8 users is up and running within ten minutes, while installation and application maintenance is extremely simple. Virtually any user with a basic knowledge of Microsoft Access can handle all maintenance procedures without the assistance of IT personnel.

Keep also in mind that SQL Server is the flagship database system from Microsoft and it is suitable for use in environments with up to thousands of users. Microsoft Access can handle 2- 8 users and it is limited to 2 GB data storage.

We are convinced that the best way for private medical offices around the world to enter the world of electronic medical records is to purchase a professionally designed but inexpensive and affordable Microsoft Access based software solution.

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Best Windows 7 Optimizer That Can Stabilize and Improve Your Computer Performance

A system optimizer is a software designed to maintain the performance of your computer, fix software related problems and keep your computer stable and secure. The need of a system optimizer software in Microsoft Windows7 operating system is high. This is because Windows 7 itself is unable to maintain all the mentioned aspects without the help of third-party products.

We are going to learn what exactly Windows 7 optimizer software is.

The best Windows 7 optimizer software shall include all the following features:

1. Registry Cleaner to fix the registry related issues

2. System Cleaner to clean unnecessary stuff and free-up the disk space

3. Registry Defragmenter to defrag the system registry

4. Startup Manager to control the programs running when you turn on your computer

5. Backup & Restore feature to restore unfavourable registry changes

“Registry Cleaner” to Fix the Registry Related Issues

Windows Registry is a vital component in Microsoft Windows 7. It contains information stored by your operating system and installed software. For example, the default settings, changes you made to your computer, system information, runtime data, etc. are stored.

Registry Cleaner is a software that finds the junk entries in the registry, and repairs them as far as possible. Unfortunately, Windows 7 does not include a built-in registry cleaner. The registry cleaner software included in the best Windows 7 optimizer lets you scan the genuine registry problems and correct them. It thereby helps avoiding many runtime errors and problems, such as, File Not Found, etc.

“System Cleaner” to Clean Unnecessary Stuff and Free-Up the Disk Space

A System Cleaner software lets you find the files and stuff that have unnecessarily occupied the hard disk space.

The tasks, like installing a program, uninstalling, repairing or updating the existing programs, and even just running the installed programs many times create temporary files, log files that need not be kept after the corresponding operation is performed. Sadly, many programs do not itself delete such files and stuff and thus your hard disk space is used for such unproductive stuff. Using a system cleaner software included in best Windows 7 optimizer, you can easily and safely delete such temporary stuff.

“Registry Defragmenter” to Defrag the System Registry

You know the importance of the registry in Windows 7 operating system, as already discussed. The continuous access of a number of programs to the registry results in its fragmentation. It reduces the system performance and freezes your computer.

The best Windows 7 optimizer software includes a registry defragmenter that enables analyzing the registry fragmentation and afterwards defrags it. A reboot is required to perform this process and all other running programs and services must be terminated.

“Startup Manager” to Control the Programs when you Turn on your Computer

Running too many programs at the Windows startup, results in system freezing and slow performance. A Startup Manager, included in best Windows 7 optimizer, lets you monitor and control the programs that run each time your computer is started. It lets you disable or delete the unwanted program entries and enable only those who are necessary.

Backup & Restore Feature to Restore the Unfavourable Registry

While doing all the above steps, care must be taken that you have followed some precautionary measures first, so that any unfavourable registry change can be later restored and unwilling situations can be easily avoided. The best Windows 7 optimizer should include such a feature.

Best Windows 7 Optimizer Recommended by Worldwide Experts

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Examples Of Spyware And What They Are

Spyware is a general term used to describe software that performs certain behaviors such as advertising, collecting personal information, or changing the configuration of your computer, generally without appropriately obtaining your consent first.

Spyware is often associated with software that displays advertisements (called adware) or software that tracks personal or sensitive information.

That does not mean all software that provides ads or tracks your online activities is bad. For example, you might sign up for a free music service, but you “pay” for the service by agreeing to receive targeted ads. If you understand the terms and agree to them, you may have decided that it is a fair tradeoff. You might also agree to let the company track your online activities to determine which ads to show you.

Other kinds of Spyware make changes to your computer that can be annoying and can cause your computer slow down or crash.

These programs can change your Web browsers home page or search page, or add additional components to your browser you don’t need or want. These programs also make it very difficult for you to change your settings back to the way you originally had them.

The key in all cases is whether or not you (or someone who uses your computer) understand what the software will do and have agreed to install the software on your computer.

There are a number of ways Spyware or other unwanted software can get on your computer. A common trick is to covertly install the software during the installation of other software you want such as a music or video file sharing program.

