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10 Applied Instructions (Rotation and Shift Operation)
10.10 SFRD / Shift Read [FIFO Control]
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FXCPU Structured Programming Manual
[Basic & Applied Instruction]
10.10 SFRD / Shift Read [FIFO Control]
Outline
This instruction reads data for first-in first-out control.
1. Format and operation, execution form
2. Set data
3. Applicable devices
S: Refer to "Cautions".
FX
3U(C)
FX
3G(C)
FX
3S
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD
ST
SFRD
16 bits
Continuous
SFRD(EN,s,n,d);
SFRDP
16 bits
Pulse
SFRDP(EN,s,n,d);
Variable
Description
Data type
Input
variable
variable
EN
Execution condition
Bit
Head word device storing data
ANY16
Number of store points (for pointer, value is added by "+1".)
2
2
≤ n ≤ 512
ANY16
Output
variable
variable
ENO
Execution state
Bit
Word device storing data taken out first
ANY16
Operand
type
Bit Devices
Word Devices
Others
System User
Digit Specification
System
User
Special
Unit
Index
Constant
Real
Number
Character
String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D R U
\G
V Z Modifier K
H
E
"
"
P
z
z
z z z z
S1
S2
z
z
z
z
z
z z z z
S1
S2
z z
z
SFRD
EN
s
n
s
n
ENO
d
SFRDP
EN
s
n
s
n
ENO
d