Melsec Fx Series " Oneshot Timer"

WESELLNAWON

Member
Join Date
Oct 2002
Posts
4
I AM NEW TO USING MITSUBISHI MELSEC FX SERIES PLCS WITH HAND HELD FX20PE PROGRAMMING UNIT. DOES ANYONE KNOW HOW TO PROGRAM A ONESHOT TIMER CIRCUIT?
 
THANK YOU FOR YOUR HELP!
I AM STILL KIND OF LOST THOUGHT. IF I WANT TO MAKE A SEQUENCE LIKE:
INPUT LD X7 (MOMENTARY CONTACT)
OUT Y2 FOR 13 SEC THEN GO TO Y3 FOR 10 SECS, ETC IS YOUR SUGGESTION CORRECT?
DO I USE M CONTACT TO HOLD THE CIRCUIT ON FOR ONE SCAN
 
HI AGAIN!
I AM PLAYING WITH THE PROGRAM SUGGESTED ABOVE AND I FOUND I NEED ONE MORE BIT OF HELP.
HOW CAN I LOCK OUT LD X7 AFTER ACTIVATION SO THET THE PLC WILL FINISH THE ENTIRE PROGRAM WITHOUT BEING ABLE TO START SIMULTANEOUS SEQUENCES IF THE LDX7 IS ACTIVATED DURING THE CYCLE?
ALSO DOES ANY ONE KNOW HOW TO USE THE FUNCTION 65 ON A MELSEC FX 20 PE HAND HELD PROGRAMMER?
THANKS
 
There are many ways to lockout X7 to stop reactivation.
You have to look at your code and decide what is happening.

Clue: It does not matter if X7 is reactivated during the first timing phase but it does if it is during the second timing phase. Maybe something from the second phase can do this job?

Function 65 is a special timer STMR

It uses 4 consecutive internal relays and makes them into a TOF a TON and the last 2 are alternate flashing.

The instruction is written: {STMR T0 K10 M0}
M0 is a TOF, M1 is a TON & M2-M3 turn on and off alternatively as the timer T0 times out.
 

Similar Topics

Hello All, Last day we are facing some issued. After checking we found that no data transfer between Melsec communication module (AJ71UC24) and...
Replies
1
Views
1,604
Hi there, Has anyone any experience with the Melsec iQ-R Series PLC? Ive been tasked with setting up the RD81OPC96 OPC Server rack mounted module...
Replies
0
Views
2,455
Dear Experts!!!! I want to communicate my "XG-8000 Series Keyence Vision camera" with Mitsubishi Q06UDV PLC over RS232C non-protocol mode. My...
Replies
0
Views
2,526
Hi all I got a new 32 bit notebook with windows 7 and I'm unable to communicate to p.l.c via usb. I have the driver for my old laptop(windows XP)...
Replies
0
Views
4,745
Hi All, Today is my 3rd day of using PLC, so I please bare with me. One of my goals is to hook up a device (CC-Link interface) to the QJ61BT11N...
Replies
3
Views
6,436
Back
Top Bottom