D09 Total Alarm

Definition

Set the flow meter’s alarm mode for totalizer values exceeding the set range. Default: Off. The alarm code belongs to Alarm – B. (D09 , D10 , and D11 work together to enable totalizer target alarm functionality.)

D09、D10、D11 Total Alarm Examples

Example 1: Forward Flow
Enable D09 Total Alarm.
Set D10 Total Trig. to “Greater than Target”.
Set D11 Total Target to a positive value, e.g., +100.
When the cumulative forward flow exceeds 100, 
the system triggers the total alarm.

Example 2: Reverse Flow
Enable D09 Total Alarm.
Set D10 Total Trig. to “Less than Target”.
Set D11 Total Target to a negative value, e.g., -500.
When the cumulative reverse flow drops below -500, 
the system triggers the total alarm.

Notes

DND (Do Not Disturb) Mode

• System detects abnormalities, but red backlight remains off.

• Example: Alarm-A “4 Off Pipe” triggers no backlight.

• Abnormalities still appear on the Abnormalities page.

• RS485 connection still sends alarm signals.

• OCT output continues to signal alarms if configured.

Operation Procedure

Button Functions (Click to Expand)

The main unit has four buttons. The bottom line (Line 3) of the LCD displays the current function of each button. Under normal operation, the button functions are as follows:

• Blue Button - Leftmost button: Return, exit, or save settings.

Gray Arrow Buttons:

• Left Gray Button: Previous Page, decrease value, or select item

• Right Gray Button: Next Page, increase value, or select item

• Orange Button: Rightmost button: Enter settings, edit, or confirm selection

Do not hold buttons for extended periods to avoid damage.

Button functions may change depending on the operation context to improve usability or prevent accidental presses.

Totalized Flow Alarm Function (Click to Expand)

This function triggers an alarm when the totalized flow reaches a value greater than or less than the preset target.

Related parameters: D09 Total Alarm, D10 Total Trigger Condition (Total Trig.), and D11 Total Target.

1

D09 Enable Totalizer Alarm

D09 Total Ala. Setting Steps：
• From the main screen (green backlight), 
  press Orange Button (Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select D. Alarm & Info , press Orange Button (Enter).
• Use Gray Arrow Buttons to select D09 Total Ala. , press Orange Button (Enter).
• Use Gray Arrow Buttons to choose the options. 
• Press Orange Button (Set) to confirm.
• Press Blue Button (ESC) to return to the main screen (green backlight).

2

D10 Set Total Trigger Condition

D10 Total Trig Setting Steps：
• From the main screen (green backlight), 
  press Orange Button (Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select D. Alarm & Info , press Orange Button (Enter).
• Use Gray Arrow Buttons to select D10 Total Trig , press Orange Button (Enter).
• Use Gray Arrow Buttons to choose the options. 
• Press Orange Button (Set) to confirm.
• Press Blue Button (ESC) to return to the main screen (green backlight).

3

D11 Set Total Target Value

D11 Total Target Setting Steps：
• From the main screen(green backlight), 
  press Orange Button(Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select D. Alarm & Info, press Orange Button(Enter).
• Use Gray Arrow Buttons to select D11 Total Target, press Orange Button(Enter).
• Use Gray Arrow Buttons to choose the digit to adjust(highlighted in dark gray).
• Press Orange Button(Edit) to enter adjustment mode.
• Adjust digits: Left Gray Button to increase, Right Gray Button to decrease.
• Press Orange Button(Set) to confirm each digit; repeat for other digits as needed.
• After all digits are set, press Blue Button(Save).
• Confirm by pressing Orange Button(Save) (or Blue Button(NOT) to cancel).
• Press Blue Button(ESC) to return to the main screen(green backlight).

4

Totalizer Alarm Operation

When the totalizer alarm is enabled and the accumulated flow meets the trigger condition, the system triggers Alarm B. The alarm bits (Bit6, Bit7) are set to 1, indicating that the alarm is active.

The alarm behavior follows the mode set in D09:

• ON: The receiving system receives the alarm signal, and the meter displays a red backlight alarm.

• Do Not Disturb (DND): The receiving system still receives the alarm signal, but the meter does not display a red backlight alarm.

D09 Options, RS485 Values, Read/Write Commands, and Formats

Option	Description	RS-485 Value
Off (Default)	-	0
On	-	1
Do Not Disturb	Do Not Disturb	2

Refer to the Read/Write Memory List for the Modbus command format. This parameter uses the Int16 data format.