N
news.valornet.com
Hi,
I have a diagnostic tool that records information. It has some sort of a
proprietary interface port on it, just 2 conductors. I can tell one of them
is ground. The remote that normally hooks to this interface port has some
sort of two way communicatoin with the diagnostic tool. It can send
commands to the tool, but mostly the remote outputs to a serial device at a
very slow speed. I would prefer not to have to purchase the remote device
and make my own so that can get information from the diagnostic tool. I
wonder if the tool itself outputs in serial and I just need to hook up to
it.
Can the RX and TX pins in a serial interface be combined to a single pin
somehow? I really expected to find 3 conductors.
Is there any way of using a DMM to find out if the 2 conductors (one ground)
is a serial interface? The resistance between them is about 4.7k. I don't
see any voltage on them.
How could/would communication like this occur over 2 conductors that
involves slow serial (1200 baud)?
TIA!
I have a diagnostic tool that records information. It has some sort of a
proprietary interface port on it, just 2 conductors. I can tell one of them
is ground. The remote that normally hooks to this interface port has some
sort of two way communicatoin with the diagnostic tool. It can send
commands to the tool, but mostly the remote outputs to a serial device at a
very slow speed. I would prefer not to have to purchase the remote device
and make my own so that can get information from the diagnostic tool. I
wonder if the tool itself outputs in serial and I just need to hook up to
it.
Can the RX and TX pins in a serial interface be combined to a single pin
somehow? I really expected to find 3 conductors.
Is there any way of using a DMM to find out if the 2 conductors (one ground)
is a serial interface? The resistance between them is about 4.7k. I don't
see any voltage on them.
How could/would communication like this occur over 2 conductors that
involves slow serial (1200 baud)?
TIA!