Yes, but tieing the TX & RX pins together physically tests the whole TX & RX path - And the convertor, on the PC
side. Like Birt, I suspect your Prolific device. On 4/5/19, Thomas Morehouse <[email protected]> wrote: > John - isn't that the same as using half/full duplex? TeraTerm on Win10 > lets me "echo" sent characters; duplex on TELCOM lets me do the same on the > 102. > > Tom M. > > > On Fri, Apr 5, 2019 at 9:11 AM John Gardner <[email protected]> wrote: > >> You should be able to tie ("loop back") the TX pin of >> >> your convertor to the RX pin, so that sent characters >> >> are echoed to the display. Same deal on the MT side. >> >> >> >> On 4/5/19, John Gardner <[email protected]> wrote: >> > Been there, done that - I've had good luck with the FTDI-based >> > >> > convertors sold by Adafruit. Some good tutorials on that site too. >> > >> > https://www.adafruit.com/product/284 >> > >> > On 4/5/19, Jeffrey Birt <[email protected]> wrote: >> >> FWIW, I have had very bad luck with Prolific USB<->Serial converters. >> The >> >> have failed to work 90% of the time when I have tried them (on >> >> multiple >> >> platforms, applications, etc.) >> >> >> >> >> >> >> >> FDTI converters are much better, far, far fewer issues. >> >> >> >> >> >> >> >> I’m not saying for certain that the Prolific adapter is your issue but >> if >> >> it >> >> were me, I would suspect it. >> >> >> >> >> >> >> >> Jeff_Birt (Hey Birt!) >> >> >> >> >> >> >> >> >> >> >> >> From: M100 <[email protected]> On Behalf Of Thomas >> >> Morehouse >> >> Sent: Friday, April 5, 2019 7:15 AM >> >> To: [email protected] >> >> Subject: Re: [M100] TeraTerm - still not communicating >> >> >> >> >> >> >> >> John - sorry, but I'm a dolt. Unfortunately I have no idea what >> "looping >> >> back both sides" means. >> >> >> >> >> >> >> >> Hitting a brick wall! >> >> >> >> TM >> >> >> >> >> >> >> >> >> >> >> >> On Fri, Apr 5, 2019 at 8:08 AM John Gardner <[email protected] >> >> <mailto:[email protected]> > wrote: >> >> >> >> OK. sounds like you know what you're doing. >> >> >> >> Have you tried looping back both sides of the connection? >> >> >> >> On 4/5/19, John Gardner <[email protected] <mailto:[email protected]> > >> >> wrote: >> >>> On the Device Manager toolbar, click View & select "Show >> >>> >> >>> hidden devices". What do you see now? >> >>> >> >>> I'm not familiar with Prolific-based USB to Serial devices; >> >>> >> >>> do you have the requisite driver loaded? >> >>> >> >>> On 4/5/19, John Gardner <[email protected] <mailto:[email protected]> > >> >>> wrote: >> >>>> In W10, open the Control Panel, click on Device Manager, >> >>>> >> >>>> click Ports (COM & LPT) - COM1 is normally the default - Is >> >>>> >> >>>> that what you see? >> >>>> >> >>>> On 4/5/19, Thomas Morehouse <[email protected] >> >>>> <mailto:[email protected]> > wrote: >> >>>>> Gentlemen - >> >>>>> >> >>>>> I've got my 102 connected to my Win10 laptop. >> >>>>> >> >>>>> USB to serial cable, with null modem adapter. >> >>>>> >> >>>>> I've got Telcom STAT set to 57E1E. Then I choose TERM. >> >>>>> >> >>>>> I've got TeraTerm set to Com6/Prolific, with port set to 1200 bps, >> >>>>> 7E1, >> >>>>> xon/off. >> >>>>> >> >>>>> Still no comms either way. Characters typed on either device don't >> >>>>> appear >> >>>>> on the other device. >> >>>>> >> >>>>> I'm just guessing at how to use TeraTerm, as even in the help files >> >>>>> I >> >>>>> find >> >>>>> no "step by step" to connecting. In other words, what to do when. >> >>>>> >> >>>>> Advice from a TeraTerm user needed! >> >>>>> Thanks. >> >>>>> Tom M. >> >>>>> >> >>>> >> >>> >> >> >> >> >> > >> >
