Posted 5 Mar 2020 Greetings I have an HMI in the form of an industrial PC, is ok to use an SC09 programming cable (8 pin DIN mini to USB type) as a permanent means of communicating between the FX3U PLC and industrial PC's USB port? I am avoiding going through the trouble of buying a DB9 connector type for the PC end due to budget limitation. My CPU also doesn't have an ethernet card, i don't want to buy one either. i have already tested the connection and it works, i just want to understand the drawbacks of communicating via USB instead of ethernet or traditional serial. Share this post Link to post Share on other sites