Hi georkueh, Please see attched link below one more. As I know, normally PLC will have two seperate areas, one for system memory area which will contain system registors for keeping some spectial registers or/and other such as clock, always on bit .... the other one is user memory area which will use for variable defination, application.... I dont know exactly this concept is still remain in our ctrlX or not. If yes, please share with me. Thank you! https://product-help.schneider-electric.com/Machine%20Expert/V1.1/en/m241prg/m241prg/M2xx_-_Memory_Mapping/M2xx_-_Memory_Mapping-3.htm
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