General
Number of serial interfaces	4
Ethernet connection	RJ45
Air humidity	5–95 % r.F., nicht kondensierend
Data bits	5, 6, 7, 8
Stop bits	1, 1.5, 2
RS-485 termination resistor	120 Ω

The Moxa NPort 5450I-T is a Device-Server of the NPort 5400 series, specifically designed for integrating serial devices into an Ethernet network. It enables the connection of up to four serial end devices via RS-232, RS-422 and RS-485 interfaces, with each interface configurable independently. The devices are designed for industrial environments, with the -T model offering an extended operating temperature range of -40 to 75 °C, making it suitable for harsh operating conditions. An integrated LCD display supports local configuration and diagnostics, simplifying on-site maintenance. Power supply is provided through two redundant inputs – a DC terminal block and a hollow pin connector – increasing reliability in critical applications. The serial interfaces are implemented via DB9 connectors, with isolation specified at 2 kV to prevent disturbances and damage from electrical overvoltages.

Applications include networking industrial controls, measuring instruments, sensors, printers, or other serial peripheral devices in factories, power plants, transportation systems, or medical facilities (model-dependent). Support for TCP Server/Client, UDP, Real COM, Pair Connection, Reverse Telnet and Ethernet-Modem modes significantly expands application possibilities. For example, the device can appear as a virtual COM port on a PC or function as a network modem to control serial devices over the network.

Functions and features in detail include flexible configuration of serial parameters: data bits (5, 6, 7, 8), stop bits (1, 1.5, 2), parity (none, even, odd, Space, Mark), and flow control methods (RTS/CTS, DTR/DSR, XON/XOFF). Baud rates range from 50 bps to 921.6 kbps, enabling high data transfer performance. For RS-485 applications, adjustable termination resistors (120 Ω) and pull-up/down resistors (1 kΩ, 150 kΩ) are integrated to optimize signal quality in long bus structures. The Ethernet interface supports 10/100BaseT(X) and is equipped with 1.5 kV isolation to shield against electromagnetic interference.

Technology explained simply shows that the NPort 5450I-T acts as a bridge between analog serial devices and modern IP-based networks. Serial data is converted into IP packets and transmitted over the network. Isolation protects internal circuits from voltage spikes caused by electrical disturbances or overvoltages. Redundant power supply increases availability, as in the event of failure of one power source, the other continues to supply power. Security features include HTTPS, AES-128 encryption, RSA-1024 keys, SHA-1/256 hashing, SNMPv3, and local authentication to prevent unauthorized access.

Compatibility and accessories refer to use with serial devices supporting RS-232, RS-422, or RS-485. The devices are designed for use in networks with standard Ethernet infrastructure. The delivery includes the device itself, a power adapter cable (CBL-PJTB-10), a wall mounting kit, a Quick Installation Guide, and a warranty card. Installation is possible on the wall, on a DIN rail (optional), or on a desktop. The housing is made of metal, providing mechanical stability and EMC protection.

Installation and mounting is simple, involving fixation to the wall or a DIN rail. Serial devices are connected via DB9 connectors, and the Ethernet connection is made via an RJ45 port. Configuration can be performed locally via the LCD display or using network management software. Power supply is connected via the DC terminal block or the hollow pin connector, with both inputs capable of operating in parallel.

Operational advantages include high reliability, easy maintenance via the LCD display, flexibility of operating modes, and support for industrial environments with extreme temperatures. The MTBF is up to 1,213,993 hours (model-dependent), indicating high longevity and low failure probability. Certifications according to EN 55032/35, FCC, IEC 61000-4-x, and UL 62368-1 ensure EMC and safety compliance. Model-dependent, DNV and medical standards (EN 60601-1-2) are also met, enabling use in specialized industries.

The device is designed for use in industrial networks where stable, secure, and maintenance-friendly networking of serial devices is required. The combination of robust design, flexible configuration, and high security standards makes the NPort 5450I-T a suitable solution for demanding applications.