Hello everyone, I’ve encountered some unexpected behavior while working with arrays in Automation Runtime. When accessing an index outside of the declared array bounds, I don’t get any runtime error. Instead, the program reads the value from the next memory location. Moreover, it is also possible …

Hello, it is correct that the default Settings are not sending an Error when going out of Array bounds. It is mandatory that the Developer takes care of the Array Index to be inside of the bounds. If you want to check your Applikation for Array Bound errors. You can use the IEC_CHECK - Library. […

While running the program, I was repeatedly encountering a seemingly random runtime error: “Memory access violation occurred” I now have a better idea of what to investigate first. Thanks for the guidance!

Hello, You may have also a look here. [image] Troubleshooting Page Faults How-To & Wikis 1 Overview 1.1 What is a page fault? The processor throws an exception to the operating system if it tries to access an invalid or protected memory location. The B&R opera…

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michael.bertsch (Michael Bertsch) March 30, 2026, 11:34am 4

Hello,

You may have also a look here.

Greetings
Michael

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