My concern about using PLC

[yosepht]

  I have spent the last 10 months+ making a working model of an idea
I had. Thanks to T100 PLC the idea is now a reality.

   If I plan a production model around a PLC, I am surely leaving it
open for anyone to copy and duplicate.  Are there controllers
available that can be programmed once and will not allow the user
access to the software on board?
    Your PLCs have enough info on them for anyone to get on the
internet and download the software and start talking to them.
I am interested in some proprietary control.

    Thanks in advance
         Yoseph

[support]

First of all, the T100MD+ verion 5.x software does not allow you to upload program from the PLC so you are safe.

DOS TRiLOGI version 4 has the ability to upload the ladder program but not the custom function from the PLC.  However, you can use put in a program upload/download transfer password using TL41.exe which can prevent unauthorized attempt to upload the ladder logic and it also restrict transfer of new program to the PLC without the password.  This capability was not brought to Version 5.x to avoid confusing user with the TLServer username/password system.

TRiLOGI available for free download from our website are educational version and do not have ability to communicate with the PLC so that should not be not of concern to you.