Moxa NPort 5232-T 2-Port RS-422/485 Device Server

Technical Overview

The Moxa NPort 5232-T is a 2-port RS-422/485 serial device server designed to make industrial serial devices Internet-ready. Its compact size and extended operating temperature range make it ideal for connecting serial devices like PLCs, meters, and sensors to an IP-based Ethernet LAN, allowing software to access them from anywhere over a local network or the Internet. It supports standard TCP/IP protocols and various operation modes, including TCP Server, TCP Client, and UDP.

Key Features

Equipped with 2 x RS-422/485 serial ports for versatile connectivity.
Features 1 x 10/100Mbps Ethernet port (RJ45 connector) for network integration.
Compact design allows for easy installation in space-constrained industrial environments.
Supports versatile socket operation modes including TCP Server, TCP Client, and UDP.
Compatible with Real COM/TTY drivers for seamless integration with existing software.
Includes patented ADDC® (Automatic Data Direction Control) for 2-wire and 4-wire RS-485 communication.
Features built-in 15 KV ESD protection for all serial signals, enhancing reliability.
Supports SNMP MIB-II for efficient network management.
Designed for a wide operating temperature range of -40 to 75°C.
Constructed with a durable metal housing for industrial applications.

Technical Specification Matrix

Parameter	Value
Input Voltage	12 to 48 VDC
Input Current (max)	359.6 mA @ 12VDC
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)
IP Rating	IP30
Ethernet Ports	1 x 10/100BaseT(X) (RJ45)
Magnetic Isolation Protection (Ethernet)	1.5 kV built-in
Serial Ports	2 x RS-422/485
Serial Connector	Terminal block (5 contacts per port)
Serial Line Protection	15 KV ESD protection for all signals
Baudrate	110 bps to 230.4 Kbps
Housing	Metal

Industrial Applications

1. Remote Industrial Sensor Monitoring in Harsh Environments

The NPort 5232-T is ideal for connecting distributed RS-485 industrial sensors, such as temperature, pressure, or flow meters, in challenging environments. Its extended operating temperature range of -40 to 75°C and robust metal housing ensure reliable operation in unheated facilities or outdoor installations. The device server converts serial data to Ethernet, enabling centralized, real-time monitoring and data acquisition over an IP network from a control room.

Problem Solved

Provides reliable, wide-temperature connectivity for legacy RS-485 industrial sensors, integrating them into modern Ethernet-based data acquisition and monitoring systems for remote access in harsh conditions.

RS-485Industrial SensorsRemote MonitoringData AcquisitionExtended TemperatureEthernetHarsh Environments

2. PLC and HMI Integration in Factory Automation

In factory automation, the NPort 5232-T can bridge two RS-485 based PLCs or Human-Machine Interfaces (HMIs) to a standard Ethernet network. This allows supervisory control and data acquisition (SCADA) systems or other industrial control software to communicate with and manage equipment on the factory floor using standard TCP/IP protocols. The device's compact size facilitates installation within existing control cabinets.

Problem Solved

Seamlessly integrates traditional serial-communicating PLCs and HMIs into modern factory Ethernet networks, enhancing data exchange and control capabilities for SCADA and centralized automation systems.

PLCHMISCADAFactory AutomationRS-485EthernetTCP/IPIndustrial Control

3. Building Automation Systems for Distributed Devices

For large-scale building automation systems, where numerous devices such as access control readers, HVAC controllers, or lighting control modules utilize RS-485, the NPort 5232-T serves as an effective serial-to-Ethernet gateway. It can connect two disparate RS-485 device networks to the building's main Ethernet infrastructure, consolidating data and control. The wide 12-48 VDC input voltage offers flexibility for varied power supplies within a building's electrical system.

Problem Solved

Connects and integrates distributed RS-485 building automation devices (e.g., access control, HVAC) into a central Ethernet-based building management system, simplifying control and data aggregation.

Building AutomationHVAC ControlAccess ControlRS-485Ethernet BackboneDistributed SystemsBuilding Management System