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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
11.7 FNC 36 – WSFR / Word Shift Right
11.7 FNC 36 – WSFR / Word Shift Right
Outline
This instruction shifts word devices with "n1" data length rightward by "n2" words.
1. Instruction format
2. Set data
*1. Do not set a negative value to the number of words to be shifted rightward.
3. Applicable devices
S: This function is supported only in FX3U/FX3UC PLCs.
Explanation of function and operation
1. 16-bit operation (WSFR and WSFRP)
For "n1" word devices starting from , "n2" words are shifted rightward ([1] and [2] shown below).
After shift, "n2" words starting from are shifted to "n2" words starting from [ +n1-n2] ([3] shown below).
Operand Type Description Data Type
Head device number to be stored to the shift data after rightward shift 16-bit binary
Head word device number storing data to be shifted rightward 16-bit binary
n1 Word data length of the shift data n2 ≤ n1 ≤ 512 16-bit binary
n2
Number of words to be shifted rightward n2 ≤ n1 ≤ 512
*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 VZModifyKH E ""P
33333333 S 3
3333333 S 3
n1 33
n2 33 33
P
FNC 36
WSFR
16-bit Instruction
9 steps
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
WSFR
WSFRP
−
−
Mnemonic Operation Condition
32-bit Instruction
S
D
S
D
D
S
D
Command
input
FNC 36
WSFRP
n1 n2D
S
+2 +8
+2
n2 (in the case of "n2=3")
n1 (in the case of "n1=9")
[1]
Overflow (data to
be deleted)
+1
D
+7 +6 +5 +4 +3
D
+1
+8
D
+7 +6 +5
D
+4 +3 +2 +1
+8 to +3 before shift (n2=3)
D
[3] Copy
[2]
"n2" bits are
shifted rightward
(n2=3).
+2 to before shift (n2=3)
S
Before
execution
After
execution
S
S
S
D
D
D
D
D
D
D
D
D
D
D
D
D
D
S
D