USR-TCP232-E2 is an embedded TCP/IP module provide solutions to build serial to ethernet connectivity while also controlling your serial device and make data tramission. This article is to introduce ethernet module USR-TCP232-E2:
To realize two-way transparent transmission between COM and TCP/IP,manage COM on remote device over network.
To communicate to multiple serial devices at the same time across a LAN or WAN network.
UART to Ethernet
The global unique MAC address bought from IEEE, defined MAC address is available
Virtual COM ports connect PC/servers to remote serial devices over Ethernet
Hardware flow control RTS/CTS
Modbus TCP to Modbus RTU, work as slave
httpsD Client and Websocket function available
Up to 8 simultaneous clients when act as TCP Server
Support DNS & DHCP, automatically access IP
Two TTL interface can be worked at one time
Reload button, a key restore default Settings
With network transformer,connected to RJ45 directly
Without RS-485 Pull-up and Pull-Down Resistor
Serial Ethernet Module Parameter
| Parameter | Value |
| Input Voltage | DC 3.3 / 5 V |
| Input Current | 120mA @ 3.3V 120mA @ 5V |
| Power | <1W |
| Certificate | CE, FCC, ROHS |
| Size | 55 x 30 x 23.2 (including Ethernet port and pin) |
| Operating Temp. | -40 ~ 85°C (industry) |
| Storage Temp. | -40 ~ 105°C, 5 ~ 95% RH |
| Interface | 2* TTL UART |
| Network Protocol | IP, TCP, UDP, DHCP, DNS, https, ARP, ICMP, Web socket, httpsd client |
| Packing list | USR-TCP232-E2 *1 |