# D08 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. (D08 , D9 , and D10 work together to enable totalizer target alarm functionality.)
D08, D09, D10 Total Alarm Examples
```
Example 1: Forward Flow
Enable D08 Total Alarm.
Set D09 Total Trig. to “Greater Than”.
Set D10 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 D08 Total Alarm.
Set D09 Total Trig. to “Less Than”.
Set D10 Total Target to a negative value, e.g., -500.
When the cumulative reverse flow drops below -500,
the system triggers the total alarm.
```
### Notes
{% hint style="info" %}
### DND Mode
When **Do Not Disturb (DND) mode** is enabled:
* The flow meter detects abnormal conditions but the red backlight will not turn on.\
\&#xNAN;*Example:* Alarm-A “Paddle wheel abnormality” will not trigger the backlight in DND mode.
* Abnormal conditions are still displayed on the **Status/Alarm page**.
* If connected via RS485, the monitoring system still receives the alarm signal.
* OCT alarm outputs continue to operate if configured.
{% endhint %}
### 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 Direction Buttons:
* 
**Left Gray:** Previous Page, decrease value, or select item
* 
**Right Gray:** Next Page, increase value, or select item
* 
**Orange Button:** Rightmost button: Enter settings, edit, or confirm selection
{% hint style="danger" %}
**Do not hold buttons for extended periods to avoid damage.**
{% endhint %}
{% hint style="info" %}
Button functions may change depending on the operation context to improve usability or prevent accidental presses
{% endhint %}
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: D08 Total Alarm, D09 Total Trigger Condition (Total Trig.), and D10 Total Target.
D08 Enable Totalizer AlarmD08 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 D08 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).D09 Set Total Trigger ConditionD09 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 D09 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).D10 Set Total Target ValueD10 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 D10 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).Totalizer Alarm OperationWhen 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 D08: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.
### D08 Options, RS485 Values, Read/Write Commands, and Formats
| Option | Description | RS-485 Value |
| -------------- | ----------- | ------------ |
| Off (Default) | - | 0 |
| On | - | 1 |
| Do Not Disturb | - | 2 |
---
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