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7 Applied Instructions (Program Flow)
7.2 CALL / Call Subroutine
111
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)
7.2 CALL / Call Subroutine
Outline
This instruction calls and executes a program which should be processed commonly in a sequence program.
This instruction saves the number of program steps, and achieves efficient program design.
For creating a subroutine program, FEND and SRET instructions are required.
A similar processing is available by creating a function block and read it out from the program block.
Refer to the following manual for creating function blocks.
→ GX Works2 Version 1 Operating Manual (Structured Project)
→ Q/L/F Structured Programming Manual (Fundamentals)
1. Format and operation, execution form
2. Set data
3. Applicable devices
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
CALL
16 bits
Continuous
Use a subroutine program by reading out the
function block made of other program parts.
CALLP Pulse
Variable Description Data type
Input
variable
EN Execution condition Bit
Pointer number or ladder block label of subroutine program to be executed. ANY16
Output
variable
ENO Execution state 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
zz
CALL
EN ENO
p
CALLP
EN ENO
p
p
p