Campbell Scientific LoggerNet-SDK Software Development Kit - Manual (Page 106)

Section 17. CsiDatalogger Control Reference
COM Return Values
Table of Possible Values
Code Meaning
S_OK Success: Normal return
Datalogger.loggerConnectStart()
Name
Datalogger.loggerConnectStart(logger_priority_type
priority)
Parameters
The following values indicate the priority of maintaining the connection when
other devices might need the resources:
Table of 'priority' values:
priority_high = 0
priority_normal = 1
priority_low = 2
Description
This method will open a persistent connection to the specified datalogger.
Keeping the connection open will allow the LoggerNet server to handle
multiple transactions without disconnecting. The default behavior of the server
is to disconnect from the datalogger after finishing each task, such as a
clockCheckStart. Keeping the connection open is very helpful if it takes a
considerable amount of time for the server to connect to a datalogger, such as
on a dialup connection.
This method should only be called when the value of serverConnected, is true.
If not, this method will return
E_CSI_NOT_CONNECTED . This method triggers
onLoggerConnectStarted, or onLoggerConnectFailure, depending on its
success or failure.
COM Return Values
Table of Possible Values
Code Meaning
S_OK Success: Normal return
E_CSI_BUSY Error: A persistent communications link has
already been started with this datalogger
E_CSI_FAIL Error: Unexpected error
E_CSI_NOT_CONNECTED Error: Not connected to the LoggerNet server
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