Basler Electric BE1-11m - Manual (Page 283)

9424200996 Rev L 271
Timekeeping
The BE1-11m provides a real-time clock with capacitor backup that is capable of operating the clock for
up to 24 hours after power is removed from the BE1-11m. As the capacitor nears depletion, an internal
backup battery takes over and maintains timekeeping. The backup battery is standard and will maintain
the clock for more than five years depending on conditions.
The clock is used by the demand reporting function, the fault reporting function, the oscillography
recording function, and the sequence of events recorder function to time-stamp events. The clock function
records the year in two-digit format.
Clock Setup
BESTCOMSPlus Navigation Path: Settings Explorer, General Settings, Clock Setup
HMI Navigation Path: Settings Explorer, General Settings, Clock Setup
Clock settings are made through the communication ports using BESTCOMSPlus
® or through the front-
panel interface. Write access to ports is required to program the clock. An alarm point is provided in the
programmable alarms to detect when the BE1-11m has powered up and the clock has not been set.
The clock settings are made through BESTCOMSPlus by selecting Clock Setup under General Settings.
The BESTCOMSPlus Clock Setup screen is illustrated in Figure 230. Settings are listed in Table 90.
The local time zone is configured on this screen. The Time Zone Offset is the local offset to UTC
(Coordinated Universal Time). The Time Zone Offset is required if NTP or IRIG-B is used for time
synchronization or when the Start/End Time Reference is set to UTC (Coordinated Universal Time). The
Start/End Time Reference is set to UTC time if required by local daylight savings time rules. The
Start/End Hour/Minute settings determine the time when the DST will go into effect. The Bias setting is
the amount of time that the clock moves forward or backward. The default settings are configured for the
Central Time Zone in the United States as shown in Figure 230. Using these settings, the clock would
move forward 1 hour at 2:00 a.m. on the second Sunday in March and move backward 1 hour at 2:00
a.m. on the first Sunday in November. DST can also be configured for a specific day of the month by
selecting Fixed Dates under DST Configuration.
Time Priority Setup
There are four available protocols (RTC, NTP, IRIG-B, and DNP), which can be assigned priorities to
update the date and time. Double-click on an available item to move it to the Enabled box. Use the arrow
buttons to set the priority of the selected item.
The NTP (Network Time Protocol) synchronizes the real-time clock to a network time server when an
Ethernet cable is connected. The address of the NTP server must be entered when NTP is selected in the
Time Priority Setup, Enabled box.
IRIG Decoding
The IRIG Decoding signal defines whether or not to decode the year field in the IRIG signal. Refer to the
manufacturer of your equipment to determine if the year field is being sent to the BE1-11m.
BE1-11m Timekeeping