# Tech Note : CODESYS Memory Usage Tool

**URL:** <https://www.wago.community/t/tech-note-codesys-memory-usage-tool/877>\
**Category:** CODESYS\
**Tags:** pfc200, pfc100, tp600, cc100\
**Created:** [April 10, 2024, 11:17pm UTC](https://www.wago.community/t/tech-note-codesys-memory-usage-tool/877 "2024-04-10T23:17:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MikePsaltis](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/mikepsaltis/32/47_2.png) [@MikePsaltis](https://www.wago.community/u/MikePsaltis)\
**Post date:** [April 10, 2024, 11:17pm UTC](https://www.wago.community/t/tech-note-codesys-memory-usage-tool/877/1 "2024-04-10T23:17:01Z")

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Quick tip for checking the memory usage of a controller in CODESYS v3.5

Found under View --\>View Memory Usage. This will also show the size of the memory area for variables and arrays defined in the program.

 ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/267fc4b9c2fe8f9eb338b4616acf70a354ca7e1a.png)

![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/2309e1d4d37e2ae3d37612831a7b677e7c8d6d78.png)

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**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\
**Post date:** [April 11, 2024, 6:43am UTC](https://www.wago.community/t/tech-note-codesys-memory-usage-tool/877/2 "2024-04-11T06:43:06Z")

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I would like to add:  
Area 0 contains: Data, Input, Output and Nonsafe Data  
Area 1 contains: Memory  
Area 2 contains: Code  
Area 3 contains: Retain Data and Persistent Data