Moxa NPort 5650-8-DT-T Serial Device Server

Technical Overview

The Moxa NPort 5650-8-DT-T device server conveniently and transparently connects 8 serial devices (RS-232/422/485) to an Ethernet network. It features a compact desktop design, dual 10/100BaseT(X) Ethernet ports, and a wide operating temperature range of -40 to 75°C, making it ideal for connecting industrial serial devices to an IP-based LAN. The server supports various operation modes, including TCP Server, TCP Client, UDP, and Real COM, and offers multiple management options for flexible deployment and centralized control.

Key Features

8 serial ports supporting RS-232/422/485 standards.
Compact desktop design for space-limited installations.
Dual 10/100BaseT(X) auto-sensing Ethernet ports with RJ45 connectors.
Easy IP address configuration via built-in LCD panel.
Configurable by Telnet console, web browser (HTTP/HTTPS), or Windows utility.
Supports versatile socket operation modes: TCP server, TCP client, UDP, and Real COM.
SNMP MIB-II support for comprehensive network management.
Selectable 1 kΩ and 150 kΩ pull high/low resistors for RS-485 applications.
Includes a 120-ohm terminator for RS-485 to prevent signal reflection.
Automatic Data Direction Control (ADDC) for RS-485.
Built-in 1.5 kV magnetic isolation protection for Ethernet ports.
Supported input voltage range of 12 to 48 VDC with reverse polarity protection.
Wide operating temperature range from -40 to 75°C (-40 to 167°F).
Durable metal housing.

Technical Specification Matrix

Parameter	Value
Operating Temperature	-40 to 75°C (-40 to 167°F)
Input Voltage	12 to 48 VDC
Input Current	615 mA @ 12 VDC
Ethernet Ports	2 x 10/100BaseT(X) (RJ45 connector)
Magnetic Isolation Protection	1.5 kV (built-in)
Serial Ports	8 ports, RS-232/422/485
Serial Connector	DB9 male
Baudrate	50 bps to 921.6 kbps
Housing Material	Metal
Installation	Desktop, DIN-rail mounting (with optional kit), Wall mounting (with optional kit)
Reverse Polarity Protection	Supported
Serial Line ESD Protection	15 kV for all signals
Serial Port Surge Protection	0.5 kV

Industrial Applications

1. Industrial Automation for Legacy Machine Integration

Seamlessly integrates up to 8 legacy serial-based PLCs, HMIs, or other control devices into a central Ethernet-based SCADA or MES system in manufacturing facilities.

Problem Solved

Bridges the communication gap between older serial protocols (RS-232/422/485) and modern Ethernet networks, enabling remote monitoring and control of machinery without requiring costly hardware replacements. The wide operating temperature range (-40 to 75°C) ensures reliable operation in diverse industrial environments.

SCADAMESPLC integrationRS-232/422/485Ethernet conversionIndustrial networkWide temperature

2. Remote Data Acquisition in Harsh Environments

Deploys in outdoor kiosks, utility substations, or remote monitoring stations to collect data from multiple serial sensors (e.g., environmental sensors, power meters) and transmit it over an IP network.

Problem Solved

Provides robust serial-to-Ethernet connectivity in challenging conditions, leveraging its -40 to 75°C operating temperature, durable metal housing, and wide 12-48 VDC power input. The 1.5 kV Ethernet magnetic isolation and 15 kV serial ESD protection safeguard against electrical disturbances prevalent in these settings.

Data loggingRemote monitoringUtility substationEnvironmental sensingESD protectionSurge protectionWide temperatureMetal housing

3. Point-of-Sale (POS) System Connectivity

Connects multiple serial peripherals such as barcode scanners, receipt printers, and payment terminals in retail or hospitality environments to a central network for streamlined operations.

Problem Solved

Centralizes communication for up to 8 serial POS devices, simplifying cabling infrastructure and management. Its compact desktop design is suitable for confined counter spaces, while reliable serial-to-Ethernet conversion ensures smooth, efficient transaction processing.

POS systemsRetail automationSerial peripheralNetwork integrationPayment terminalBarcode scannerCompact design