Micromod Micro-PWC: 53PW6000 MicroPWC Installation and Setup Manual - Manual (Page 57)

Micro-PWC
™ Installation & Setup Guide
Start-up and Operation 47
4.6 Network Time, Time Zones, and Time Adjustment
All timestamps in the Micro-DCI system are stored in Greenwich Mean Time (GMT), and then converted to
the local time for display to the user. Conversion from GMT to local time on a particular computer is con-
trolled by the computer's time zone setting and Daylight Saving Time setting.
4.6.1 Verifying Consistent Network GMT
The following procedure can be used to verify that all Micro-DCI nodes have the same GMT value, and the
same time zone and Daylight Saving Time settings:
1. On all nodes, compare the current time displayed in the Micro-PWC System Window. It should
be the same on all nodes.
2. From the Micro-PWC System Window, select Menu > Configure > Message Configuration.
3. Enter a test message and click on the Send button.
4. The message and its time stamp will be displayed on the bottom line of the Process Alarm
Window. (If the message and timestamp do not appear, check your filtering configuration.)
5. Compare the time stamp in the Process Alarm Window on all nodes; it should be the same.
If the comparison performed in Step 1 or Step 5 fails, then either the GMT is not consistent across all
nodes, or the time zone and Daylight Saving Time settings are not consistent, or both.
4.6.2 Time Settings
4.6.2.1 Changing the Time Zone Setting
You can change the time zone, time, and, if necessary, date, for the Micro-PWC system as follows:
1. From the System Window, select Start > Settings > Control Panel > Date/Time.
2. In the Date/Time window, click on the Time Zone tab.
3. Click on the drop-down arrow for the Time Zone box to select the correct time zone.
4. After changing the time zone, click on the Date & Time tab and use the text entry box to enter
the correct value for the local time.
✎ NOTE Many Micro-DCI operations are performed on a network-wide
basis. It is very important that all nodes on the network have the
same notion of the current GMT.
THE FACT THAT ALL NODES ON THE NETWORK DISPLAY THE
SAME TIME DOES NOT MEAN THAT THEIR GMT TIME VALUES
ARE IDENTICAL!
Different time zone and Daylight Saving Time settings could be
masking different GMT values.
✎ NOTE When you select a different time zone, Windows does not recompute the
local time value. You MUST adjust the local time to the correct value after
changing the time zone and before clicking Ok in this window. If you change
only the time zone and click Ok, the GMT will be changed to match the date
and time currently displayed in the Date/Time window. (It is typically only
necessary to change the hour, although the date may need to be changed,
too, depending on the time of day at which you are making the change.)