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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
11 Rotation and Shift Operation – FNC 30 to FNC 39
11.4 FNC 33 – RCL / Rotation Left with Carry
11
FNC30-FNC39
Rotation and
Shift
12
FNC40-FNC49
Data Operation
13
FNC50-FNC59
High Speed
Processing
14
FMC60-FNC69
Handy
Instruction
15
FNC70-FNC79
External FX I/O
Device
16
FNC80-FNC89
External FX
Device
17
FNC100-FNC109
Data
Transfer 2
18
FNC110-FNC139
Floating Point
19
FNC140-FNC149
Data
Operation 2
20
FNC150-FNC159
Positioning
Control
11.4 FNC 33 – RCL / Rotation Left with Carry
Outline
This instruction shifts and rotates the bit information leftward by the specified
number of bits together with the carry flag.
1. Instruction format
2. Set data
*1. Do not set a negative value to the number of bits to be rotated.
3. Applicable devices
S: In 16-bit operations, K4Y{{{, K4M{{{ and K4S{{{ are valid.
In 32-bit operations, K8Y{{{, K8M{{{ and K8S{{{ are valid.
Explanation of function and operation
1. 16-bit operation (RCL and RCLP)
"n" bits out of 16 bits of and 1 bit (carry flag M8022) are rotated leftward.
The carry flag is intervened in the rotation loop. If M8022 has been set to ON or OFF before the rotation instruction, the
carry flag is transferred to the destination.
Operand Type Description Data Type
Word device number storing data to be rotated leftward 16- or 32-bit binary
n
Number of bits to be rotated
[n ≤ 16 (16-bit instruction), n ≤ 32 (32-bit instruction)]
*1
16- or 32-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD.b KnX KnY KnM KnS T C D R U\G VZModifyKH E ""P
SSS33333333
n 33 33
16-bit Instruction
5 steps
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
RCL
RCLP
DRCL
DRCLP
Mnemonic Operation Condition
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
P
FNC 33
RCL
D
D
D
D
Command
input
FNC 33
RCLP
nD
1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1
0
High order Low order
Carry flag
b15b14b13b12b11b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Before shift b15 to b13Before shift b11 to b0
High order
1 1 1 0 1 1 1 1 0 0 0 0 0 0 0 0
Low order
1
Leftward
rotation
b15b14b13b12b11b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
When M8022
is ON
b15 to b13 (16
−
n+1) and the head
bit indicating the carry flag ON/OFF
status are moved.
After the
instruction is
executed once
The status
of the final
bit b12 (bit
"16
−
n") is
stored.
"n" bits (in the case of K4)
b15 to b12
(16
−
n) are
moved.
"n" bits
Carry flag M8022
Before shift
Carry flag M8022
Before shift b12
Before
execution
After
execution