- Model Number: USR-N540
- Brand Name: PUSR
- Origin: Mainland China
- Certification: CE,FCC,RoHS
● Secure Client work mode: TCPS, HTTPS, MQTTS
● SSL/TLS Encryption in TCP client, HTTP Client and MQTT modes
● MQTT protocol for AWS/OneNET/ Alibaba IoT Platform
● High Reliability and Stability:EFT-IEC61000-4-4 Level 3(±2KV),Built-in hardware watchdog,ESD-IEC61000-4-2 Level 4
● Redundant Power Supply
● Support TCP server/client, UDP server/client, https client, Virtual COM
● 4-port 485 Modbus Gateway
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System Information |
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Processor |
ST Cortex-M7 |
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Basic Frequency |
400MHz |
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Flash |
128K+4M byte |
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Ethernet |
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Port Number |
1 |
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Interface Standard |
8 pin RJ45 |
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Rate |
10/100 Mbps, MDI/MDIX, auto switch between cross and direct connection |
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Protection |
2KV electromagnetism isolation, shell insulation blocking |
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Network Protocol |
IP,TCP,UDP,DHCP,DNS,https,ARP,ICMP,Web socket,httpsd client |
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Receive Buffer |
Max 16k bytes buffer |
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Serial |
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Port Number |
4 ports RS485, (can work at the same time) |
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Interface Standard |
RS485: 2 wire (A+,B-) half-duplex |
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Data Bits |
7,8 |
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Stop Bit |
1,2 |
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Parity Bit |
Even,Odd |
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Baud Rate |
600bps ~ 921600 bps |
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Flow Control |
XON XOFF |
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Buffer |
Send and receive 2k bytes respectively |
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Protection |
RS-485: anti-static 2KV,lightning protection |
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RS485/RS422/RS232 Pull-up and Pull-Down Resistor |
2.2 KΩ |
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Software |
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Virtual Serial（USR-VCOM） |
Windows 2000 or higher(32 bit/64 bit) |
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Configuration |
Built-in webpage, computer set-up software, serial command |
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Basic Parameter |
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Size |
222 x 122 x 29 mm (including shell and terminals) |
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Operating Temp. |
-40 ~ 85°C (industry) |
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Storage Temp. |
-40 ~ 85°C, 5 ~ 95% RH (no condensation) |
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Input Voltage |
DC 9 ~ 36V |
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Working Current |
53mA @ 12V |
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Power |
<1W |
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More |
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Certificate |
CE,FCC,ROHS |
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Warranty |
2 years |
If you want to know more or download files, Please lick here:
4-port RS485 Modbus RTU to MQTT Converters | Modbus RTU to Modbus TCP Converters-PUSR IOT
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