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Y202-R Standard Ethernet DTU Specification
Reference: Technical manual coming soon. Related: Serial Gateway Overview
Contents
- Overview
- Ordering Information
- Key Features
- Technical Specifications
- Interfaces and Indicators
- Mechanical and Installation
1. Overview
Y202-R is the dual-port Ethernet model in the Yengear standard DTU family. It integrates two independent serial channels, each configurable as RS232 or RS485, together with a 10/100Base-T Ethernet uplink. Each serial channel maps to Socket A and B, enabling concurrent TCP, UDP, HTTP, or MQTT data paths as well as Modbus RTU to Modbus TCP conversion.
| Item | Description |
|---|---|
| MCU and Firmware | Dual-core 240 MHz MCU, RTOS scheduler, dual watchdogs |
| Serial Ports | 2 x RS232 / RS485, software-selectable combination |
| Ethernet Uplink | 10/100Base-T RJ45, static IP or DHCP |
| Power Input | 9 to 36 VDC terminal input, optional DC barrel input |
| Mounting | DIN-rail enclosure with removable terminal block |
Highlights
- Two independent serial buses, each with dual Socket contexts for concurrent SCADA and cloud access
- Industrial EMC design and
9 to 36 VDCpower input for substation and HVAC cabinets - Built-in browser console with default address
192.168.10.8, loginadmin/admin - Consistent standard DTU firmware stack with registration packets, NET/UART heartbeat, HTTP OTA, and remote AT access
2. Ordering Information
2.1 Model Configuration
Y202-R is a dual-port DTU with an RJ45 Ethernet uplink. The ordering suffix selects the serial configuration: -2H for two RS232 ports, -4H for two RS485 ports, or -6H for one of each.
For family codes and examples, see Model Groups and Suffixes.
2.2 SKU Matrix
| SKU | Serial Configuration |
|---|---|
| Y202-R-2H | 2 x RS232 |
| Y202-R-4H | 2 x RS485 |
| Y202-R-6H | 1 x RS232 + 1 x RS485 |
2.3 Standard Package
1 x Y202-R DTU
1 x DB9 breakout for COM1
1 x pluggable terminal for COM2 and power
DIN-rail clip, quick-start card, warranty information
Optional: 12 V power adapter, USB console cable
3. Key Features
- Dual Serial Channels: Two isolated serial channels, each with Socket A and B for concurrent service access.
- Broad Protocol Support: Supports TCP, UDP, HTTP client, MQTT client, and Modbus RTU to Modbus TCP conversion.
- Industrial-Grade Power:
9 to 36 VDCinput with watchdog protection for unattended operation. - Browser-Based Configuration: Built-in Web UI for IP settings, serial settings, and protocol management.
- Data Enhancement Functions: Supports registration packets, heartbeat packets, auto reconnect, and remote AT.
4. Technical Specifications
4.1 Electrical and Hardware
| Parameter | Specification |
|---|---|
| Processor | Dual-core 240 MHz MCU |
| Power Input | 9 to 36 VDC, terminal input, optional DC barrel |
| Protection | Industrial EMC design, dual watchdog |
| Mounting | DIN-rail industrial enclosure |
4.2 Serial and Network
| Parameter | Specification |
|---|---|
| Serial Ports | 2 x RS232 / RS485, selectable by SKU |
| Baud Rate | 9600 bps (default) |
| Ethernet | 10/100Base-T RJ45 |
| IP Mode | Static IP / DHCP |
| Socket Channels | Socket A and B for each serial port |
4.3 Software Functions
| Item | Description |
|---|---|
| Protocols | TCP / UDP / HTTP / MQTT |
| Gateway Function | Modbus RTU to Modbus TCP |
| Maintenance | Web UI, remote AT, HTTP OTA |
| Value-Added Functions | Registration packet, NET/UART heartbeat, reconnect logic |
5. Interfaces and Indicators
| Interface / Indicator | Description |
|---|---|
| COM1 / COM2 | Dual serial interfaces for RS232 or RS485 field devices |
| RJ45 | Ethernet uplink for LAN or SCADA network |
| Power Terminal | Wide-range DC input |
| Status LEDs | Power, link, and data activity indication |
| Reload Button | Used for parameter recovery and maintenance |
6. Mechanical and Installation
6.1 Dimension Drawings
Standard interface version:
Dual RS485 version:
These drawings can be used for cabinet cutout and installation clearance planning for the corresponding Y202-R interface version.
- Standard DIN-rail enclosure for direct cabinet installation
- Removable terminal blocks simplify field wiring and replacement
- Recommended for retrofit cabinets where two independent serial buses must be retained
- Manufacturer: Hunan YenGear Tech Co., Ltd.
- Address: Room 21014, Building 1, Fudi Xingguang Tiandi, Yingxin Road, Yuhua District, Changsha, Hunan, China
- Email: hi@yengear.com
- Website: www.yengear.com