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Y201-R Mini Ethernet DTU Specification
Reference Manual: Y201-R Technical Manual
Document Control
| Item | Detail |
|---|---|
| Version | V1.0.0 |
| Release Date | November 2025 |
| Product Category | Mini Ethernet DTU |
Table of Contents
- Overview
- Ordering Information
- Key Features
- Technical Specifications
- Interfaces & Indicators
- Mechanical & Installation
- Application Notes
1. Overview
Y201-R is the MiniLink Series Ethernet member of the Y201 palm-sized DTU family. It retrofits RS485/RS232/TTL panels with 10/100M Ethernet uplink, providing transparent serial-to-IP bridging, dual-socket management, and a browser-based operating console. Each serial channel is paired with two independent sockets (A/B) supporting TCP/UDP/HTTP/MQTT, allowing SCADA, PLC, and cloud services to connect simultaneously. The device ships with wide-input DC power, EMC-hardening, and Modbus RTU ↔ TCP gateway capability for seamless industrial deployment.
| Item | Description |
|---|---|
| MCU & OS | Dual-core 240 MHz industrial MCU with RTOS and hardware watchdog |
| Serial Interfaces | RS485 (2-pin), RS232 (3-pin), TTL (3-pin), selectable per deployment |
| Ethernet Uplink | 10/100Base-T RJ45 with auto MDI/MDIX and DHCP/static IP modes |
| Dimensions | 74.6 × 22.6 × 18.1 mm (without mounting ears) |
| Mounting | DIN-rail clip or dual-ear panel mount |
Positioning Highlights
- Palm-sized Ethernet DTU that keeps existing serial wiring intact while adding RJ45 access.
- Built-in Modbus RTU/TCP conversion, registration packets, and heartbeats for deterministic SCADA links.
- Web console (default 192.168.10.8, admin/admin) accelerates provisioning without dedicated tools.
2. Ordering Information
2.1 Model Naming
Y201-R-IF
- R: Ethernet (RJ45) uplink.
- IF: Serial interface option (485 = RS485 default, 232 = RS232, TTL = 3.3 V TTL).
2.2 SKU Table
| SKU | Serial Interface | Notes |
|---|---|---|
| Y201-R-485 | RS485 2-wire | Default shipment for fieldbus retrofits |
| Y201-R-232 | RS232 3-wire | Point-to-point and legacy PLC integration |
| Y201-R-TTL | 3.3 V TTL | Direct MCU/embedded controller integration |
2.3 Standard Package
1× Y201-R MiniLink Ethernet DTU, 1× 5-pin power/serial plug, DIN clip, digital quick guide, warranty card.
Optional accessories: 9–36 VDC power adapter, RS485 terminal cables, DIN side-mount bracket.
3. Key Features
- Ethernet-Optimized Serial Server – Dual-core 240 MHz MCU with two sockets per serial port; supports TCP Server/Client, UDP Server/Client, HTTP(S) Client, MQTT Client, and Aliyun-friendly profiles.
- Wide Voltage & EMC Protection – 9–36 VDC input, reverse-polarity guard, EFT/ESD protection (IEC 61000-4-2 Level 4) for noisy cabinets.
- Flexible Serial Access – RS485/RS232/TTL selection with configurable baud (1.2–460.8 kbps), parity, data bits, stop bits, and auto 485 direction control.
- Modbus Gateway Built-In – Toggleable Modbus RTU ↔ Modbus TCP conversion for direct SCADA connectivity without rewriting PLC logic.
- Programmable Packets & Heartbeats – Length/interval-based serial packaging, registration packets (FIRST/EVERY/ALL), and NET/UART heartbeats to maintain uplink awareness.
- Browser-Based Provisioning – Embedded web UI (status/system/port tabs) for IP setup, serial parameters, socket profiles, and firmware maintenance.
- Remote Diagnostics – Network AT channel, HTTP firmware upgrade, and watchdog-driven reconnect/reboot policies for unattended deployments.
