NPS5431S - NetPortServer Compact Din-Rail 4-Port RS485 Device Server with Modbus and MQTT Support
4× RS‑485 Serial Ports (2‑Wire, up to 32 devices)
Enables multiple serial devices to be networked via Modbus RTU for scalable industrial monitoring.
Built-in 2 kV Isolation on RS‑485 Ports
Protects against electrical surges and ground loops, ideal for high-noise or electrically harsh environments.
Single 100 Mbps Ethernet Interface
Provides reliable wired connectivity for Modbus TCP integration and remote access.
Serial-to-Ethernet Data Routing
Supports Modbus RTU to Modbus TCP conversion for seamless communication between legacy devices and modern networks.
Auto‑Polling and Data Buffering
Automatically queries Modbus registers and stores responses for efficient data acquisition.
Compact DIN‑Rail Design for Panel Mounting
Space-saving enclosure ideal for industrial cabinet installation within constrained environments.
Wide‑Voltage Operation (10–30 VDC) with Terminal Block Power Input
Flexible power source options support deployment in diverse industrial or field conditions.
Robust Temperature Range (–25 °C to +70 °C, 5–95% RH Non‑Condensing)
Designed to perform reliably in harsh environments such as machinery rooms or control panels.
Virtual COM Port Support over TCP/UDP
Enables legacy applications to interface with remote serial devices as if connected locally.
Ideal Applications
Surge-prone industrial zones, electrically noisy environments like rail systems, substation serial relay cabinets, or heavy machinery enclosures requiring RS‑485 protection.