General
Number of serial ports	2
Serial standard	RS-232/422/485
Number of Ethernet ports	2
Ethernet connection	RJ45

The Moxa NPort IA-5250 is an industrial device server that connects serial RS-232/422/485 devices to an Ethernet network. It enables the integration of legacy or specialized serial devices into modern network infrastructures, allowing remote control, monitoring, and diagnostics via IP-based protocols. The device features two serial ports and two Ethernet ports (10/100BaseT(X) via RJ45 connectors), which share a single IP address. The operating temperature ranges from 0 to 55 °C, enabling use in controlled industrial environments.

Applications

The NPort IA-5250 is suitable for applications in industrial automation, where serial devices such as PLCs, sensors, measuring instruments, motors, drives, barcode readers, or operator displays need to be integrated into an Ethernet network. The serial-to-Ethernet connectivity allows access to these devices via network software, enabling centralized and more efficient maintenance, configuration, and monitoring. The compact design and DIN rail mounting make the device suitable for use in enclosures and control systems.

Functions and Equipment in Detail

The device supports various operating modes for the serial ports, including TCP Server, TCP Client, and UDP. These modes enable flexible communication directions and protocols, depending on the requirements of the connected devices. The patented ADDC™ function (Automatic Data Direction Control) ensures automatic control of data direction for RS-485 connections, regardless of whether two-wire or four-wire connections are used. This reduces installation complexity and increases data transmission reliability. The cascading Ethernet ports allow for simple cabling, with RJ45 connectors used to connect to other network devices.

Technology Explained Simply

The two serial ports support RS-232, RS-422, and RS-485 standards, which are widely used in industrial communication. The Ethernet ports operate at 10/100BaseT(X) via RJ45 connectors, representing a standard connection in local networks. The use of a single IP address for both Ethernet ports simplifies network addressing. The redundant DC power supply via two connectors increases operational safety, as a second connection can maintain power in case of a power failure or cable interruption. Alarms can be sent via a relay output or by email, enabling quick response to fault conditions.

Compatibility and Accessories

The NPort IA-5250 is designed for connection with serial devices supporting the mentioned standards. The Ethernet ports are compatible with standard network devices using RJ45 connectors. The use of 100BaseFX optics (single-mode or multi-mode with SC connector) is also possible, although not part of the standard equipment. The devices are housed in an enclosure rated IP30, providing protection against solid foreign objects and splashing water to a limited extent. Mounting is done on a DIN rail, facilitating integration into existing enclosures.

Mounting and Installation

Installation is performed by mounting on a DIN rail inside the enclosure. The serial devices are connected via the corresponding RS-232/422/485 connectors, while the Ethernet connections are made using RJ45 cables to the network. Power supply is provided via the redundant DC connectors. Configuration is done via network protocols, with IP address and operating modes set using network software. The cascading function of the Ethernet ports enables simple cabling, especially in larger networks.

Operational Advantages

Integrating serial devices into an Ethernet network enables centralized control and monitoring, reducing maintenance time and increasing system availability. The ADDC™ function and redundant power supply enhance reliability. Alarm functions via relay output and email allow for quick response to disturbances. The compact design and DIN rail mounting simplify installation in existing systems. Support for multiple operating modes provides flexibility in communication with different devices.

Protection Rating

The device is housed in an enclosure rated IP30, providing protection against solid foreign objects and splashing water to a limited extent. The operating temperature ranges from 0 to 55 °C, enabling use in controlled industrial environments. Power supply is provided via redundant DC connectors, increasing operational safety. The Ethernet ports support 10/100BaseT(X) via RJ45 connectors, with a single IP address used for both ports. The serial ports support RS-232, RS-422, and RS-485, with the ADDC™ function automatically controlling data direction for RS-485. Alarms can be sent via relay output or email, enabling quick response to fault conditions. Mounting is done on a DIN rail, facilitating integration into enclosures. The cascading Ethernet ports enable simple cabling, especially in larger networks. The reliability and flexibility make the NPort IA-5250 a suitable solution for integrating serial devices into industrial networks.