Campbell Scientific LoggerNet Datalogger Support Software User Manual

Page 93

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Section 4. Setting up Datalogger Networks

Maximum Time On-Line – This field is used to define a time limit for

maintaining a connection to the device. (This may be useful in avoiding costly

communication costs, in the event that a connection to a station is inadvertently

maintained for a long period of time.) Maximum Time On-Line applies to both

scheduled connections and manual connections. However, for manual

connections from the Connect Screen, it is always best to manually disconnect

rather than relying on LoggerNet to disconnect for you.

When the device is contacted on a schedule, communication with the device

will be terminated once this time limit is exceeded. A value of 0 in this field

indicates that there is no time limit on maintaining a connection to the device.

When the device is connected in the Connect Screen and the time limit

approaches, a dialog box is displayed warning the user that Max Time On-Line

is about to be exceeded. The dialog box has

Reset Max Time and Don’t Reset

buttons. If the

Reset Max Time button is pressed, the Max Time On-Line

counter will be reset. If the

Don’t Reset button is pressed or if no button is

pressed, the connection will be terminated when Max Time On-Line is

reached.

The format for this field is 00 h(ours) 00 m(inutes) 00 s(econds).

If you are using LoggerNet Admin or LoggerNet Remote 4.0 and

using the Connect Screen to connect to a remote server that is

running an older version of LoggerNet, the behavior will be

different than described above. When connecting to a LoggerNet

3.4.1 server, you will be disconnected with no advanced warning

when Max Time On-Line is reached. A message will be displayed

indicating that Max Time On-Line has been reached. When

connecting to servers older than LoggerNet 3.4.1, the behavior

will be variable. Generally, you will be disconnected at some

point, but the timing of the disconnect will not be predictable.

Network Address – Enter the network address that is set up in the RF400

radio. A unique network address is required only if there is more than one

network of dataloggers within the communication range of the network you are

configuring; otherwise, the default of 0 can be used. All devices in a network

must have the same radio network address. Valid Radio Net Addresses are 0

through 63.

Radio Address – This is the unique radio address for the RF400 remote. Valid

addresses are 0 through 65,535.

Advanced
Maximum Packet Size – Data is transferred in “chunks” called packets. For

most devices the default value is 2048 byes. The value entered in this field can

be changed in 32 byte increments. If a communications link is marginal,

reducing the packet size may improve reliability.

NOTE

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