NPS5151 - NetPortServer Compact RS232/422/485 Device Server with Modbus and MQTT Support
Universal RS‑232 / RS‑422 / RS‑485 Serial Interface
Supports one serial port via DB9 (RS‑232) or terminal block (RS‑422/RS‑485), compatible with diverse legacy device protocols.
Modbus RTU to Modbus TCP & MQTT Gateway
Converts serial Modbus RTU data into Modbus TCP or JSON-formatted MQTT messages for seamless cloud and SCADA system integration.
Cloud JSON Configuration to Modbus RTU
Supports writing Modbus register values via HTTP Post/Get requests using JSON format, enabling remote command and control.
Auto-Polling & Shared Access from Multi Modbus/TCP Clients
Schedules Modbus RTU data polling and stores results, allowing multiple Modbus/TCP clients to access one serial device reliably.
TCP Server/Client, UDP / Multicast Network Support
Flexible data connectivity via TCP server (up to 30 clients), TCP client, UDP unicast or UDP multicast channels for device communication.
Serial Device Server with Virtual COM Port Mapping
Enables legacy applications on Windows/Linux/macOS to treat remote serial ports as if they were local COM ports.
Flexible Serial Settings: 1 200–115 200 bps, 5–9 Data Bits, Parity
Configurable to support various baud rates and parity settings for industrial compatibility.
Built-in NTP Time Synchronization
Ensures accurate timestamping for scheduled polling and MQTT messages in network environments.
Industrial-Grade Power & Mechanical Design
Operates with DC 10–30 V input, via terminal block or DC‑jack; compact metal housing supports DIN‑rail or desktop mounting in industrial settings.
Extended Environmental Tolerance
Withstands –25 °C to +70 °C and 5–95% RH non-condensing environments; includes 2 kV Ethernet surge protection for industrial reliability.