NPS6131A / NPS6131AI - NetPortServer Wireless Din-Rail RS485 to WiFi Device Server with Modbus and MQTT Support
Compact Din‑Rail Mount RS‑485 to WiFi/Ethernet Gateway
Converts RS‑485 to TCP/IP over WiFi (802.11b/g) and Ethernet for flexible integration with modern networks.
Modbus RTU ↔ Modbus TCP Bridge with MQTT Capability
Supports Modbus protocol conversion and JSON-based MQTT communication for cloud and IIoT applications.
Virtual COM Port with TCP/UDP Server and Multicast Modes
Enables seamless serial-over-IP communication through virtual COM, TCP server/client, UDP, and UDP multicast.
JSON Auto‑Polling, Scheduling, and HTTP Publish/Subscribe
Automatically polls Modbus registers, supports scheduled JSON publish, and handles subscribe requests via HTTP POST/GET.
Cloud JSON Integration and Transparent Data Handling
Bridges Modbus RTU to JSON for remote visualization, supports CSV-to-JSON conversion, and integrates cloud platforms.
Dual WiFi Modes: AP and Client with Security Support
Operates in Access Point or Client mode with encryption options: WEP64/128, TKIP, AES; security via WEP, WPA-PSK, WPA2-PSK.
Wide Voltage Input and Rugged Industrial Design
Supports 10–30 VDC input, IP40-rated housing, and wide operating temperature range of –25 °C to +70 °C.
NPS6131AI Adds 1.5 kV Isolation on RS‑485 Line
Enhances electrical protection in noisy or surge-prone industrial environments.
Ideal Applications
Remote Modbus device integration, legacy PLC modernization, wireless sensor gateways, factory automation, and protocol conversion in field cabinets.