FX5U Password

[manna]

dear All,

I faced a problem that is password problem.I give a password on my fx5u Plc Couple of month ago.but I can't memorize this password.Have any Option Reset Data?i cant communication with plc.every time ask remote bpassword.Please Give the solution

 

[Gambit]

You still have the program right. 
Than you can clear the PLC via 

Online - PLC Memory Operation - CLear PLC memory 
After this the PLC is again in factory settings 

[manna]

i didn't connect with plc.need remote password.if i can communication successfully with PLC then i can reset the password as per your Suggestion .But I can't connect with plc.pls give me solution

   

[Gambit]

It won't ask you for the password when you clear the PLC. If you don't have the original program on your PC than we cannot help you.

[manna]

it was blank program.only i put password for check purpose.but password forget.

 

[Gambit]

ok than just clear the CPU

[FIlipS]

On 11.03.2020 at 0:52 PM, Gambit said:

It won't ask you for the password when you clear the PLC. If you don't have the original program on your PC than we cannot help you.

I have FX5U and when I try to open CPU MEmory Information, it ask me for a password.

Is It another option to make factroy reset in this CPU.

[Gambit]

But it should not when you press initialization.

Updating the firmware might also clear your PLC program:
https://www.mitsubishielectric.co.jp/fa/download/software/detailsearch.do?mode=software&kisyu=/plcf&shiryoid=0000000051&lang=1&select=0&softid=1&infostatus=8_1_1&viewradio=1&viewstatus=&viewpos=

 

 

Edited September 9, 2020 by Gambit

[FIlipS]

When I try initialization it also ask for password.

I tried updating firmware, but the password is still set, also plc IP adres is the same.

[Gambit]

That is strange it shouldn't. Have you tried updating the firmware ?

 

[FIlipS]

Yes I tried updating firmware, but during this procedure PLC make BCK of program on SD card, and dowloand it after updating.

 

[FIlipS]

I found a solution. You must stop the procedure halfway

• Pun in SD card with new firware
• Turn on PLC
• Reset PLC 
• Wait until run and error stop blinking
• Turn off PLC nad put out the SD Card

After that PLC uptade the firmware but don't dowland the BCK program from SD card. 

[Cakmoes]

Hi Filips...

About your fx5u password problem, Did you get the solution out already? please let me know. thanks

[Riswan Ahamed]

Hii all,

If you have backup of the program, then you can follow the below steps to remove the password in Mitsubishi FX5U PLC

1. Open GX Works3

2. Change PLC to STOP mode

3. In the top navigation tabs, Click Online -> CPU Memory Operation... 

4. Then CPU Memory Operation Pop up will open

5. There you can find Initialization(F) button below, Click that

6. Another Pop up will open, Click YES in that

7. Now RESET your PLC, and then keep in RUN mode after few seconds

 

Your FX5U PLC will be ready as brand new PLC without any password and program in it. After that you can download whatever program you want

 

NOTE: Try this only if you have the program backup file with you

Edited June 23 by Riswan Ahamed