Function - Rotate bits of a register to the right.


IN : ANY  register
NBR : ANY Number of rotations (each rotation is 1 bit)


Q : ANY   Rotated register


RorDiag.gif (1373 octets)


Arguments can be signed or unsigned integers from 8 to 32 bits.

In LD language, the input rung (EN) enables the operation, and the output rung keeps the state of the input rung. In IL language, the first input must be loaded before the function call. The second input is the operand of the function.

ST Language

Q := ROR (IN, NBR);

FBD Language

RorFbd.gif (1241 octets)

LD Language

(* The rotation is executed only if EN is TRUE *)
(* ENO has the same value as EN *)

IL Language:

Op1: LD  IN
     ROR NBR
     ST  Q

See also

SHL   SHR   ROL   SHLb   SHRb   ROLb   RORb   SHLw   SHRw   ROLw   RORw