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Y201-R Mini Ethernet DTU Specification ​

Y201-R

Reference: Y201-R Technical Manual

Contents ​

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

1. Overview ​

Y201-R is the Ethernet model in the Y201 mini DTU family. It bridges serial devices to Ethernet networks and uses a dual-core 240 MHz MCU, 5 to 36 VDC wide-range power input, and selectable RS485, RS232, or TTL serial interfaces. The device provides two Socket channels for network communication.

It supports TCP and UDP transparent transmission, HTTP client, MQTT client, and Modbus RTU to Modbus TCP conversion. Typical applications include industrial data acquisition, building control, energy metering, and serial device retrofit projects.

ItemDescription
PositioningSerial-to-Ethernet industrial DTU
ProcessorDual-core 240 MHz MCU
Supply Range5 to 36 VDC
Serial InterfaceRS485 / RS232 / TTL, depending on SKU
Network InterfaceRJ45 Ethernet
ConfigurationWeb UI in a browser

Highlights ​

  • Dual Socket channels A and B for multi-center data access
  • Modbus RTU to Modbus TCP protocol conversion
  • Registration packets, heartbeat packets, and auto-reconnect
  • HTTP and MQTT cloud connectivity, including Alibaba Cloud MQTT mapping
  • Browser-based configuration with no dedicated PC utility required

2. Ordering Information ​

2.1 Model Naming ​

Y201-R-IF

  • R: Ethernet uplink through RJ45
  • IF: Serial interface type, 485, 232, or TTL

2.2 SKU List ​

SKUSerial InterfaceTypical Application
Y201-R-485RS485Industrial bus and meter networking
Y201-R-232RS232Legacy serial device networking
Y201-R-TTLTTLDirect connection to embedded controller boards

2.3 Standard Package ​

1 x Y201-R device, quick guide, warranty information.
Optional accessories: power adapter, serial cable harness, DIN mounting parts.

3. Key Features ​

  1. Dual-Socket Architecture: Each serial port maps to Socket A and B for main-link and backup-link separation.
  2. Broad Protocol Coverage: Supports TCP server/client, UDP server/client, HTTP client, and MQTT client.
  3. Modbus Gateway: Can switch between transparent mode and Modbus RTU to Modbus TCP conversion mode.
  4. Registration Packet Modes: Supports FIRST, EVERY, and ALL.
  5. Heartbeat Keepalive: Supports both network heartbeat and serial heartbeat for online status monitoring.
  6. Auto Reconnect: TCP client reconnects automatically on connection failure, with about a 1 s retry interval.
  7. Web-Based Maintenance: Default address 192.168.10.8, default login admin/admin.

4. Technical Specifications ​

4.1 Electrical and Hardware ​

ParameterSpecification
ProcessorDual-core 240 MHz MCU
Supply Voltage5 to 36 VDC
Serial InterfaceRS485 / RS232 / TTL, depending on model
Network InterfaceRJ45 Ethernet

4.2 Network and Protocol Capability ​

ItemSpecification
Socket ATCP server / TCP client / UDP server / UDP client / HTTP client / MQTT client
Socket BTCP client / UDP server / UDP client
TCP Server ConcurrencyUp to 8 clients per port
TCP Client BehaviorConnects automatically after IP acquisition and reconnects on failure
HTTPSupports HTTP 1.0 / 1.1, GET / POST / AUTO
MQTTSupports standard MQTT and Alibaba Cloud MQTT format

4.3 Gateway and Data Functions ​

ItemDescription
Modbus GatewayDisabled by default; converts Modbus RTU and Modbus TCP when enabled
Registration Packet ModesFIRST / EVERY / ALL
Heartbeat DirectionNetwork heartbeat for TCP/UDP client, serial heartbeat for serial side
AT-State ImpactHeartbeat transmission pauses while the device is in AT command mode

5. Interfaces and Indicators ​

5.1 Hardware Interfaces ​

InterfaceDescription
Power InputDevice power input
Serial PortRS485 / RS232 / TTL, depending on SKU
RJ45 PortNetwork access and debugging

5.2 Status and Maintenance ​

  • LEDs indicate power, runtime status, and data activity.
  • The Web UI shows status, system information, and port configuration.
  • Parameters must be saved and then applied by reboot.

6. Installation and Access ​

6.1 Initial Access ​

  1. Power on the device and connect the PC to the RJ45 port with an Ethernet cable.
  2. Set the PC NIC to the same subnet as the device.
  3. Open 192.168.10.8 in a browser.
  4. Log in with admin/admin.

6.2 Configuration Recommendations ​

  1. Configure the device IP first and keep it on the same subnet as the host.
  2. Set serial parameters to match the field device.
  3. Select the required Socket protocol, such as TCP, UDP, HTTP, or MQTT.
  4. Enable Modbus gateway, registration packet, and heartbeat as needed.
  5. Save parameters and reboot the device.

6.3 Mechanical Dimensions ​

Y201-R Dimensions

This dimension drawing applies to the Y201 mini enclosure and can be used as an installation reference for the Y201-R.

7. Application Notes ​

  • Serial-to-Ethernet transparent transmission: Forward PLC, meter, and data logger serial data to a LAN or host system.
  • Modbus retrofit: Enable gateway mode when the host uses Modbus TCP and the field device uses Modbus RTU.
  • Cloud connectivity: Push serial data to business platforms through HTTP client or MQTT client.
  • Dual-link architecture: Separate local monitoring and cloud upload with Socket A and B for better resilience.

For detailed configuration steps and protocol examples, see the Y201-R Technical Manual.

  • 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