> For the complete documentation index, see [llms.txt](https://wimaniot.gitbook.io/wiman-communication-technologies/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wimaniot.gitbook.io/wiman-communication-technologies/iot-models/converters/we62c-tcp-converter-v.1.0.md).

# WE62C TCP Converter V.1.0

## Introduction

In Industrial Internet of Things (IIoT), **protocol conversion is the backbone of system integration**. Most field devices such as energy meters, temperature controllers, and PLC-based instruments communicate using **Modbus RTU over RS485**, while higher-level systems like **SCADA, cloud platforms, and monitoring servers typically use Modbus TCP over Ethernet or IP networks**.

This mismatch creates a communication gap — and that’s where protocol conversion becomes essential.

The most common requirement in industrial automation is **Modbus RTU to Modbus TCP conversion**, especially when legacy Modbus RTU devices need to be integrated into Ethernet-based or cloud-connected systems. In practical deployments, two types of conversion are typically required:

* **Modbus RTU → Modbus TCP** (Field device to SCADA/Cloud)
* **Modbus TCP → Modbus RTU** (SCADA/Server to field devices)

<img src="/files/87220152d036fb30e53115d79d169fbbe7d28589" alt="" width="375">

#### **PIN Details**

<table data-header-hidden><thead><tr><th width="92.22219848632812"></th><th width="145.111083984375"></th><th></th></tr></thead><tbody><tr><td><strong>Pin No.</strong></td><td><strong>Pin Name</strong></td><td><strong>Description</strong></td></tr><tr><td>1</td><td><strong>+12V</strong></td><td>DC IN - Input voltage: 12V~24V/1A.</td></tr><tr><td>2</td><td><strong>GND</strong></td><td>Ground</td></tr><tr><td>3</td><td><strong>RXD / D+ / A</strong></td><td>RS232 Txd / RS485 Data+</td></tr><tr><td>4</td><td><strong>TXD / D- / B</strong></td><td>RS232 Rxd / RS485 Data-</td></tr><tr><td>5</td><td><strong>NC</strong></td><td>NC</td></tr><tr><td>6</td><td><strong>NC</strong></td><td>NC</td></tr><tr><td>7</td><td><strong>NC</strong></td><td>NC</td></tr><tr><td>8</td><td><strong>NC</strong></td><td>NC</td></tr><tr><td>RJ45</td><td><strong>LAN</strong></td><td>10/100 Mbps</td></tr></tbody></table>

## Hardware Description

### Specifications

#### **System**

| Parameter      | Specification |
| -------------- | ------------- |
| CPU            | ARM Cortex    |
| SRAM           | 32 Kbytes     |
| Flash Memory   | 256 Kbytes    |
| WDT (Watchdog) | Yes           |

#### **LAN Port**

| Parameter | Specification               |
| --------- | --------------------------- |
| RJ45 Port | 10/100 Mbps Auto Negotiable |

#### **Serial Ports**

| Parameter          | Specification                                                       |
| ------------------ | ------------------------------------------------------------------- |
| RS232 Utility Port | RS-232: TxD, RxD, GND (Used for device configuration and debugging) |
| RS485              | RS-485: D+, D- (Used for communication with other devices)          |
| Baud Rate          | 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps                   |

#### **Power**

| Parameter         | Specification  |
| ----------------- | -------------- |
| Operating Voltage | 12VDC to 24VDC |

#### **Mechanical**

| Parameter              | Specification       |
| ---------------------- | ------------------- |
| Casing                 | Plastic             |
| Dimensions (W × L × H) | 90mm × 100mm × 25mm |

#### **Environmental**

| Parameter                 | Specification                |
| ------------------------- | ---------------------------- |
| Operating Temperature     | -25°C to +55°C               |
| Ambient Relative Humidity | 5% to 95% RH, Non-condensing |