F121_ROL

Rotates n bits of the 16-bit data specified by d to the left if the trigger EN is in the ON-state.

Parameters

Input

n (INT)

number of bits to be rotated

Output

d (WORD, INT, UINT)

16-bit area

Remarks

The following example rotates one bit to the left:

When n bits are rotated to the left,

• the data in bit position 16-n (nth bit starting from bit position 15) is transferred to the system variable sys_bIsCarry (carry-flag).

• n bits starting from bit position 15 are shifted out to the left and into the lower bit positions of the 16-bit data specified by d.