ROR

Bitwise rotation of an operand to the right: A:= ROR (IN, N)A, IN and N should be of the typeBYTE, WORD or DWORD. IN will be shifted one bit position to the right N times while the bit that is furthest to the right will be reinserted from the left.

Please note, that the amount of bits, which is regarded for the arithmetic operation, is pretended by the data type of the input variable! If the input variable is a constant the smallest possible data type is regarded. The data type of the output variable has no effect at all on the arithmetic operation.

See in the following example in hexadecimal notation that you get different results for erg_byte and erg_word depending on the data type of the input variable (BYTE or WORD), although the values of the input variables in_byte and in_word are the same.

Example in ST:

Example in IL:

Var1 :BYTE;

LD 2#1001_0011

ROR 3

ST Var1 (* Result is 2#0111_0010 *)