Campbell Scientific LoggerNet Datalogger Support Software - Manual (Page 146)

Section 5. Real-Time Tools
A control port must first be configured for output in the datalogger
program before it can be toggled on or off. Consequently, if you
select a port and it doesn’t appear to change, your program may
not have the port configured for output (refer to your datalogger
operator’s manual). The CR500 and CR510 have two control
ports, but only one of the ports, control port 1, can be configured
for output. Therefore, control port 2 cannot be toggled on or off.
It is included on the display so that you can monitor its status.
Ports on the CR5000 and CR9000X cannot be controlled directly
with the Ports and Flags window. For these dataloggers, special
Flag settings tied to the ports must be set up in the datalogger
program to achieve the desired control.
You can customize the labels for the Ports and Flags display by clicking within
the label field and typing the desired text.
5.1.4 Datalogger Clock
If a connection to a datalogger is established, the datalogger’s clock is checked
continuously and displayed along with the computer’s clock as updates are
received. The clock update can be paused by selecting the check box next to
Pause Clock Update. In some situations it is desirable to pause the clock
update to minimize data traffic over the communications link.
You can set the clock by clicking the Set button. LoggerNet attempts to set the
datalogger clock as closely as possible to the computer clock. A slight
difference in the clocks might exist after the clock is set because of the
communications time delay. Over some communication links it is impossible
to match the computer clock exactly. LoggerNet uses advanced compensation
to get the best possible synchronization between the computer and the
datalogger clocks.
Double-clicking in the Station Date/Time field makes it an editable field and
allows you to manually edit the station's clock. The date/time should be
entered in the same form as it is displayed. When you press Enter on your
keyboard, the datalogger’s clock will be updated.
If you are not connected to the datalogger, or if you are connected but the clock
update is paused, you can press the Check button and LoggerNet will check
both the datalogger’s clock and the computer’s clock and display the results on
the screen.
An automatic scheduled clock check can be set up in the Setup Screen (see
Section 4.2.4.4.5, Clock Tab).
Setting the clock may affect the time stamps assigned to your data. Refer to
Section 4.2.6, Setting the Clock, for further discussion.
NOTE
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