On Sat, 12 Jan 2008 23:43:09 +0000 (GMT), "Dave Liquorice"
wrote:


I think Phil was asking what the logger uses to talk TCP/IP over. ie is it
a wireless device requiring a wireless network or does it just have a bog
standard ethernet port. I get the feeling it's the latter.

OK, to be 100% clear: The connection on the 6555 logger is a standard
cabled RJ45 Ethernet socket, ie requiring a cable to connect to some
other network access device like a hub/switch or directly to the
modem/router that provides Internet access for the local network.

The simplest configuration would be for the 6555 to be connected
directly to an Internet modem/router (indeed the simplest
configuration would be just the 6555 and a basic modem/router -
provided it can provide a DHCP service).

But the 6555 can optionally be connected to a hub/switch on a larger
LAN (which is actually the test configuration I currently have
running). And I can't see any reason - though haven't actually tested
this yet - why the 6555 can't be connected to the WiFi equivalent of a
hub/switch (is that a wireless access point - I get a bit confused
with the terminology of WiFi LANs, they seem perversely different from
cabled LANs to no great advantage though I dare say there are
technical niceties as to why something doing an apparently similar job
should be called something different) and thence have the weather data
relayed over a WiFi leg of a local LAN to the LAN's Internet access
point.

I can add a bit more to yesterday's report. I now have the 6555 logger
streaming data to a local copy of Weatherlink v5.8 (don't look for it
just yet, v5.8 is not quite available for public download right now,
v5.7.1 is the latest downloadable version) in Bulletin mode, at the
same time as streaming data up to the Davis website. So the capability
is there - should a user wish to do so - to use Weatherlink locally in
the time-honoured fashion at the same time as streaming data up to the
Davis website. This might typically be useful for someone to make
their weather data publicly available 24/7 via the Davis website
without needing to run their own PC continuously tp provide uploads to
their own website. The only device other than the VP/VP2 station and
6555 logger running continuously would need to be the Internet
modem/router, which is usually the case anyway. But as and when you
were ready to switch on your local PC you could still access all the
logger data (either directly ie straight from the logger itself or as
a download from the Davis website).

John Dann
www.weatherstations.co.uk