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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
11.5 FNC 34 – SFTR / Bit Shift Right
11.5 FNC 34 – SFTR / Bit Shift Right
Outline
This instruction shifts bit devices of the specified bit length rightward by the specified number of bits.
After shift, the bit device is transferred by "n2" bits from the most significant bit.
1. Instruction format
2. Set data
*1. Do not set a negative value to the number of bits to be shifted rightward.
3. Applicable devices
S:"D.b" is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
Operand Type Description Data Type
Head bit device number to be stored to the shift data after rightward shift Bit
Head bit device number to be shifted rightward Bit
n1 Bit length of the shift data n2 ≤ n1 ≤ 1024 16-bit binary
n2
Number of bits to be shifted rightward n2 ≤ n1 ≤ 1024
*1
16-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 V Z Modify K H E ""P
333 3 S 3
33 3 3
n1 33
n2 33 33
S
P
FNC 34
SFTR
16-bit Instruction
9 steps
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
SFTR
SFTRP
−
−
Mnemonic Operation Condition
32-bit Instruction
S
D
S
D