- Description
- Package Content
Details
Comes with US plug power adapter. More options for the power plug: US, EU
RS485 to Ethernet Converter, Easy-to-use, High-speed, Low-power, High-stability, Upgradable
* This module does not support Modbus TCP, if you need to use this function, please purchase RS232/485 TO ETH.
Overview
The RS485 TO ETH module provides an easy way to communicate between RS485 and RJ45 port Ethernet, it can be configured via webpage.
Features
- M0 series 32-bit ARM processor, fast speed, high efficiency
- 10/100M Auto-MDI/MDIX ethernet interface, regardless of cross-over or straight-through cable
- Configurable RS485 baudrate (600bps~230.4Kbps), supports five parity check options: None, Odd, Even, Mark, Space
- Available working modes: TCP Server, TCP Client, UDP Server, UDP Client, HTTPD Client (supports GET and POST)
- Configurable via webpage, AT commands, serial protocol, and network protocol, provides configuration protocol which can be integrated to your own software
- Supports customized heartbeat packets, make sure the connection is truthful, as well as for actively retrieving sensor data
- Supports customized registration packets, auto passing the registered packet as identifier after the connection is established, so that different devices can be distinguished
- Supports customized webpage, allows user to customize the module configuration page
- Supports RFC2217-like protocol, be able to communicate with devices whose serial setting (baudrate, data bit, etc.) may change
- KeepAlive mechanism, detects broken connection, auto re-connecting
- Supports time-out reboot (no-data reboot), ensures a long-term stable connection, configurable reboot time
- Supports DNS domain name resolution, configurable DNS server
- Supports DHCP, auto-obtained IP or static IP
- Firmware is upgradable via the network
- Restore to factory settings via software and/or hardware
- Comes with default MAC address, which is customizable
- Provided software: module configuration software, TCP/UDP testing tool, VCOM virtual serial port software
- Example code: host computer (socket ), VB, C++, Delphi, Android, iOS, etc.
Specifications
- Ethernet:
- Connector: 4-pin RJ45
- Communication rate: 10/100Mbps
- Interface protection: 1.5KV electromagnetic isolation
- Protocols: IP, TCP, UDP, ARP, ICMP, DHCP, DNS, HTTPD Client
- TX cache: 6Kbyte
- RX cache: 4Kbyte
- RS485:
- Connector: screw terminal (A+, B-, GND)
- Data bit: 5bit, 6bit, 7bit, 8bit
- Stop bit: 1, 2
- Parity bit: None, Odd, Even, Mark, Space
- Baudrate: 600bps~230.4Kbps
- RX cache: 800byte
- Hardware flow control: none
- Interface protection:
- 2KV ESD protection
- RS485 pull up/down registers: 2.2KΩ
- Power:
- Power supply: 5.0~7.0V (5V recommended)
- Operating current: 150mA (@5V)
- Power consumption: <1W
- Interface protection: reverse-proof, ESD protection, anti-surge
- Environment:
- Operating temperature: -25~75°C
- Storage temperature: -40~105°C
Dimensions

Development Resources
Wiki : www.waveshare.com/wiki/RS485_TO_ETH
Selection guide
RS485 TO ETH (B) | RS485 TO POE ETH (B) | RS232/485/422 TO ETH (B) | RS232/485/422 TO POE ETH (B) | 2-CH RS485 TO ETH (B) | 2-CH RS485 TO POE ETH (B) | RS232 RS485 TO ETH (B) | RS232 RS485 TO POE ETH (B) | |
---|---|---|---|---|---|---|---|---|
Description | Common network port | PoE network port + Electrical isolation | Multi interfaces + common network port + Electrical isolation | Multi interfaces + PoE network port + Electrical isolation | 2-Ch RS485 + Common network port + Electrical isolation | 2-Ch RS485 + PoE network port + Electrical isolation | RS232 + RS485 + Common network port + Electrical isolation | RS232 + RS485 + PoE network port + Electrical isolation |
Product Type | Serial server, Modbus Gateway, MQTT Gateway | |||||||
Serial Port Type | Single serial port server | RS232/485/422 choose one, single serial port server | Dual serial ports server | |||||
Power Supply methods | Screw terminal | |||||||
- | PoE port | - | PoE port | - | PoE port | - | PoE port | |
- | DC 5.5 power port | |||||||
Voltage Range | DC 9~24V | DC 6~36V | DC 6~45V | |||||
Isolation Protection | Without isolation | Power isolation, Signal isolation | ||||||
Communication | ||||||||
Ethernet | RJ45 network port | RJ45 with PoE support, IEEE 802.3af compliant | RJ45 network port | RJ45 with PoE support, IEEE 802.3af compliant | 2-ch RJ45 network port | 2-ch RJ45 with PoE support, IEEE 802.3af compliant | 2-ch RJ45 network port | 2-ch RJ45 with PoE support, IEEE 802.3af compliant |
10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection | ||||||||
Serial port | RS485 | Isolated RS485 | Isolated RS232/485/422 (choose one, only one interface can be used for communication at the same time) | 2-ch Isolated RS485 (the 2 channels can receive and transmit independently at the same time) | Isolated RS232 + Isolated RS485 (the 2 channels can receive and transmit independently at the same time) | |||
Serial specification | ||||||||
Baudrate | 300 ~ 115200 bps | |||||||
Parity bit | none, odd, even, mark, space | |||||||
Data bit | 5 ~ 9 bits | |||||||
Flow control | N/A | |||||||
Software | ||||||||
Protocol | ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS | |||||||
Configuration | host, web browser, device management functions library | |||||||
Communication method | TCP/IP direct communication, VCOM | |||||||
Operating mode | TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast | |||||||
Environment requirement | ||||||||
Operating temperature | -40℃ ~ 85℃ | |||||||
Humidity range | 5% ~ 95% relative humidity | |||||||
Dimensions (L × W × H) |
87.0×36.0×59.0mm | 88.7×72.5×24.2mm | 78.0×72.5×24.2mm |
Weight: 0.212 kg
Quick Overview
- RS485 TO ETH x1
- 5V power adapter x1
