7 Applied Instructions
7.21 Data Operation 3
674
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
7.21.3 POP
Outline
This instruction reads the last data written by the shift write (SFWR) instruction for the first-in first-out and first-
in last-out control
1. Format and operation, execution form
2. Set data
3. Applicable devices
FX3U(C) FX3G FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder ST
POP 16 bits Continuous POP(EN,s,n,d);
POPP 16 bits Pulse POPP(EN,s,n,d);
Variable Description Data type
Input
variable
EN Execution condition Bit
Head device storing first-in data (including pointer data) ANY16
Number of pieces of data stored
(Add "1" because pointer data is also included.)
ANY16
Output
variable
ENO Execution state Bit
Device storing last-out data ANY16
Operand
type
Bit Devices Word Devices Others
System user Digit specification
System
user
Special
unit
Index
Cons
tant
Real
Number
Character
String
Pointer
XYMTCS
D
.b
KnX KnY KnM KnS T C D R
U\G
V Z Modifier K H E
"
"
P
zzzzzzz z z
zzzzzzz z zz z
zz
POP
EN
s
ENO
d
n
POPP
EN
s
ENO
d
n
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