Campbell NL200, Руководство пользователя

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NL200/201 Network Link Interface
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viable in the network. The beacon interval determines how often a beacon will be
sent out. Set the beacon interval to 0 to disable beacons.
Verify Interval – This interval, in seconds, determines the rate at which the
NL200/201 will attempt to start a hello transaction with a neighbour if no other
communication has taken place within the interval. If Verify Interval is set to 0,
the verify interval becomes 2.5 times the Beacon Interval. If both the Beacon
Interval and Verify Interval are set to 0, the verify interval becomes 300 seconds.
PakBus Neighbours Allowed –
You can set a list of “acceptable neighbours”
which the NL200/201 expects to hear from within set intervals (the Verify
Interval ). If the NL200/201 does not hear from neighbours in this list within the
Verify Interval, it will attempt to contact them on its own. It will ignore all
devices it hears that are not on the PakBus Neighbours Allowed list except if the
PakBus address is

4000. Hellos from devices with PakBus address

4000 are
automatically accepted as neighbours.
7.1.1 Physical Setup
Using the supplied serial cable, connect the NL200/201’s CS I/O port or RS-232
port to the datalogger’s CS I/O or RS-232 port, respectively. The NL201 will be
powered if connected via CS I/O. Alternatively, power the NL200 or NL201
through the barrel-connector jack located on the edge of the device. Connect the
NL200/201 to your network using an Ethernet cable, attaching one end of the
cable to the NL200/201’s Ethernet port and the other end to your network. Ensure
that the device is powered up by inspecting the Power LED.
7.1.2 Configuring the NL200/201
RS-232 PakBus Router

Connect to the NL200/201 in DevConfig (see Section 6, Configuring the
NL200/201 ).

On the NL200 tab:
o
Set Bridge Mode to “disable”.

On the RS-232 tab:
o
Set Configuration to “PakBus”.
o
Set Baud Rate to baud rate of attached device.
o
Set Beacon Interval, Verify Interval, and PakBus Neighbours Allowed as
described above. Often the default values can be used. However, an
allowed neighbours list can be useful in restricting communication paths.

On the Network Services tab:
o
Make note of the PakBus\TCP Server Port. (The default PakBus/TCP
Server Port is 6785. Unless firewall issues exist, it is not necessary to
change the port from its default value.)