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Y208-R 8-Port Ethernet DTU Specification ​

Y208-R Product

Reference: Technical manual coming soon. Related: Serial Gateway Overview

Contents ​

  1. Overview
  2. Ordering Information
  3. Key Features
  4. Technical Specifications
  5. Interfaces and Indicators
  6. Mechanical and Installation
  7. Application Notes

1. Overview ​

Y208-R is the highest-density Ethernet DTU in the Yengear portfolio. It integrates eight independent serial channels, each configurable as RS232 or RS485. Dual RJ45 uplinks, LAN1 and LAN2, provide redundant IP paths or network segmentation, while Socket A and B on every port support concurrent TCP, UDP, HTTP, and MQTT sessions. The platform inherits the same firmware stack used by Y202-R and Y204-R, including Modbus RTU to Modbus TCP conversion, JSON upload, heartbeat, and browser-based management.

ItemDescription
MCU and FirmwareDual-core 240 MHz MCU, RTOS, dual watchdog
Serial Ports8 x RS232 / RS485, grouped as COM1 to COM8
Ethernet2 x 10/100Base-T RJ45 with independent MAC
Power Input9 to 36 VDC terminal plus dual DC barrel input
Mounting35 mm DIN-rail industrial enclosure

Highlights ​

  • Up to 16 Socket contexts, 8 ports x Socket A/B, for high-density SCADA, MES, or cloud access
  • Dual RJ45 uplinks allow LAN1 and LAN2 segmentation, for example SCADA plus enterprise traffic
  • Firmware parity with smaller Y20x models, including registration packets, heartbeat, JSON upload, and HTTP OTA
  • EMC-hardened power stage with redundant connectors keeps eight serial buses online

2. Ordering Information ​

2.1 Model Naming ​

Y208-R-XX

  • Y208: 8-port DTU platform
  • R: Ethernet uplink through RJ45
  • XX: Serial interface combination, typically all RS232 or all RS485

2.2 Typical SKU Options ​

SKUSerial ConfigurationTypical Application
Y208-R-2328 x RS232High-density legacy serial device networking
Y208-R-4858 x RS485Multi-feeder substations, metering clusters, large factory units

3. Key Features ​

  1. Eight Independent Serial Channels: High-density access for large control panels and telemetry clusters.
  2. Sixteen Socket Contexts: Socket A and B on every port for concurrent or redundant services.
  3. Dual Ethernet Uplinks: LAN1 and LAN2 support path redundancy or network segmentation.
  4. Industrial Protocol Support: Supports TCP, UDP, HTTP, MQTT, and Modbus RTU to Modbus TCP conversion.
  5. Remote Maintenance Ready: Supports browser configuration, JSON upload, heartbeat, and HTTP OTA.

4. Technical Specifications ​

4.1 Electrical and Hardware ​

ParameterSpecification
ProcessorDual-core 240 MHz MCU
Power Input9 to 36 VDC terminal plus dual DC barrel
ProtectionEMC hardening, dual watchdog
Mounting35 mm DIN-rail enclosure

4.2 Serial and Network ​

ParameterSpecification
Serial Ports8 x RS232 / RS485
Ethernet2 x 10/100Base-T RJ45
IP ModeIndependent LAN1 and LAN2 addressing, static IP or DHCP
Socket ChannelsSocket A and B for each serial port

4.3 Software Functions ​

ItemDescription
ProtocolsTCP / UDP / HTTP / MQTT
Gateway FunctionModbus RTU to Modbus TCP
Value-Added FunctionsRegistration packet, heartbeat, JSON upload, HTTP OTA
MaintenanceBrowser console and remote AT

5. Interfaces and Indicators ​

Interface / IndicatorDescription
COM1 to COM8Eight serial interfaces for field devices
LAN1 / LAN2Dual Ethernet uplinks
Power Terminal / Dual BarrelRedundant power input options
Status LEDsPower, link, and data activity
Reload ButtonParameter recovery and maintenance

6. Mechanical and Installation ​

6.1 Dimension Drawing ​

Y208-R Dimensions

This drawing can be used for cabinet installation and wiring clearance planning for the Y208-R.

  • 35 mm DIN-rail enclosure for industrial control cabinets
  • Designed for high-density serial aggregation in substations, plants, and telemetry cabinets
  • Recommended where multiple serial buses must stay physically independent

7. Application Notes ​

  • High-density serial aggregation: Bring up to eight serial devices online through one platform.
  • Segmented network architecture: Separate OT and IT traffic through LAN1 and LAN2.
  • Large-scale Modbus retrofit: Convert multiple Modbus RTU devices to Modbus TCP for upper-layer systems.
  • 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