Moxa NPort 5150A-T 1-Port Serial Device Server

Technical Overview

The Moxa NPort 5150A-T is a compact 1-port serial device server designed to make RS-232/422/485 serial devices instantly network-ready via a 10/100BaseT(X) Ethernet connection. It supports versatile operation modes including Real COM, TCP Server/Client, UDP, Pair Connection, Reverse Telnet, and Ethernet Modem. Engineered for industrial environments, it offers a wide operating temperature range and robust surge protection for serial, Ethernet, and power lines, ensuring reliable performance in harsh conditions.

Key Features

1 x RS-232/422/485 serial port (DB9 male connector)
1 x 10/100BaseT(X) Ethernet port (RJ45) with 1.5 kV magnetic isolation
Supports standard baud rates from 50 bps to 921.6 kbps
Operation modes: Real COM, TCP Server/Client, UDP, Pair Connection, Reverse Telnet, Ethernet Modem
Real COM/TTY drivers for Windows, Linux, and macOS platforms
Fast 3-step web-based configuration for easy setup
Surge protection for serial, Ethernet, and power lines (IEC 61000-4-5 compliant)
Durable metal housing and compact form factor
Flexible installation: desktop, wall, or DIN-rail mounting (with optional kit)
Automatic Data Direction Control (ADDC) for RS-485
Adjustable pull high/low resistors (1 kΩ / 150 kΩ) and 120-ohm terminator for RS-485
SNMP MIB-II support for network management
Security protocols: HTTPS (TLS 1.2), AES-128, SHA-1, RSA-1024, SHA-256

Technical Specification Matrix

Parameter	Value
Input Voltage	12 to 48 VDC
Input Current	92.4 mA @ 12 VDC
Power Consumption	< 1 W
Operating Temperature	-40 to 75°C (-40 to 167°F)
Storage Temperature	-40 to 75°C (-40 to 167°F)
Ambient Relative Humidity	5 to 95% (non-condensing)
Housing	Metal
Ethernet Port	1 x 10/100BaseT(X) (RJ45)
Serial Port	1 x RS-232/422/485 (DB9 male)
Baud Rate	50 bps to 921.6 kbps
Ethernet Magnetic Isolation Protection	1.5 kV
Surge Protection (Power)	2 kV (IEC 61000-4-5)
Surge Protection (Serial)	0.5 kV (IEC 61000-4-5)
Surge Protection (Ethernet)	2 kV (IEC 61000-4-5)

Industrial Applications

1. Remote Monitoring in Outdoor Utility Substations

The NPort 5150A-T can connect legacy RS-485 based power meters or sensor arrays in outdoor electrical substations to a central Ethernet-based SCADA system, enabling real-time data acquisition and monitoring.

Problem Solved

Its wide operating temperature range (-40 to 75°C) and robust surge protection for serial, Ethernet, and power lines ensure reliable operation in harsh outdoor environments with temperature extremes and potential electrical transients, integrating critical serial devices into modern IP networks.

SCADARS-485-40 to 75°CSurge ProtectionRemote MonitoringPower AutomationEthernet

2. Factory Floor Machine Integration for Industrial Automation

This device server facilitates the integration of older industrial machinery equipped with RS-232 or RS-422 ports into a modern Ethernet-based factory network for data acquisition, control, and predictive maintenance.

Problem Solved

Many legacy industrial machines rely on serial communication. The NPort 5150A-T bridges this gap, enabling these machines to communicate over TCP/IP, allowing centralized control and data collection without costly equipment replacement. Its durable metal housing and wide temperature range are suitable for typical factory conditions.

Industrial AutomationLegacy EquipmentRS-232RS-422TCP/IPData AcquisitionPredictive MaintenanceMachine Integration

3. Point-of-Sale (POS) System Connectivity in Retail/Logistics

The NPort 5150A-T is ideal for connecting serial barcode scanners, receipt printers, or payment terminals in large retail stores or logistics warehouses to a central server over the existing Ethernet infrastructure.

Problem Solved

It allows existing serial POS peripherals to be quickly integrated into a modern network, simplifying cabling and increasing layout flexibility. The compact size is beneficial for installation in confined spaces, and surge protection ensures reliable operation in commercial settings with fluctuating power.

POS SystemsBarcode ScannersPayment TerminalsRS-232EthernetRetailLogisticsCompact DesignSurge Protection