IEC operator⮫ “Overview”: Bitwise NOT of a bit operand. The operand should be of the type BOOL, BYTE, WORD or DWORD.
Example in ST:
Var1 := NOT 2#1001_0011
Example in FBD:

IEC operator⮫ “Overview”: Bitwise NOT of a bit operand. The operand should be of the type BOOL, BYTE, WORD or DWORD.
Example in ST:
Var1 := NOT 2#1001_0011
Example in FBD: