# Parameter Settings

### Setup Procedure

<details>

<summary><strong>Button Functions</strong> <em>(Click to Expand)</em></summary>

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:

* <img src="/spaces/i4ECt41Kyy9211OWazj4/files/bdd75120acea6361d128fd3deec06f1a8277e667" alt="" data-size="line"> **Blue Button -** Leftmost button: Return, exit, or save settings.

Gray Arrow Buttons:

* <img src="/spaces/i4ECt41Kyy9211OWazj4/files/2e37e572251371c6020ab6d9e11c1fcdd5ef0369" alt="" data-size="line"> **Left Gray Button:** Previous Page, decrease value, or select item
* <img src="/spaces/i4ECt41Kyy9211OWazj4/files/50a67ff5744401e217d5b9e838da3f7909be732f" alt="" data-size="line"> **Right Gray Button:** Next Page, increase value, or select item
* <img src="/spaces/i4ECt41Kyy9211OWazj4/files/6c0b22a2048cf9b2afd86fac7a65e414feb967d4" alt="" data-size="line"> **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 %}

</details>

{% stepper %}
{% step %}

### **Language Settings**

The default language is English. The unit supports English and Traditional Chinese. To change the language, go to [H04 Language](/qr/fp-as310-english-v5/parameters/h-system/h04-language.md).

{% code fullWidth="false" expandable="true" %}

```
H04 Language Setting Steps
• From the main screen(green backlight), 
  press Orange Button(Setup) to enter settings(orange backlight).
• Use Gray Arrow Buttons to select H.System, press Orange Button(Enter).
• Select H04 Language, press Orange Button(Enter).
• Choose language, press Orange Button(Set) to set choosen language.
• Press Orange Button(Set) again to confirm.
• Press Blue Button(ESC) to return to main screen.
```

{% endcode %}

<figure><img src="/files/KSgMZKokOrYpTeYrYu2c" alt="" width="288"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Pipe Type Setting

The FP-AS310 uses a pre-calibrated **T-connector (tee fitting)** matched to the main unit. Selecting the correct pipe type in **A01** is critical for accurate measurement.

Before setting the pipe type, check the tee fitting:

* **If the tee fitting serial number matches the main unit serial number:** Set **A01** to the pipe size marked on the tee fitting.
* **If they do not match:** A01 must still be set to match the size of the **installed tee fitting** to ensure the correct calibration curve is applied.

{% hint style="warning" %}
All FP-AS310 units are factory-calibrated as matched tee fitting and main unit pairs. Using a mismatched combination may result in inaccurate flow measurement. The user assumes responsibility for measurement accuracy in this case.
{% endhint %}

#### A01 Pipe Type

Select the T-connector spec. Please refer to [A01 Pipe Type](/qr/fp-as310-english-v5/parameters/a-measure-setup/a01-pipe-type.md).

```
A01 Pipe Type Setting Steps
• From the main screen (green backlight), 
  press Orange Button (Setup) to enter settings (orange backlight).
• Select A. Measure by pressing Orange Button (Enter).
• Use Gray Arrow Buttons to select A01 Pipe Type, 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).
```

<figure><img src="/files/yiPAt3mn7aKiAsqkkV2X" alt="" width="288"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### **Main Screen Status Check**

After setup, return to the main screen. The LCD backlight will return to **green**, indicating the device is in normal monitoring mode and ready to measure.\
If the flow meter is installed correctly and flow is present, the flow rate will be displayed on the main screen. Check if flow direction is expected, if there's a problem in the measurement, refer to the [troubleshooting guide](#troubleshooting).

{% hint style="info" %}
ⓘ The main screen default display is **Flowrate** in **LPM (litres per minute)**. To change the display unit or home page, refer to the **B Unit** and [**H11 Home Page**](/qr/fp-as310-english-v5/parameters/h-system/h11-home-page.md) parameters.
{% endhint %}

<img src="/files/B1l2XNApZzqF41K3jgV4" alt="" width="288">
{% endstep %}
{% endstepper %}

### **Troubleshooting**

If any of the following issues occur during installation or setup, adjust the system as instructed.

<details>

<summary><strong>Unit Adjustment</strong></summary>

The default volume unit is **L (litres)** and the default time unit is **M (minute)**. The main screen displays **LPM** by default.

* Set volume unit: [**B01 Vol Unit**](/qr/fp-as310-english-v5/parameters/b-unit/b01-vol.-unit.md)
* Set time unit: [**B02 Time Unit**](/qr/fp-as310-english-v5/parameters/b-unit/b02-time-unit.md)
* Set total flow unit: [**B03 Total Unit**](/qr/fp-as310-english-v5/parameters/b-unit/b03-total-unit.md)

</details>

<details>

<summary><strong>Incorrect Flow Direction</strong> (Reading Shows Negative or Wrong Value)</summary>

The FP-AS310 can only display positive flow. If the flow direction is reversed relative to the device installation, adjust [**A05 Direction**](/qr/fp-as310-english-v5/parameters/a-measure-setup/a05-direction.md) to correct the reading.

</details>

<details>

<summary><strong>Unstable or Fluctuating Flow Reading</strong></summary>

If flow readings fluctuate rapidly, adjust **A04 Damping** to reduce data swings. The default damping value is 3; higher values reduce fluctuations. Set according to desired measurement stability and response speed. Refer to [**A04 Damping**](/qr/fp-as310-english-v5/parameters/a-measure-setup/a04-damping.md)

</details>

<details>

<summary><strong>Inaccurate Flow Measurement</strong></summary>

When the measured flow is consistently higher or lower than the actual value, or need to be calibrated to match a reference meter, use [**A02 Scale Factor**](/qr/fp-as310-english-v5/parameters/a-measure-setup/a02-scale-factor.md) to apply a multiplier correction to the instantaneous flow reading.

</details>

<details>

<summary><strong>Clear Accumulated Total Flow</strong></summary>

To reset the totalized flow counter to zero, use **C02 Del Total**.

Refer to [**C02 Del Total**](/qr/fp-as310-english-v5/parameters/c-total-and-history/c02-del.-total.md).

</details>

<details>

<summary><strong>Communication Settings (RS485 / NPN / Analog Output)</strong></summary>

All communication-related settings are configured in the **E Commute** parameter group. This includes [Modbus ID](/qr/fp-as310-english-v5/parameters/e-commute/e-commute-fp-as310r/e04-modbus-id.md), [baud rate](/qr/fp-as310-english-v5/parameters/e-commute/e-commute-fp-as310r/e05-baud.md), [Byte Format](/qr/fp-as310-english-v5/parameters/e-commute/e-commute-fp-as310r/e15-byte-format.md), [bit order](/qr/fp-as310-english-v5/parameters/e-commute/e-commute-fp-as310r/e16-bit-order.md) and [Endianness](/qr/fp-as310-english-v5/parameters/e-commute/e-commute-fp-as310r/e17-endianness.md).

Refer to the [**E Commute**](/qr/fp-as310-english-v5/parameters/e-commute.md) parameter group.

</details>

### **Advanced Calibration Settings**

Refer to the full parameter table for detailed settings.\
See: [**Full Parameter Reference**](/qr/fp-as310-english-v5/parameters.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.lorric.com/qr/fp-as310-english-v5/installation-and-setup/parameter-setup.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.