[How download a program for one PLC with Unilogic??]

Hello, I'm new programming unitronics PLC's, and I've been trying download a program to my PLC, but when I try download It, the software don't find my PLC.

How can I download It by USB?? Help me please, I need to download it for this week.

[Download application via USB]

Hello, 

I'm working now with this type of PLC, and I can't download my program to the PLC by USB, can you help me with this i don't have a lot of information about this PLC, if you can tell me something more about how can I Download my programs for them I'll be glad. Thank you.