Any software that covertly gathers user information through the user’s Internet connection without his or her knowledge, usually for advertising purposes. Spyware applications are typically bundled as a hidden component of freeware or shareware programs that can be downloaded from the Internet; however, it should be noted that the majority of shareware and freeware applications do not come with SpyWare. Once installed, the Spyware monitors user activity on the Internet and transmits that information in the background to someone else. Spyware can also gather information about e-mail addresses and even passwords and credit card numbers

Aside from the questions of ethics and privacy, SpyWare steals from the user by using the computer’s memory resources and also by eating bandwidth as it sends information back to the spy ware’s home base via the user’s Internet connection. Because SpyWare is using memory and system resources, the applications running in the background can lead to system crashes or general system instability.

Because SpyWare exists as independent executable programs, they have the ability to monitor keystrokes, scan files on the hard drive, snoop other applications, such as chat programs or word processors, install other SpyWare programs, read cookies, change the default home page on the Web browser, consistently relaying this information back to the SpyWare author who will either use it for advertising/marketing purposes or sell the information to another party.

Licensing agreements that accompany software downloads sometimes warn the user that a SpyWare program will be installed along with the requested software, but the licensing agreements may not always be read completely because the notice of a SpyWare installation is often couched in obtuse, hard-to-read legal disclaimers.

Examples of SpyWare

These common SpyWare programs illustrate the diversity of behaviors found in these attacks. Note that as with computer viruses, researchers give names to SpyWare programs which may not be used by their creators. Programs may be grouped into “families” based not on shared program code, but on common behaviors, or by “following the money” of apparent financial or business connections. For instance, a number of the SpyWare programs distributed by Claria are collectively known as “Gator”. Likewise, programs which are frequently installed together may be described as parts of the same SpyWare package, even if they function separately.

o CoolWebSearch, a group of programs, takes advantage of Internet Explorer vulnerabilities. The package directs traffic to advertisements on Web sites including It displays pop-up ads, rewrites search engine results, and alters the infected computer’s hosts file to direct DNS lookups to these sites.

o Internet Optimizer, also known as DyFuCa, redirects Internet Explorer error pages to advertising. When users follow a broken link or enter an erroneous URL, they see a page of advertisements. However, because password-protected Web sites (HTTP Basic authentication) use the same mechanism as HTTP errors, Internet Optimizer makes it impossible for the user to access password-protected sites.

o Zango (formerly 180 Solutions) transmits detailed information to advertisers about the Web sites which users visit. It also alters HTTP requests for affiliate advertisements linked from a Web site, so that the advertisements make unearned profit for the 180 Solutions Company. It opens pop-up ads that cover over the Web sites of competing companies.

o HuntBar, aka WinTools or Adware,WebSearch was installed by an ActiveX drive-by download at affiliate Web sites, or by advertisements displayed by other SpyWare programs-an example of how SpyWare can install more SpyWare. These programs add toolbars to IE, track aggregate browsing behavior, redirect affiliate references, and display advertisements.

oZlob Trojan or just Zlob, Downloads itself to your computer via ActiveX codec and reports information back to Control Server. Some information can be as your search history, the Websites you visited, and even Key Strokes.

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Strengths and Weaknesses of Waterfall Approach for Software Development

One of the most famous and widely used approaches for software development is the waterfall model. Waterfall approach is an old technique that has been in use for quite some time, but in modern times agile approach is gaining prominence.

Waterfall approach, as is evident from the name, refers to a systematic approach where one step comes after the other. It cannot go the other way round. The process works like the waterfall effect that flows in one direction, which is from up to down.

In this process the life cycle of the development process is predetermined. All the steps are defined before the start of the project. The approach is predictive, where the team is well aware of the order of each step and therefore works accordingly. It starts from the requirement analysis, the design phase and then proceeds on to the implementation, testing and the maintenance phases.

The waterfall approach can be quite beneficial for those who are quite clear on their requirements. A planned approach works for them because they want fixed processes and budget. Where fixed processes are beneficial, at the same time they can be inconvenient at times. In cases where the client is not clear on the requirements and finds in the middle of the project that he/she wants to change course, this approach can prove to be quite problematic.

Another point of the waterfall approach is that the requirement analysis and design of architectural structure can consume a lot of time. Extensive research is done initially as the next phases depend completely on the planning strategy. However, the good thing is that everything is thoroughly worked out and each aspect is studied beforehand. The developers in such cases know what is expected of them.

A waterfall approach works in a systematic order, with one step following the other and the testing phase comes in the end. If there are any big problems encountered in the testing phase, it means a long process to make the amends. The process can consume extra time and money.

