Campbell COM110A, Руководство пользователя

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Using with Campbell Scientific Dataloggers
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9.2 Setting up call-back in Loggernet
Where the logger is programmed to call-back to a Loggernet server, perhaps
because it has a dynamic IP address, Loggernet needs to configured to expect a
call-back on a the chosen port. The same settings apply whether using the loggers
own TCP/IP stack or the modem stack.
9.2.1 Setting up call-back in Loggernet Version 3
Version 3.x versions of Loggernet require an IPPort be entered for each logger and
a separate call-back socket be allocated to each IPPort. For each socket you will
need to open a hole in your firewall(s) and possibly put an entry in your router
tables, if using one.
In versions of Loggernet of 3.4 there is an extra setting in the setup screen called
“TCP Listen only”. This should be set when using dynamic, private IP addresses
to prevent Loggernet trying to call back out to the logger in some circumstances,
e.g. loss of a connection. This setting ensures Loggernet returns to a state of
waiting for another call-back as soon as possible. The setup screen for Loggernet
3.4 is shown below.
When filling in that setup screen, the settings for the Internet address and the
IPPort on the IPPort hardware screen are largely irrelevant in this case as
Loggernet cannot make new outgoing calls as most loggers with dynamic IPs
(assigned to the datalogger) do not allow incoming connections. You should still
add a valid IP address and match the port number to the Pakbus port number in the
datalogger to prevent Loggernet flagging errors. When a successful connection is
made from a remote logger you will see that Loggernet updates the IP address of
the remote logger, as viewed in the Setup screen. Unless your provider allows
this, do not expect to be able to make connections out to this address though as it
is normally the address of an intermediate router that is the barrier between the
private and public networks. If you have several systems with service from the
same airtime provider you will often find the same IP address shown for several of
different loggers