Left Rotation Of 32-Bit Data: Drol, Drcl - Mitsubishi Electric MELSEC Q Series Programming Manual

5 SEQUENCE INSTRUCTIONS FOR MOTION CPU

5.4.28 Left rotation of 32-bit data: DROL, DRCL

Setting
data
X Y M
(D)
n
[Setting data]
[Function]
Bit device
SM F T C D
[Instruction]
Command
DROL
Command
DRCL
Setting data
(D)
n
(1) Left rotation of 32-bit data (Not include the carry flag) (DROL)
• The 32-bit data of the device designated at (D), not including the carry flag, is
rotated n-bits to the left. The carry flag turns ON or OFF depending on its status
prior to the execution of the DROL instruction.
Carry flag
(SM12)
• Specify any of 0 to 31 as n. If the value specified as n is out of range, the
remainder of n /32 is used for rotation. (As n is BIN 16 bits unsigned value.) For
example, when n=34, the contents are rotated two bits to the left since the
remainder of 34 / 32 = 1 is "2".
Usable device
Word device
W T C SD Z
DROL
DRCL
Number of device where left rotation data is stored. (BIN 32 bits)
(D)+1
b31 b30b29
n-bit rotation
5 - 65
Constant Pointer Level
K H P N
(D) n
(D) n
Description
Times (0 to 31)
(D)
b16b15 b2 b1 b0
Digit
desig- Index
nation
: Usable