Modbus device server NPS5431S

EthernetRS-485LAN

The NPS5431S is a din-rail design serial server/Modbus gateway with four RS485 ports featuring 1500V optocoupler isolation. It effectively isolates interference on the RS485 bus, ensuring stable device operation and reliability, making it suitable for environments with RS485 bus interference. It integrates multiple functions, including serial device server, Modbus gateway, MQTT gateway, RS485-to-JSON gateway, and virtual COM port device tool. It has built-in surge protection for the power supply, supports a wide voltage range of 10–30V, and uses a terminal-type power connection with a grounding wire on the casing. The two mounting ears on the top can be installed either horizontally or vertically, allowing for flexible installation on a backplane or desktop. It comes with two 10M/100M Ethernet ports, allowing connection to either one of them. The other Ethernet port can be used for cascading multiple NPS5431S via a network cable, enabling expansion to 8, 12, or 16 serial ports. 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