> For the complete documentation index, see [llms.txt](https://docs.lorric.com/qr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/parameters/d-category-options-and-descriptions.md).

# D Category Options and Descriptions

## D01 Paddle Alarm

Alarm - A ,  Alarm of paddle wheel error. Default on, but can be turned off.

| Options        | RS-485 Numbers | Remarks |
| -------------- | -------------- | ------- |
| On             | 1              |         |
| Do Not Disturb | 2              | Default |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D04 Flow Volume Limit Alarm 

Alarm - B,  Alarm when instantaneous flow is out of range. Default on, but can be turned off.

| Options        | RS-485 Numbers | Remarks |
| -------------- | -------------- | ------- |
| Off            | 0              | Default |
| On             | 1              |         |
| Do Not Disturb | 2              |         |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D05 Upper Limit 

Define D04 upper limit of normal flow range.

| Parameter Input Range | Values |
| --------------------- | ------ |
| Default               | 100    |
| Minimum               | 0      |
| Maximum               | 100000 |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D06 Lower Limit 

Define D04 lower limit of normal flow range.

| Parameter Input Range | Values |
| --------------------- | ------ |
| Default               | 0      |
| Minimum               | 0      |
| Maximum               | 99999  |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D07 Hysteresis Percentage %  

For setting the hysteresis range of turning off alarm. The Percentage is the proportion of the range between upper and lower limit.

The range is 0-33%, default 3%.  This parameter needs to be positive value.

| Parameter Input Range | Values |
| --------------------- | ------ |
| Default               | 3      |
| Minimum               | 0      |
| Maximum               | 10     |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D08 Total Alarm 

Alarm - B,  Alarm when cumulative flow is out of range. Default on, but can be turned off.

| Options        | RS-485 Numbers | Remarks |
| -------------- | -------------- | ------- |
| Off            | 0              | Default |
| On             | 1              |         |
| Do Not Disturb | 2              |         |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D09  Total Alarm Trigger Condition

Set-up the target cumulative value alarm condition. Option "greater than" target or "less than" target . Default "greater than" target.

| Options            | RS-485 Numbers | Remarks |
| ------------------ | -------------- | ------- |
| Higher than target | 0              | Default |
| Lower than target  | 1              |         |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D10 Total Target 

Set up alarm target value of cumulative flow speed.

| Parameter Input Range | Values      |
| --------------------- | ----------- |
| Default               | 100         |
| Minimum               | 0           |
| Maximum               | 999,999,999 |

After selecting a command, confirm whether to **Save** or **Not Save**.

## D11 Pulse Overlap 

Alarm B,  Alarm for Pulse Output signal overlaps caused by too long pulse width time parameter E03. Default on, but can be turned off. <mark style="color:orange;">(Applicable to FP-AS310A)</mark>

| Options        | RS-485 Numbers | Remarks |
| -------------- | -------------- | ------- |
| On             | 1              | Default |
| Do Not Disturb | 2              |         |

## D12 Iout Status Alarm

Set Iout status alarm mode. The options are ''on'', ''off'' and ''do not disturb.''&#x20;

The default setting is ''do not disturb''. It means that when an abnormality occurs, the color and LCD displayed on the screen will not change. The number can still be displayed in the communication part, and the bit will show an abnormality on the status page.<mark style="color:orange;">(Applicable to FP-AS310A)</mark>

| Options        | RS-485 Numbers | Remarks |
| -------------- | -------------- | ------- |
| On             | 1              |         |
| Do Not Disturb | 2              | Default |


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