In our continuation of the Stuxnet virus discussion, this lesson takes up where the last left off. We made you aware of what the Stuxnet virus does, how it manipulates data, and how that manipulated data gets to the HMI. In this lesson, we’re going to tell you what to look for in your code as well as show you how to determine if this virus has invaded your PLC. In order to find out if it has, we will make use of a tool that has been discussed in a previous lesson. Open up this lesson and do some virus scanning of your own.
In the previous few lessons, we have been discussing the Stuxnet virus. The first virus of its kind. A virus that was created to target the automation industry and specifically, a Siemens PLC running a nuclear enrichment facility. In this lesson, we continue the discussion on the Stuxnet virus an...
There may come a time in your career that you are looking at your program and see that some transmitter that should be reading a value is currently showing nothing. After troubleshooting you may have determined that the channel that the transmitter is connected to is fried. When that occurs, whet...
In some previous lessons, we have discussed the many tools used within the TIA Portal programming environment. In this lesson, we are going to discuss the Cross Reference tool again but using the previous programming environment of Step 7. Cross-reference is a very useful function that works to f...
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