Implicit conversion from a signed type ‘<data type 1>’ to an unsigned type ‘<data type 2>’ : possible change of sign
符号冲突可能在隐式转换中丢失。
仅对包含相同符号的数据类型执行隐式转换。
PROGRAM PLC_PRG
VAR
i : INT;
b : UINT;
END_VAR
b := i;
--> C0195: Implicit conversion from a signed type 'INT' to an unsigned type 'UINT' : possible change of sign