Password locked mitsubishi plc

[Pauldg75]

Is there any way of deleting a password protected mitsubishi fxo plc using melsec medoc?

It was password protected by an ex-employee, I'm not too bothered about the program, just need the plc for another project.

 

[John Morris]

Hello and Welcome to the forum.

found this with a google search.


http://www.plcs.net/downloads/index...name=MEDOC_DOS.pdf&directory=Other_PLC_Brands

Hope it helps

 

[Pauldg75]

Thanks John, but can't see anything in there that would do it.

 

[Steve Bailey]

I'll admit to not knowing much about that model. Can you remove the battery and let it sit unpowered overnight? That should clear the RAM, although the program could be stored in flash memory.
Can you start a new project and download a blank program or do you need to enter the password for the existing program to get that far?

 

[Pauldg75]

I'll give that a try thanks,
I've tried putting a blank program into it but it still wants the password.

 

[gclshortt]

http://www.plctalk.net/qanda/showthread.php?t=3221

http://www.plctalk.net/qanda/archive/index.php/t-5517.html

The above are old threads that may help.

Regards,

 

[Ronnie Sullivan]

You can use clear plc. The program and password will be gone.