4 Ports RS485 Ethernet Modbus Gateway USR-N540-MQTT
4 Ports RS485 Ethernet Modbus Gateway USR-N540-MQTT
USR-N540 is 4 serial Ports Secure Serial Device Server which can connect RS485 serial devices to the TCP/IP network. It supports bi-directional communication.
● Independent 4 RS485 ports. (3-in-1 Serial port RS232/RS485/RS422 Optional)
● 5-36V wide voltage input.
● Modbus RTU to Modbus TCP, Modbus Polling, Modbus to JSON
● Flow control XON/XOFF
● Secure Client Operation Mode: TCPS, HTTPS. MQTTS
● SSL/TLS Encryption
● Modbus RTU Master, Edge computing
● Hardware watchdog, automatically restarts when the device goes down.
| System Information | |
| Processor | ST Cortex-M7 |
| Basic Frequency | 400MHz |
| Flash | 128K+4M 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 RS485 Ports, can work at the same time) |
| Interface Standard | RS-485: 2 wire (A+,B-) half-duplex |
| Data Bits | 7,8 |
| Stop Bit | 1,2 |
| Parity Bit | Even,Odd |
| Baud Rate | 600bps ~ 921600 bps |
| Flow Control | 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 KΩ |
| 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 ~ 85°C (industry) |
| Storage Temp. | -40 ~ 85°C, 5 ~ 95% RH (no condensation) |
| Input Voltage | DC 9 ~ 36V |
| Working Current | 53mA @ 12V |
| Power | <1W |
Utilities
Documents
[Datasheet] USR-N540-H7-4 Datasheet
[AT Command Manual]ARM Cortex-M7 Series AT command manual V1.0.0
