Crouzet Millenium II+ program

Hello everyone, I am trying to revive an old crouzet millenium II+ plc for an educational institution. I have managed to put together a connection cable using a USB-TTL converter (CP2102), but I have the problem that the current software from the Crouzet company does not recognize the COM port (Windows does) and also this program does not contain the plc with what I am working on (reference 88950051).
Any idea where I can get the software for this version of plc? Or what could be the reason that the current software does not recognize the com port?
 
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