Campbell-scientific LoggerNet Datalogger Support Software Manual de usuario descargar pdf (Pagina 96)

Section 4. Setting up Datalogger Networks

PakBus Graph can be used to visually monitor and retrieve settings from

devices in a PakBus network.

Refer to Campbell Scientific’s PakBus Networking Guide for more

information about setting up PakBus networks.

Hardware Tab, Standard

Communications Enabled – Before communication can take place, all

devices in the chain must be enabled. When this box is selected, the PakBus

port is enabled for communication.

PakBus Port Always Open – The computer running the LoggerNet server is

included as a PakBus device in the network. Because of the nature of

broadcast messages within the Pakbus network, the computer can keep the

PakBus port open, and therefore, can “listen” for transmissions from other

PakBus devices. In most instances, keeping this port open is not an issue.

However, if there are other hardware or software components on your

computer that must have access to the physical port to which the PakBus port is

attached, you will want to clear the PakBusPort Always Open box so that

LoggerNet opens the port only when communication is initiated as part of

scheduled data collection or manually by the user. This way, the port remains

available for other uses, except when it is in use by LoggerNet.

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).

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Campbell-scientific LoggerNet Datalogger Support Software Manual de usuario Pagina 96