Hi colleagues, I have a Huvitz autoblocker CAB 4000 and I can't connect with the software to order lenses. The first null modem cable comes out of edger 1 and goes to the wheel, the other RS 232 cable goes to the network signal converter and then to the router. Transmission occurs correctly, but no frame shape appears. I tried various protocol type and destination settings, but I still can't see the shape. What can be the cause? Thank you.