Thanks, that's what we were thinking we should do but wanted to confirm it.
Ken
--- In "PeterElliot" <> wrote:
>
> Hi Ken,
>
> The 7200 doesn't use an isolated RS485 port, therefore the signals are
> referenced to the system 0V. An isolated RS485 port would need a 0V
> reference, which could be connected to the 7200 0V.
>
> Regards,
>
> PJE
>
> --- In "kenbiss" <kenbiss@> wrote:
> >
> > I have been using the 7200 for a while now connecting to various 485 modbus
> > devices and have had no problem just using the +tx/rx (pin 1) and -tx/rx
> > (pin 6). I am now looking at other 485 devices that refer to a 485 signal
> > common in addition to the +tx/rx and -tx/rx. I've noticed on the COM2
> > Serial Port Pin Configuration of Connectors that there is no "common" pin
> > labeled, only the +tx/rx (pin 1) and -tx/rx (pin 6), this particular
> > manufacturer is adamant that we have to use the common pin to make the
> > communications work, I am confused because the ts7200 does not provide a
> > common, only a +,-, and ground.
> >
> > Thanks
> > Ken
> >
>
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