Fnc 30 - Ror / Rotation Right - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
11.1 FNC 30 – ROR / Rotation Right
Outline
This instruction shifts and rotates the bit information rightward by the specified number of bits without the carry flag.
1. Instruction format
FNC 30
D ROR
2. Set data
Operand Type
D
n
*1. Do not set a negative value to the number of bits to be rotated.
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
D
n
1: In 16-bit operations, K4Y
In 32-bit operations, K8Y
2: This function is supported only in FX
Explanation of function and operation
1. 16-bit operation (ROR and RORP)
"n" bits out of 16 bits of
Command
input
FNC 30
RORP
• The final bit is stored in the carry flag (M8022).
• In a device with digit specification, K4 (16-bit instruction) is valid.
Before
execution
After
execution
294
Mnemonic
16-bit Instruction
P
ROR
5 steps
RORP
Word device number storing data to be rotated rightward
Number of bits to be rotated
[n ≤ 16 (16-bit instruction), n ≤ 32 (32-bit instruction)]
Digit Specification
1
, K4M
, K8M
3U
are rotated rightward.
D
D n
High order
b15b14b13b12b11b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
1 1 1 1 1 1 1 1 0 0 0 0
After the
instruction
is executed
once
Rightward
"n" bits
rotation
High order
b15b14b13b12b11b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0
Before shift
Before shift
b15 to b4
b3 to b0
11 Rotation and Shift Operation – FNC 30 to FNC 39
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Description
*1
Word Devices
Special
System User
Unit
1 1 2
and K4S are valid.
and K8S are valid.
/FX PLCs.
3UC
"n" bits (in the case of K4)
Low order
M8022
0 0 0 0
"n − 1" bits
b0 to b3 (n − 1) are moved.
Low order
Carry flag
M8022
The contents of
b3 are stored.
11.1 FNC 30 – ROR / Rotation Right
Mnemonic
32-bit Instruction
DROR
9 steps
DRORP
Con- Real
Index
stant Number
V Z Modify K H E
Carry flag
The status of the bit "n − 1" is
copied.
0
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Data Type
16- or 32-bit binary
16- or 32-bit binary
Others
Charac-
Pointer
ter String
" " P