USR-N540 4 Ports RS232 RS485 RS422 to Ethernet RJ45 Modbus RTU Gateway Serial Device Servers with SSL/TSL MQTT
SPECIFICATIONS
Brand Name: NONE
High-concerned chemical: none
Model Number: N540
Origin: Mainland China
USR-N540,a four serial device server,can realize transparent transmission between TCP/UDP data package and RS232/RS485/RS422 interface.USR-N540, based on ARM processor,is of low power,rapid speed and high stability. And N540 is internally integrated with TCP/IP protocol. User can easily realize embedded device networking.
Unique Features
1. Modbus gateway, Modbus poll
2. Network printer function
3. ESD+lighting protection, watchdog mechanism
Cortex-M4 kernel,industrial working temperature range and TCPIP protocol stack.
Auto-MDI/MDIX,RJ45 port with 10/100Mbps
TCP Server,TCP Client,UDP Client,UDP Server and HTTPD Client work mode
Four ports can work independently at the same time
Can distinguish which serial port connects to the device via port number
Support virtual serial port and provide corresponding software USR-VCOM
Serial baud rate from 600bps to 230.4K bps
DNS and DHCP supported
Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
Built-in webpage;also can customize webpage for users
The global unique MAC address bought from IEEE (begin with D8-B0-4C);user can define MAC address
Support upgrade firmware via network
Support keepalive,rapidly detect dead links
Support account and password,can be used to page login and network settings
Support one channel Websocket,realize bidirectional transparent transmission between webpage and serial 0
Support Modbus RTU to Modbus TCP
Support UDP broadcast function
Four serial ports;each serial can work as rs232,rs485 or rs422;DB9 female;provide rs485/rs422 converter
Four channel serial communication indicator: TX/RX
Support DC adapter and 5.08-2 terminal power supply
Reload button,one key to restore default settings
RJ45 with Link/Data indicator light,built-in isolation transformer and 2 KV electromagnetic isolation
Input Voltage: DC 9 ~ 24V
Working Current: 53mA @ 12V
Certificate: CE, FCC, ROHS
Size: 222 x 122 x 29 mm
Operating Temp.: -40 ~ 85°C (industry)
Storage Temp.: -40 ~ 85°C, 5 ~ 95% RH(no condensation)
Interface: Each port can work as RS-232,RS-485 and RS-422;can work at the same time
Network Protocol: IP, TCP, UDP, DHCP, DNS, HTTP, ARP,ICMP, Web socket, Httpd client

- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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