Many apologies are in order
1) There's nothing like reading the manual. The COM2 wierdness is explained
there - the
DCD behaviour seems to be the inactive RS485 lines. I had forgotten about that.
2) Sorry about being lazy by replying instead of creating a new thread. I
didn't anticipate
that behaviour.
Martin
--- In "Yan Seiner" <> wrote:
>
> --- In "naturalwatt" <martin@> wrote:
> >
> > I have just found something really strange. I have three TS7250
> here and they are all the
> > same.
> >
> > On Com2, the TS7250 is deasserting pin1, DCD. This should be an
> input to the TS7250, not
> > an output.
> >
> > Correct behaviour as seen on COM1 is to deassert pin4 DTR, pin7 RTS
> and assert Pin 3 TD.
> >
> > COM2 seems to assert DCD instead of DTR.
> >
> > Any comments from the crowd?
>
> I thought only COM1 had the "normal" pins. COM2+ only provides RX,
> TX, and GND. No? Still, if that's the case, pins other than 2,3,5
> shouldn't be connected.
>
> Aside: Please start new threads rather than replying and changing
> subject. It screws up the threading.
>
> --Yan
>
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