# E15 Byte Format

### Definition

Sets the data format for Modbus RTU communication. Default: N,8,1 (No parity, 8 data bits, 1 stop bit).

This parameter offers **four byte packet formats**:

| Option | Name                            |
| ------ | ------------------------------- |
| N.8.1  | No parity bit with 1 stop bit   |
| N.8.2  | No parity bit with 2 stop bits  |
| O.8.1  | Odd parity bit with 1 stop bit. |
| E.8.1  | Even parity bit with 1 stop bit |

The diagram below illustrates each packet format. **ST** represents the start bit, **D0–D7** are data bits, **SP** is the stop bit, **OP** indicates odd parity, and **EP** indicates even parity.\
(Each diamond shape represents one bit.)

<div align="left"><figure><img src="https://docs.lorric.com/qr/~gitbook/image?url=https%3A%2F%2F598628291-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FYbqXsfQyaXKmr6mxssGy%252Fuploads%252FLsx1JRjVa9908XZc3c1a%252Fuart_byte_format.png%3Falt%3Dmedia%26token%3D05c4ddf7-0fbe-4487-85f4-3cde6a2c2147&#x26;width=768&#x26;dpr=4&#x26;quality=100&#x26;sign=674c2433&#x26;sv=2" alt=""><figcaption></figcaption></figure></div>

#### **Modbus Formats** Converter

{% embed url="<https://codepen.io/philo_lorric/pen/BagqoRj>" %}

### Notes

1. This parameter cannot be modified via RS485.&#x20;
2. For details, refer to the [RS485 and Modbus RTU ](broken://pages/b85c0d01a25eb3e3bc2f56ebe3f6f8ea98b1e18a)Settings section.

### Operation Procedure

```
E15 Byte Format Setting Steps
• From the main screen (green backlight), 
  press Orange Button (Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select E. Commute  , press Orange Button (Enter).
• Use Gray Arrow Buttons to select E15 Byte, 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).
```

### E15 Options, RS485 Values, Read/Write Commands, and Formats

<table><thead><tr><th width="196.08984375">Option</th><th>Description</th><th>RS-485 Value</th><th data-hidden>RS-485 對應數字</th></tr></thead><tbody><tr><td>N.8.1 (Default)</td><td>No parity, 8 data bits, 1 stop bit</td><td>-</td><td>0</td></tr><tr><td>N.8.2</td><td>No parity, 8 data bits, 1 stop bit</td><td>-</td><td>3</td></tr><tr><td>O.8.1</td><td>Odd parity, 8 data bits, 1 stop bit</td><td>-</td><td>2</td></tr><tr><td>E.8.1</td><td>Even parity, 8 data bits, 1 stop bit</td><td>-</td><td>1</td></tr></tbody></table>


---

# 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/parameters/e-commute/e-commute-fp-as310r/e15-byte-format.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.