Changing Xfcg4 Clock - ABB XSeriesG4 User Manual

Locate the reset button on the upper left-hand side of the board (Figure 84).
Press the reset button for approximately 5 seconds. The flow computer will cold boot.
6.4.2 Software Cold Boot
6.4.2.1 Method 1: Cold boot from the loader
Connect the PC running PCCU32 to the flow computer with either an MMI cable (RS-232), a USB cable or an
Ethernet cable
Open PCCU. The user needs to ensure that they are not in Entry Mode and are at the Totalflow splash screen.
Click the 32-Bit Loader icon on the toolbar.
Select the Reload button.
Select the appropriate connection type from the available drop-down menu, in the lower left hand portion of the
screen.
Ensure that all the checkmarks are removed from the software options.
Place a checkmark by Shutdown Flash, Delete tfData and Start Flash. A prompt will display that warns that a cold
boot is occurring.
Click Yes to initiate the cold boot.
IMPORTANT NOTE: There is a chance that the user will see a PCCU32 dialog box display that informs them
that the Target Device Loader is not working. The user will need to follow the dialog box instructions to warm
boot the system.
6.4.2.2 Method 2: Cold boot from the terminal screen
Connect the PC running PCCU32 to the flow computer with either an MMI cable (RS-232), a USB cable or an
Ethernet cable
Select Entry mode within PCCU.
Click the Terminal icon on the PCCU toolbar.
Move the cursor to the terminal prompt (->).
Type in the following: BOOT=COLD.
Press Enter on the keyboard to initiate the cold boot.

6.5 Changing XFCG4 Clock

Changing the flow computer clock when measurement applications are instantiated, could affect the time stamps of log period
entries. To protect integrity of accounting audit trails, the flow computer handles clock changes as follows:
6.5.1 Clock change not crossing an hour boundary
When next log period entry is made, clock is not altered.
Example: If present time is 4:15 p.m. and clock is changed to 4:05 p.m. of the same day, the daily flow record is the same.
Entry reflects averages accumulated over a 70 minute time period (15 minutes plus 55 minutes).
6.5.2 Forward clock change crossing an hourly boundary
Forces a log period entry for part of hour that has accumulated since last hourly entry. XFC
data flow record boundary and begins maintaining balance of days' data in newly defined boundary.
Example: If present time is 4:55 p.m. and clock is changed to 5:05 p.m. of the same day, the entry reflects only a 55 minute
average accumulation. Then a new flow record is written and this period is also based on a 55 minute accumulation.
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G4
then advances to newly defined
XFC G4 2103335 Rev AB