We cannot conclude that one approach is better than the other, as every method would have its own strengths and weaknesses. The determination of success for each method depends on how it is being used and whether the approach suits the scope of work being undertaken. While one approach may be suitable for a particular project, it might become totally useless under different circumstances. For example, some believe that agile methods are not well suited for offshore development, as they require a closer contact and communication that is not possible in an offshore project.

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How to Fix an Error Accessing the System Registry Easily

The system registry is an important component to practically every computer, and it would actually be considered a pile of electronics if the system registry was not included. It is essential for computers based on Windows, since it is the storage location for the hardware, software, and pretty much everything that makes the computer run.

Changes and updates go directly through the system registry for storage, but sometimes things do not always go as smoothly as we wish. Not many know what to do about an error accessing the system registry, but it must be fixed in order to keep your computer running.

An error accessing the system registry is not very uncommon, and it usually occurs when old files or updates are still located within the registry. The error can occur when new updates are downloaded, new programs installed, or even when new software is being added to your computer. A window will usually pop up stating “error accessing the system registry” and not much can be done until the error is fixed.

It can result from old updates being left in the system, or even old files that were not deleted when a download or installation was incomplete. The best way to get rid of the error accessing the system registry is to find out the problem, get rid of old files, and start fresh with new updates and software to keep your computer running smooth.

Because the error accessing the system registry can occur for a number of different reasons, it can sometimes be hard to locate the specific problem. The first step is to determine what exactly triggered the error, such as a new download, new software being installed, or updates occurring to current software on the computer.

The error is most common when updates occur or when updated software is installed, since most likely older versions are still being kept within the registry. In this case, the error accessing the system registry can be easily correct. First off, the installation or update needs to be stopped. Then the system registry can be accessed by the computer owner, and software can be purchased or downloaded to fix this problem.

One of the best options for getting rid of an error accessing the system registry is a registry fix program, since it goes in and does all of the work for you. Rather than trying to find the damaged files and delete them yourself, the program knows exactly what to look for and get rid of for the error to go away.

Not only will a registry fix help to get rid of the problem occurring now, it can even help to get rid of any files and old updates that may cause problems in the future. It is beneficial for clearing your computer of any unnecessary files or programs that may be causing it to run slow, and can even prevent an error accessing the system registry in the future.

A registry fix program can either be downloaded online or purchased at an electronics store, and is a great way to fix an error accessing the system registry. It does all of the work for you, and can even improve the overall performance of your computer. It can get rid of old files, partial updates, or even programs that are no longer needed, and is perfect for fixing your error accessing the system registry.

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The Leading Gaming PC Cases Are Essential To Help Protect and Power Your Extreme Gaming Hardware

Gaming PC Cases come in a variety of shapes and sizes. From rack mount to ATX tower casing, you can find one that best suits your gaming needs. Many games are played by as many 15-24 users and such games require the power of hardware to control both the graphics and many millions of instructions to the CPU with great speed. Custom Gaming PCs are the current rave with game lovers who strive for a better playing experience, adding more hardware.

With a large variety of casing, it is confusing to choose the right one. A good PC Case for gaming is one that has ample space to add more fans and USB ports. Heating is the main problem that slows down the PC and in some instances can damage it. Looks also matter a lot, an attractive and next-gen look, makes for a better playing experience.

All gaming PC cases come with microphones and headphone sockets, while the more advanced ones have fan controllers. New game players can do with two fans while some want to get additional fans to keep the PC from heating up. More advanced users utilize much of CPU power, and need more cooling.

When you are ready to buy a case, first look at the price options, compare various makes and models and see where you can save money and get the same functionality. The most accommodating case is considered the best. It will allow for more fans, and offers ample space for advanced graphic cards. Check to see, if the case can allow more than 4 fans and has at least two USB ports.

Some cases come with 4 USB ports and have space for up to six fans. If you are an advanced level player, you may want to consider one that has a fan speed controller, so you can monitor the cooling easily. Further up the ladder, there are cases that come with space for as many as 12 hard drives. Such a case, can take any kind of mother board you want to use.

The ATX are more popular these days and are like the industry standard. ATX form-factor allows for better air passage so all components can stay cool. It uses less cable, generates less heat and is more affordable. The expansion slots are easily accessible making it easy for users to add more graphic cards.

Looks wise, a clear panel looks attractive and spices up the computer using LEDs. There are also cases with bright graphics, and a modish look to add to the adventure. It all depends on your game choice, if you like a good thrill considering Gaming PC Cases that will add excitement to game time.

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