Mitsubishi FX3G Series Programming Manual

801
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
36 Interrupt Function and Pulse Catch Function
36.3 Input Interrupt (Interrupt Triggered by External Signal) [Without Delay Function]
31
FNC276-FNC279 Data Transfer 3
32
FNC280-FNC289 High-Speed Processing 2
33
FNC290-FNC299 Extension File Register
34
FNC300-FNC305 FX
3U
-CF-ADP
35
SFC•STL Programming
36
Interrupt Function
37
Special Device
38
Error Code
A
Version Up Information
B
Execution Times
4) When catching a short pulse
In the program example shown below, the ON status is held for a certain period of time after a short pulse turns
ON.
Pulse input
X003
M0
ON ON
TO TO
Step
0
I301
Interrupt
pointer
When the rising edge of X003 is detected
M8000
RUN monitor
M0
M0
T0
K10
FNC 04
EI
T0
FNC 06
FEND
FNC 03
IRET
END
SET M0
RST M0
Interrupts are enabled by EI instruction.
The ON/OFF signal in M0 is utilized in this
program.
The period of time to hold M0 is specified.
After the timer time, M0 is reset.
The main program is finished by FEND
instruction.
When X003 turns ON and the interrupt routine is
executed, M0 is set to ON unconditionally.

Mitsubishi FX3G Series Specifications

General

Model	FX3G Series
Power Supply	AC 100-240V or DC 24V
Program Capacity	32, 000 steps
Execution Speed	0.21 µs/basic instruction
Communication Options	RS-422, USB, Ethernet
Expansion Modules	Analog, digital, communication
Programming Language	Ladder Logic, Instruction List
Built-in Functions	High-speed counters, pulse output
Analog I/O	Available via expansion modules