SMALL SIZE: Compact and panel mounting
WEBPAGE DIY: Build your own brand
MODBUS GATEWAY: Modbus RTU to Modbus TCP
Modbus multi-host Polling
WORK MODES: TCP Server, Tcp client, UDF mode, HTTPD Client
With serial device server, traditional serial devices can be connected to local networks and the Internet.Then users can transform traditional serial device into loT device.
One port RS232, RS485 or RS422 to Ethernet converters USR-TCP232-304/306 can transmit data transparently between TCP/IP and RS232/RS485/RS422.
RS232/RS485/RS422 makes it possible to control pan tilt positioner with Ethernet and not limited to the short working distance of RS485 or RS422.
Simple configuration and easy to use.
Model | USR-TCP232-304 | USR-TCP232-306 |
Processor | ARM Cortex-M0, 48MHz | |
Power Input | DC: 5.0~7.0 V, Connector: DC 5.5*2.1 mm | DC: 5.0~36.0 V, Connector: 5.5*2.1 mm & 2 pin terminal block |
Consumption | ||
Ethernet Port | 1 x RJ45, 10/100Mbps, auto MDI/MDIX | |
Serial Port | RS485 | RS232/485/422(Not work at the same time) |
Baud Rate | 600~230.4 Kbps | |
Data Bits | 5,6,7,8 | |
Stop Bit | 1,2 | |
Parity Bit | None, Odd, Even, Mark, Space | |
Serial Packeting | Packeting Time: Four-byte sending time Packeting Length: 400 Bytes | |
Serial Packet Cache | Receive:2KBytes | |
Reload Button | √ | |
Dimension(L*W*H) | 73.2*70.0*25.0 mm | 98.0×86.0×25.0 mm |
Installation | Wall Mounting | |
Operating Temp | -25~75℃ | |
Storage Temp | -40~105℃ | |
Operating Humility | 5%~95% RH(non-condensing) | |
Storage Humility | 5%~95% RH(non-condensing) | |
Indicators | None | PWR, WORK,LINK,TX,RX |
Network Protocol | IP, TCP/UDP, DHCP, RCMP, HTTP, IPv4, DNS | |
IP Mode | DHCP, STATIC IP | |
DNS Service | √ | |
Config Method | AT Command, Built-in webpage, Config Software, Config Protocol | |
Work Mode | TCP Server/TCP Client/UDP Server /UDP Client/Httpd Client | |
Modbus Gateway | Modbus RTU to Modbus TCP, Multi-host Modbus Polling | |
User-Defined Webpage | √ | |
TCP Server | 16 clients | |
Network Packet Cache | Send: 6K Bytes Receive: 4K Bytes | |
Additional Features | RFC2217 Similar, Heartbeat Packet, Registration Packet, Index, No Data Restart | |


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