4.10.1 Sntp (Simple Network Time Protocol)
This feature enables synchronization of the CXC device time with an external source; i.e., the user’s network.
SNTP is an adaptation or basic subset of NTP which is used for more comprehensive device time synchronization
(see www.NTP.org).
CAUTION
The CXC SNTP client will only accept responses from the external server with the ‘stratum’
parameter set in the range of 1 through 14.
With the web interface, select the Controller page and then the Date & Time window:
Toggle the check box to
Enable SNTP Service
Enter target network
address for SNTP source
Figure 21–Date & Time window (Controller page)
To verify the Date/Time properties of the PC, select Start, Settings then Control Panel (Windows® 2000 operating
system). Select Date/Time and verify properties with the target network:
Select the tab for Time Zone
Use the pull-down menu to select the
correct time zone; e.g. Pacific Time
In this example, the Time Zone
Adjustment for the CXC is –8:00
Use the “-“ button in addition to the
pull-down menu to change the Time
Zone Adjustment,
then select Get Time Now to
Figure 22–Example of time zone adjustment
synchronize
Select Get Time Now to synchronize.
NOTE: SNTP service will automatically re-synchronize twenty-four hours from the time of the last synchronization.
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5
5.1
Menu Navigation and Sample Programming
Menu Navigation
The sample screen shown below (Figure 23) is presented upon login, see 4.7.1. From here, the user may
navigate (e.g. browse – as on a personal computer) each of the CXC’s menu items, including alarms, controls
and configuration items.
Mode (+Temp Comp) display
FL + TC
54.00V
250A
Battery Volts and
Load Current display
The folders can be expanded
(indicated by the plus sign shown here)
if there are files inside.
Tap on the folder icon or label to expand.
Folders that can be collapsed will be shown
with a minus sign.
Sliders and scroll bars
Buttons display here for additional
functions, such as programming, logout or
are used for navigation
to save changes
Figure 23–Menu navigation sample screen
The “Option” button is used to logout or save changes.
The menu structure is shown in Figure 25. The next chapter describes the items that may be changed.
5.1.1
5.1.2
5.1.3
5.1.4
Option to Logout
Via the Option button, a pop-up window enables the user to logout of the menu navigation screen and return to
the home page.
If changes have been made, another pop-up window will prompt the user with buttons to “Save” or “Discard.” In
each case, the active area will return to the home page and a pop-up window will confirm the selection. Tapping
the “X” button will clear the pop-up from the active area.
If changes have been made, and logout is selected, another pop-up window will prompt the user with buttons to
“Save” or “Discard.”
Option to Save
Saving in menu navigation (Supervisor only) will result in a prompt (pop-up window) to appear; e.g., “Save
Complete” when the settings are downloaded.
If there are no changes made, then saving in menu navigation will result in a prompt (pop-up window) to appear;
e.g., “There are no changes to save.”
In each case, tapping the “X” button will clear the pop-up from the active area and remain in menu navigation. The
Supervisor will retain the security access level to continue making changes and does not return to the home page.
Auto-Logout Timeout
After 20 minutes of inactivity (no user input), the CXC will automatically logoff the user. The CXC will discard any
unsaved changes made by the user while logged in the system and return to Normal Operation mode. The
access level will be reset to the default user access and the screen will continue to display live data.
Backlight Timeout
After one minute of inactivity (no user input), the CXC will automatically turn off the LCD backlight.
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5.1.5