ISPSoft User Manual Struct_0 is a member under Struct_1. The Struct_1 memory size is shown as follows. The above area marked by the red circle is the memory size of Struct_0 as a member, which occupies 7 words. Struct_0 8-8 User-defined Member Data Type Memory(Bit) Name Name Struct 1 _ Str1 ARRAY [0..31] OF BOOL Str2 BOOL Str3 ARRAY [0..1] OF WORD Str4 DWORD Str5 ARRAY [0..1] OF Struct 0 _