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7 Applied Instructions (Program Flow)
7.7 FEND / Main Routine Program End
123
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
1
Outline
2
Instruction List
3
Configuration of
Instruction
4
How to Read
Explanation of
Instructions
5
Basic Instruction
6
Step Ladder
Instructions
7
Applied Instructions
(Program Flow)
8
Applied Instructions
(Move and
Compare)
9
Applied Instructions
(Arithmetic and
Logical Operation)
10
Applied Instructions
(Rotation and
Shift Operation)
7.7 FEND / Main Routine Program End
Outline
This instruction indicates the end of the main program.
1. Format and operation, execution form
2. Set data
3. Applicable devices
Function and operation explanation
When FEND instruction is executed, output processing, input processing and watchdog timer refresh are
executed, and then the program execution returns to the step 0.
FEND instruction is required in creating subroutine programs and interrupt programs.
1. In the case of CJ instruction
*1. The function FEND instruction is added automatically during compilation, and does not require to be
programmed.
Refer to "Cautions".
FX3U(C) FX3G(C) FX3S FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD ST
FEND 16 bits Continuous FEND(EN);
Variable Description Data type
Input
variable
EN Input condition Always TRUE
Output
variable
ENO Input status Bit
Operand
type
Bit Devices Word Devices Others
System User Digit Specification
System
User
Special
Unit
Index
Constant
Real
Number
Character
String
Pointer
XYMTCS
D.b
KnX KnY KnM KnS T C D R
U\G
VZModifier K H E
""
P
- No target device is available.
FEND
EN ENO
X010
Main routine program
Main routine program
Main routine program
0
P20
When X010 is OFF
Jump
When X010 is ON
CJ
EN ENO
p
FEND
EN ENO
P20
*1