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

PACKAGE CONTENT

Development Resources

Wiki : www.waveshare.com/wiki/RS485_TO_ETH

Selection Guide

Comparison	UART TO ETH	RS485 TO ETH	RS232/485 TO ETH
Processor	Cortex-M0	Cortex-M0	Cortex-M4 (up to 120MHz frequency)
Ethernet	RJ45 (10/100Mbps self-negotiation)
	Protocol: IP, TCP, UDP, ARP, ICMP, DHCP, DNS, HTTPD Client
	Cache: TX 6Kbyte, RX 4Kbyte		Cache: TX 16Kbyte, RX 16Kbyte
Serial	UART	RS485	RS232+RS485 (allow to work at the same time)
	Baudrate: 600bps~460.8Kbps	Baudrate: 600bps~230.4Kbps
	Hardware flow: NOT supported		Hardware flow: supported
	Data bit: 5, 6, 7, 8
	Stop bit: 1, 2
	Parity bit: None, Even, Odd, Space, Mark
	Cache: RX 800byte		Cache: TX 2Kbyte, RX 2Kbyte
	Framing condition: 4 byte time interval, or 400 byte in length		Framing condition: 4 byte time interval, or customizable 0~1460 byte in length
Features	customized heartbeat packets, customized registration packets, customized webpage, RFC2217-like protocol, KeepAlive, timeout auto reboot, short connection, firmware upgrade via network
			Modbus gateway, Websocket (webpage to serial)
Working Modes	TCP Server, TCP Client, UDP Server, UDP Client, HTTPD Client
Client Count	on TCP Server mode, customizable 1~16 Clients		on TCP Server mode, supports 2-ch Socket, 8 Clients per ch
Configuration	Built-in webpage, Host computer config software, Serial commands
Interface Protection	Power: reverse-proof, ESD protection, anti-surge
	Ethernet: 1.5KV electromagnetic isolation
		RS485: 2KV ESD protection, 2.2KΩ pull up/down registers
			lightning-proof, over-current protection
Power Supply	3.3V/5V	5~7V	5~36V
Operating Current	150mA@5V	110mA@5V	86.5mA@5V
Temperature	Operating Temperature: -25～75℃		Operating Temperature: -40～85℃
	Storage Temperature: -40～105℃
Dimensions	50.5mm × 22.6mm × 15mm	70mm × 63.6mm × 25mm	82.8mm × 85.7mm × 25mm