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[?]: How to upload Program to backup protected TWIDO PLC?
Posted: Fri Aug 28, 2009 12:19 pm
by nikkon
I have a TWIDO PLC TWDLMDA20DRT,
I want to upload program to backup,
but the PLC is protected in unupload mode.
Please help me how to backup, many thanks
Re: [?]: How to upload Program to backup protected TWIDO PLC
Posted: Thu Nov 04, 2010 12:53 am
by Ilya
up
Re: [?]: How to upload Program to backup protected TWIDO PLC
Posted: Wed Feb 04, 2015 7:38 pm
by abbasmech
I also face same problem
Is there any solution.
Re: [?]: How to upload Program to backup protected TWIDO PLC
Posted: Tue Mar 15, 2016 2:06 pm
by MifPT
Guys:
There is no way to recover the program - I'm sorry.
I've worked with Twidos for a long time and (like Nanos) once you protect the code it stays protected.
If you return the Twido to =SCH= , for a charge, they can erase the memory, but you won't be able to recover the program.
The reason being has to do with the OEM.
If someone was able to unprotected a code on a small PLC, that PLC maker will never be used in an OEM.
They spend ages developing and perfecting a PLC code and are not too keen to see it copied.
With the memory from the PLC, you can get the raw machine code, but you won't get any more than that.
Sorry,
MifPT