firstname.lastname@example.org Posted May 29, 2020 Report Share Posted May 29, 2020 I'm having difficulty communicating with a Tripp-Lite UPS via serial RS-232. One variable I need to rule out is the USB to RS-232 adapter cables I'm using. I seem to remember there being some chip sets that didn't work well so I thought I'd ask the group. I've tried two different cables. The SABRENT Model CB-FTDI using the FTDI chipset and the UGreen using the Prolific PL2303 chipset. Does anyone have any experience with these cables? Any cables/chipsets you have used before without problems? I'm heading down this path because when I send a command that should ask the unit what the input voltage is I don't get any response at all from the UPS. In fact it doesn't matter what command I send, I get the same results. The config vi runs with no error, Open and write also run without errors, when I use bytes at port it returns 0, above I just ask for 1024 but the results are always the same, the read function times out with an empty read buffer. I think next week I'll go into the lab and try using the PXI-8430 and a straight through serial cable. I just really think this should be working... Does anyone see anything I'm missing? Thanks, Bob Quote Link to comment
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.