Modbus RTU /Ethernet Gateway• Integrated Serial Port Server (Serial Device Server)
• Modbus RTU Server/ Client • Modbus RTU to MQTT Gateway • Cloud JSON data to Modbus RTU • TCP Server/ Client, UDP, UDP Multicast • TCP Server • Auto-Polling Storage Multi Modbus/TCP Client to Single Modbus RTU Server • Cloud Modbus/TCP to Modbus RTU Client Access Modbus Gateway• Modbus RTU protocol to Modbus/TCP
• RTU/Register Auto Polling and Storage • Allows Multiple points access same serial device • Scheduling Polling Modbus RTU register JSON to Modbus RTU• CSV JSON Table
• Scheduling Polling Modbus RTU register • Scheduling Publish in JSON format • Subscribe support request and Setting Modbus Register
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Modbus RTU to MQTT• Publish RTU data in JSON format
• Subscribe JSON to Modbus RTU by HTTP Post, HTTP Get • NTP support for Network Time Synchronize
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NPS5110
The NPS5110 is a mini-size RS232 device server and IoT gateway specifically designed for industrial environments. It integrates multiple functions, including serial device server, Modbus gateway, MQTT gateway, and virtual COM port device tool. The device features one RS232 DB9 interface and one RJ45 Ethernet port, offering reliable connectivity. Its mini size ensuring ease of deployment, while the terminal power supply allows for a wide power voltage input range of 10~30VDC. The NPS5110 presents a cost-effective and space-efficient solution compared to standard products.
Related Downloads
Inquiry cart
-Virtual COM Device Discovery and Management
-Device Setting
-Cloud MQTT Configuration
-Web Configuration

Network Interface | |
Ethernet | IEEE 802.3 Ethernet 10Base-T with Auto MDI/MDI-X 2KV Surge Protection |
Serial Interface | |
Connector | RS232 DB9 Male |
Serial Parameters | Baud Rate: 300~921600bps, Data Bit: 7~8 Parity Check: None, Odd, Even, Space, Mark Flow Control: None Flow Control |
Service Mode | |
Virtual COM Driver | Windows XP / Windows 7 / Windows 10/ Windows 11 |
TCP | TCP Server for up to 30 TCP clients, or TCP client to up to 7 destination IP |
UDP / UDP Multicasting | UDP Polling & Response by UDP packet between stations UDP Multicast to all station by UDP packet |
Modbus | Modbus RTU to Modbus TCP Modbus TCP to Modbus RTU |
Cloud | MQTT, JSON to Modbus RTU, HTTP Post, HPPT Get |
Network Feature | |
Protocol | Ethernet, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS, Modbus |
Security | TCP with authentication key |
DHCP | DHCP Client for IP and DNS information from DHCP server |
NTP | Network Time Precision (NTP) |
Management | |
System Management | Windows Utility, Virtual COM, WEB Management |
Power Input & Interface Connector | |
Power Input | 10-30VDC Input, Terminal Block |
Mechanical & Installation | |
Installation | Din-Rail, Desktop |
Enclosure | Metal |
IP Protection | IP20 |
Dimension | 48x61x25mm (LxWxH), Packing Box160x123x79mm, 52pcs per Carton |
Environmental | |
Operation Temperature | -25°C~70°C, 0% ~ 90%, Non-Condensing |
Storage Temperature | -40°C~80°C, 0% ~ 90%, Non-Condensing |
Reliability & Warranty | |
MTBF | > 200,000 Hours |
Warranty | 3 Year |
Model Name | Description |
NPS5110-E/U/UK | Mini One-port RS232 Device Server, Modbus, MQTT Gateway, 10~30Vdc |
Package List | |
-Quick Installation Guide -Power Adapter EU or US or UK |