Description
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	Setup Software	Testing Software
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USR-TCP232-E2 is a dual UART to Ethernet converter module, industrial design, built-in fully optimized TCP/IP protocol stack, stable and reliable; supports virtual serial port VCOM; supports DNS domain name resolution, Keep-alive mechanism, hardware watchdog.

●Support TCP server, TCP client and UDP, HTTP operating modes
●Support RS-485 enable pin of an external RS-485 transceiver
●Support flow control CTS/RTS, XON/XOFF
●Auto-MDI/MDIX,RJ45 port with 10/100Mbps
●Flexible data packet condition for the serial interface
●Support DHCP to configure IP address and other network configuration parameters
●Support DNS for remote server domain name lookup
●Support Modbus RTU to Modbus TCP/UDP
●Support Modbus over TCP/UDP
●Support three configuration method: serial AT command, PC software and web page
●Support local firmware upgrade by PC software
●Support “Keep-Alive” to guarantee TCP connection
●Support user password authorization for security
●Industrial temperature range (-40℃~+85℃)

Specifications

Item	Parameter	Description
Hardware Parameters	Input Voltage	VCC:3.0～3.6V, (3.3V recommended) VDD:4.75～5.5V, (5.0V recommended)
	Input Current	210mA@3.3V/155mA@5.0V
	Dimensions	50.5x30.0x23.2mm(LWH)
	Encapsulation	DIP encapsulation
	Operating Temperature	-40~85℃
	Storage Temperature	-40~105℃
	Operating Humidity	5%～95% RH(non-condensing)
	Storage Humidity	5%～95% RH(non-condensing)
	Certifications	CE/FCC/ROSH
Interface Parameters	Ethernet Port Spec.	RJ45, 10/100Mbps, auto MDI/MDIX
	Ethernet Port No.	1
	Serial Port Spec.	UART TTL 3.3V
	Serial Port No.	2
	Serial Baud Rate	600-1M(bps)
	Data Bit	7, 8
	Parity	None, Even, Odd
	Flow Control	None, RTS/CTS, XON/XOFF
	RS-485 Pull-up and Pull-down Resistor	2.2KΩ
Software Parameters	Network Protocol	IP/TCP/UDP/DHCP/DNS/HTTP/ARP/ICMP
	IP Mode	Static IP, DHCP
	Modbus TCP	Support
	Websocket	Support
	HTTP Client	Support
	UDP Broadcast	Support
	User Configuring	Setup utility, webpage, AT commands
	Serial Packets Cache	Dynamic packet cache. For example: When the packet length is 10 byte, the serial port can cache 450 packets(4.5KB). When the packet length is 1460 bytes, the serial port can cache 10 packets(14.6KB).
	Ethernet Packets Cache	48Kbyte

TTL to Ethernet Modules/Dual UART to Ethernet Module USR-TCP232-E2

M7 version VS M4 version

Basic Function

E2 can realize two-way data transmission between TTL UART and Ethernet,
Dual UART ports work independently at the same time, without mutual influence.

Block Diagram

working modes for TTL to Ethernet Modules/Dual UART to Ethernet Module USR-TCP232-E2

Multiple Working Modes

E2 supports five working modes: TCP Client, TCP Server, UDP Client,
UDP Server, and HTTP Client, which can be flexibly
selected according to the usage scenario.

Product Details

Hardware Watchdog Protection

Built-in hardware watchdog, stable
operation for 24 hours without downtime.

Configuration Software Upgrade

Parameters can be configured across network segments, the page is more concise.
The firmware can be upgraded directly through the built-in webpage, which is convenient and quick.