Description
The USR-N540 from USR-IOT is a high-performance and versatile 4-port serial converter that allows seamless conversion of RS232, RS485, and RS422 interfaces to Ethernet. This device supports a range of operating modes such as TCP Server/Client, UDP Server/Client, and HTTPD Client, making it ideal for diverse industrial applications.
One of the key features of the USR-N540 is its redundant power supply, which can be provided either through a DC 5-36V input or via terminal power supply. This ensures uninterrupted operation, even in the event of a power outage.
The USR-N540 provides Modbus gateway functionality, with support for Modbus RTU to Modbus TCP and Modbus Polling. This feature makes it easy to integrate with existing Modbus systems and streamline data exchange between devices.
The device also supports flow control XON/XOFF and provides two sockets for serial-to-web connectivity. The configuration can be done easily through a webpage, AT command, or setup software, making it an effortless and user-friendly experience.
The USR-N540 from USR-IOT is a powerful and reliable 4-port serial converter that provides seamless and efficient communication between serial and Ethernet interfaces. It is an ideal solution for a range of industrial applications, where reliable and secure data transfer is critical.
Resources
- [User Manual] USR-N5X0 User Manual
- [User Manual] USR-N540 User Manual
- [User Manual] USR-N540 Quick Start Guide
- [Datasheet] USR-N540 Datasheet
- [AT Command] USR-N540-AT-Command-Set_V1.0.0
- [AT Command Manual]ARM Cortex-M7 Series AT command manual V1.0.0
- [application case] USR-N5X0 Connects to USR Cloud
- [PC Test Software] USR-TCP232-Test-V1.3
- [Configuration Software]USR-TCP232-M4_V2.3.4.106
- [ Virtual COM Software]USR-VCOM_V3.7.2.529_Setup
- [Socket_Demo] Socket_Demo.zip
- [Config Protocol] E45&M4 Series Config Protocol V1.4
Specifications
| System Information | |
| Processor | Cortex-M4 |
| Basic Frequency | 120MHz |
| Flash | 512K byte |
| Ethernet | |
| Port Number | 1 |
| Interface Standard | 8 pin RJ45 |
| Rate | 10/100 Mbps, MDI/MDIX, auto switch between cross and direct connection |
| Protection | 2KV electromagnetism isolation, shell insulation blocking |
| Network Protocol | IP,TCP,UDP,DHCP,DNS,https,ARP,ICMP,Web socket,httpsd client |
| Receive Buffer | Max 16k bytes buffer |
| Serial | |
| Port Number | 4 (Each port can work as RS-232,RS-485 and RS-422, can work at the same time) |
| Interface Standard | RS-232: DB9 pin type, RS-485: 2 wire (A+,B-), RS-422 (A,B,Y,Z) |
| Data Bits | 5,6,7,8 |
| Stop Bit | 1,2 |
| Check Bit | None,Even,Odd,Space,Mark |
| Baud Rate | 600bps ~ 230.4Kbps |
| Flow Control | RTS/CTS XON XOFF |
| Buffer | Send and receive 2k bytes respectively |
| Protection | RS-485: anti-static 2KV,lightning protection |
| RS-485 Pull-up and Pull-Down Resistor | 2.2 KOhm |
| Software | |
| Virtual Serial（USR-VCOM） | Windows 2000 or higher(32 bit/64 bit) |
| Configuration | Built-in webpage, computer set-up software, serial command |
| Basic Parameter | |
| Size | 222 x 122 x 29 mm (including shell and terminals) |
| Operating Temp. | -40 ~ 85C (industry) |
| Storage Temp. | -40 ~ 85C, 5 ~ 95% RH (no condensation) |
| Input Voltage | DC 9 ~ 36V |
| Working Current | 53mA @ 12V |
| Power | <1W |
| More | |
| Certificate | CE,FCC,ROHS |
| Warranty | 2 years |
Function Structure
Work Mode
TCP Server
The USR-N540 serial to IP converter operates by listening on the configured port for incoming TCP client connections. Any data that is sent out through the serial ports is transparently transmitted to all connected clients via the N540 serial to IP converter.
TCP Client Mode
The USR-N540 serial to IP converter initiates a TCP connection to the specified IP address. If the initial connection attempt fails, the converter will repeatedly attempt to reconnect until a successful connection is established. Upon establishing a successful connection, the device enables transparent bi-directional transmission of data between the PC and the serial device.
UDP Mode
The USR-N540 serial to IP converter transmits data to a specified IP address and port. If the connection attempt fails, the device will continue trying to reconnect until a connection is established. Simultaneously, the converter listens to the designated port and forwards all received data to the connected serial device.
HTTPD Client
The USR-N540 Modbus serial to IP converter provides support for transmitting serial data to a designated server using HTTPS protocol.
USR-N540 Support Modbus Gateway
