> 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/fu-tx310-ultrasonic-flowmeter-manual-en-v3/4-setting-up-the-interface/4.4-communication.md).

# 4.4 Communication

| RS485 Baud rate   | Set the speed of communication over RS485 <mark style="color:orange;">\*</mark>Baud rate settings 38400, 57600,                 Do not use settings other than N81.                                                                         |
| ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Node ID           | Set the node ID number for Modbus protocol                                                                                                                                                                                                  |
| RS485 Byte Format | <p>Set the RS485 of Byte Format providing the following four formats                                            1) N.8.1</p><p>2) N.8.2 </p><p>3) O.8.1 </p><p>4) E.8.1</p>                                                                 |
| RS485 Endianness  | <p>Set RS485 of Endianness  providing the following four type                                                   1) Big Endian</p><p>2) Little Endian                              </p><p>3) Mid Big Endian </p><p>4) Mid Little Endian </p> |


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