4. Technical Specifications
4.1 Electrical & Environmental
| Parameter | Specification |
|---|---|
| Supply Voltage | 9~36 VDC |
| Typical Current | 110 mA @ 12 V (Ethernet link up) |
| Operating Temperature | -35 °C ~ +75 °C (standard), -40 °C ~ +85 °C (extended) |
| Storage Temperature | -40 °C ~ +85 °C |
| Humidity | 5% ~ 95% RH, non-condensing |
| ESD/EFT | IEC 61000-4-2 Level 4, EFT ±2 kV |
4.2 Serial Interfaces
| Parameter | Specification |
|---|---|
| Modes | RS485 / RS232 / TTL (one active at a time) |
| Baud Rate | 1,200 ~ 460,800 bps (default 115,200) |
| Data Bits | 7 or 8 |
| Stop Bits | 1 or 2 |
| Parity | NONE / ODD / EVEN |
| Flow Control | NFC (RS232), auto-direction (RS485) |
| Packetization | Length trigger 64–1024 bytes; interval trigger 1–300 ms |
4.3 Ethernet Interface
| Parameter | Specification |
|---|---|
| Connector | RJ45, 10/100Base-T, auto MDI/MDIX |
| IP Modes | Static (default 192.168.10.8) / DHCP client |
| Services | HTTP configuration server, TCP/UDP sockets, HTTP Client, MQTT Client |
| Throughput | Up to 8 TCP clients per socket in Server mode |
4.4 Firmware Capability
| Feature | Detail |
|---|---|
| Socket Profiles | Socket A: TCP Server/Client, UDP Server/Client, HTTP Client, MQTT Client; Socket B: TCP Client, UDP Server/Client |
| Registration Packet | Modes FIRST / EVERY / ALL with IMEI/ICCID/user-defined payloads |
| Heartbeat | NET or UART heartbeat, 1–65,535 s, auto-pause in AT command mode |
| Modbus Gateway | RTU ↔ TCP conversion toggle with port-level enable |
| Aliyun Helper | Maps ProductKey/DeviceName/DeviceSecret to MQTT credentials |
| OTA | HTTP download & auto reboot; USB Micro-B for local DFU |
5. Interfaces & Indicators
| Group | Description |
|---|---|
| Power | 5-pin pluggable terminal: V+, V-, RS485 A/B or RS232 TX/RX depending on SKU |
| Serial | RS485 2-pin, RS232 3-pin, TTL 3-pin headers share the same footprint |
| Ethernet | RJ45 with LINK/ACT LEDs |
| USB | Micro-USB for local firmware upgrade (driver required) |
| LED Indicators | POWER (steady = power OK), WORK (fast blink before IP acquisition, slow blink after link up), DATA (off = idle, on = socket connected, blink = traffic) |
| Button | Reload: hold 3–10 s to restore stored parameters; >10 s triggers factory reset |
6. Mechanical & Installation
| Item | Value |
|---|---|
| Dimensions | 74.6 × 22.6 × 18.1 mm (body only) |
| Weight | 36 g typical |
| Enclosure | PC/ABS blend, UL94 V-0 flame rating |
| Mounting | 35 mm DIN rail clip or dual M3 ears (70 mm spacing) |
Installation guidelines:
- Keep ≥10 mm clearance for airflow and cable bend radius near RJ45.
- Ground shielded twisted-pair cable at one side to minimize EMI on RS485 runs.
- Fuse the DC supply (1 A slow-blow) close to the power source.
7. Application Notes
- Ethernet SCADA Retrofits: Replace aging serial device servers with a MiniLink form factor, enabling redundant TCP Server + MQTT uplinks per socket A/B.
- Power & HVAC Panels: Use the Modbus RTU/TCP converter to expose downstream meters or controllers to BMS platforms without reprogramming field devices.
- OEM Remote Diagnostics: Combine registration packets, NET heartbeats, and HTTP OTA to monitor distributed controllers over enterprise LANs.
For register maps, socket examples, and step-by-step web configuration, refer to the Y201-R Technical Manual.
- Manufacturer: Hunan Yanji Tech Co.,Ltd
- Address: Room 21014, Unit 1, Fudixingguang plaza, Yuhua district Yingxin road, Changsha, Hunan, P.R. China
- Email: hi@yanjiiot.com
- Website: www.yanjiiot.com