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| 1/20/2010 4:07 AM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating:
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Hello has100, In this manual you can find detailedinformation about all organization blocks. Some organization blocks are used for programming (like cyclic, timed delayed and hardware interrupts)and some are used forerror handling and I think you are more interested in error handling OBs. Am I right? For more info on which OBs you need for error handling,checkWhich organization blocks do you need for error handling?. To know which OBs can be triggered (simulated) in PLCSIM, you should read the following FAQs: What is the difference between S7-PLCSIM and a "real" automation system? Which components are not supported by S7-PLCSIM V5.4 SP3? I can't give you examples at this time because I don't know what you are planning to do. Do you just want to evaluate starting info of error OBs or you want to take some actions based on some situations? I don't know what you want to do but in most of cases you will need to read the starting information (1st 20 bytes in local data) and evaluate these bytesbysome comparisons according to the values you already know (read the helpof each OB you need). I could find a very basic example. Although it's written in STL but I'm sure you will find it easy to understand. How can you evaluate a power supply error - e.g. battery failure? I must admit thatrequirements vary from one industrial sector to another but in most of times I just needed to evaluate error OBs and display important data on HMI and in just few cases I had to take some actions based on data evaluation of error OBs. So, if you are not going to take some decisions and will be satisfied with just reading information, then I recommend to use RSE(Report System Error)which evaluates error data for you and put it automatically in your HMI (if you use WinCC flexible or WinCC). How can you have system error messages from a SIMATIC S7-300 / 400 displayed in WinCC flexible? Best regards. H-H |
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