General
Number of serial ports	2
Data bits	5, 6, 7, 8
Stop bits	1, 1.5, 2
SNMP support	v1, v2c, v3
Power consumption	360 mA
Air humidity	5–95 %, nicht kondensierend
MTBF (at 25 °C)	639.622 Std

The Moxa NPort 5250AI-M12-T is a serial device server from the NPort 5000AI-M12 series, specifically designed for use in rail and industrial applications. It enables network integration of serial devices by connecting RS-232/422/485 interfaces over Ethernet. The device features two serial ports with DB9 connectors, allowing communication with legacy devices in industrial environments. Its robust design with M12 connection technology and IP40 metal housing ensures reliable operation under harsh operating conditions. Compliance with EN 50155 and EN 50121-4 makes the device suitable for use in rolling stock and the railway industry, covering standards for shock, vibration, temperature, voltage, and ESD.

Applications include integrating industrial sensors, controls, printers, or other serial end devices into existing networks. The devices are ideal for applications in manufacturing automation, rail transport, power supply, and other environments with high requirements for reliability and environmental resistance. The 3-step web configuration allows commissioning within 30 seconds, making setup easy even for users with limited technical expertise.

Functions and features in detail include support for COM port grouping, UDP multicast, and SNMP monitoring. The devices are equipped with modern encryption protocols, including HTTPS (TLS 1.2), AES-128, RSA-1024, SHA-1, and SHA-256, to secure data transmission. Authentication is performed via a local database, and SNMPv3 is supported, facilitating network monitoring and management. The serial interfaces support baud rates from 50 to 921.6 kbps, data bits 5 to 8, stop bits 1, 1.5, or 2, and parities None, Even, Odd, Space, and Mark. Flow control is supported via RTS/CTS, DTR/DSR, and XON/XOFF, and isolation is rated at 2 kV. RS-485 control is performed automatically via ADDC.

Technology explained simply shows that the device features an Ethernet port with 10/100BaseT(X) and M12 D-coded (4-pin, female) connection. Network protocols include TCP/IP, UDP, HTTP/HTTPS, SNMPv1/v2c, Telnet, DHCP, BOOTP, DNS, ARP, and LLDP. Power supply is via 12–48 VDC, delivered through an M12 A-coded (5-pin, male) connector. The devices are compliant with operating voltages of 24 VDC and 48 VDC according to EN 50155. The operating temperature range for the NPort 5250AI-M12-T model is -40 to 75 °C, making it suitable for extreme environments. Humidity is 5–95 %, non-condensing. Dimensions are 80 × 216.6 × 52.9 mm, and weight is 686 g.

Compatibility and accessories include support for Real COM drivers for Windows (95–11), Windows Server (up to 2022), and Embedded CE, as well as TTY drivers for Linux (kernel 2.x–5.x), UNIX, macOS, and Android. The devices are equipped with an integrated watchdog timer (WDT), an integrated buzzer, and an RTC (Real-Time Clock). Optional Conformal Coating is available for models ending in “-CT”. Mounting is done via DIN rail or wall mounting.

Mounting and installation is simple, achieved by securing to a DIN rail or wall. Configuration is performed via a web interface accessible over HTTP/HTTPS. The included quick start guide supports setup. Power supply is via the M12 A-coded connector, requiring voltage between 12 and 48 VDC.

Operational advantages include high reliability, easy commissioning, and support for multiple operating systems. The MTBF (Mean Time Between Failures) at 25 °C is 639,622 hours. The devices are designed for use in harsh environments and meet the requirements of the railway industry. Integrated security through encryption and authentication protects data transmission. SNMP support enables centralized network monitoring.

Scope of delivery includes the device NPort 5250AI-M12-T, a quick start guide, and a warranty card.