Mitsubishi Electric M800VW Series Programming Manual page 307

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.7 Rotation Instructions
DROL, DROLP, DRCL, DRCLP: Left rotation of 32-bit data
Setting
Bit devices
data
X Y M L F
D
n
○ ○ ○ ○ ○
△ : Index qualification is not available for constant K/H.
[Instruction symbol] [Execution condition]
DROL, DRCL
DROLP, DRCLP
 Setting data
Setting data
D Head No. of the device to perform rotation
Number of rotations (0 to 31)
n
2 words (32 bits) are used for a word device.
 Functions
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 goes ON or OFF depending on its status prior to the execution of the DROL instruction.
Carry flag
(SM12)
b31 b30 b29 b28
 Specify any of "0" to "31" as "n". If the value specified as n is 32 or greater, the values of "D+1" and "D" become indefinite.
DRCL
 Rotates 32-bit data, including carry flag, at device designated by "D", n bits to the left.
The carry flag goes ON or OFF depending on its status prior to the execution of the DRCL instruction.
Carry flag
(SM12)
b31 b30 b29 b28
 Specify any of "0" to "31" as "n". If the value specified as "n" is "32" or greater, the values of "D+1" and "D" become indefi-
nite.
IB-1501667-B
Usable devices
B SB T SM V T C
○ ○
○ ○ ○ ○ ○
Command
Command
Meaning
D+1
b27 b18 b17 b16 b15 b14
n-bit rotation
D+1
b27 b18 b17 b16 b15 b14
n-bit rotation
Word devices
D R/ZR W SW SD Z K
○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○
D
b5 b4 b3 b2 b1 b0
D
b5 b4 b3 b2 b1 b0
286
Digit
Con-
Pointer designa- Index
stant
tion
H P
○ ○
indicates the signs DROL/DRCL
D n
P D n
Data type
BIN 32 bits
BIN 32 bits
△