General
Number of serial ports	16 Stück
Data bits	5, 6, 7, 8 -
Stop bits	1, 1.5, 2 -
MTBF	439.673 Stunden
Air humidity	5–95 % (nicht kondensierend)

The Moxa NPort 6650-16-48V is a 16-port terminal server that integrates serial RS-232/422/485 devices into modern Ethernet networks. The device serves as a bridge between legacy serial devices and IP-based infrastructures, particularly in industrial and telecommunication environments where secure and reliable communication is required. With a robust metal housing and rack-mount capability, it is designed for use in server rooms or industrial control environments. An integrated LCD display and control buttons enable direct local configuration and status monitoring on the device.

Applications

The terminal server is suitable for applications where serial devices such as sensors, controls, printers, or industrial machines must be accessed over Ethernet. Typical use cases include industrial automation, telecommunication networks, building automation, or remote maintenance systems. Support for protocols such as SNMPv3, HTTPS, and SSH makes it especially suitable for security-critical environments. Expandability via NM modules also allows flexible adaptation to different network connections, such as RJ45 or fiber optic.

Functions and Equipment in Detail

The device features 16 serial ports, each via an 8-pin RJ45 connector, supporting RS-232, RS-422, and RS-485. Configuration is possible via various interfaces: web interface (HTTP/HTTPS), Windows utility, DSU, MCC Tool, serial, Telnet, or SSH. The serial interfaces offer high flexibility with baud rates from 50 bps to 921.6 kbps, data bits 5–8, stop bits 1, 1.5, or 2, parity types (none, even, odd, space, mark), and flow control options such as RTS/CTS, DTR/DSR, and XON/XOFF. For RS-485, integrated pull-up/pull-down resistors (1 kΩ / 150 kΩ) and a 120 Ω terminator are available. Data direction control is automatic (ADDC). A console port (RS-232, 8-pin RJ45, 19200, n, 8, 1) is provided for local administration.

Technology Explained Simply

The NPort 6650-16-48V operates with an Ethernet interface (10/100BaseT(X), RJ45, Auto MDI/MDI-X) and offers integrated magnetic isolation of 1.5 kV, reducing interference and overvoltage in the network. Power supply is via ±48 VDC, with an operating voltage range of 20–72 VDC or -20 to -72 VDC, providing high flexibility for power supply in industrial installations. An SD card slot (up to 32 GB, SD 2.0 compatible) allows storage of configurations or logs. The integrated real-time clock (RTC) and a buzzer serve as alarm functions. A watchdog timer ensures system stability.

Compatibility and Accessories

Software and driver support includes a wide range of operating systems: Windows (95 to 11, Server 2003 to 2022, CE, XP Embedded), Linux (Kernel 2.4.x to 6.x), macOS (10.12 to 11.x), as well as other systems such as SCO UNIX, QNX, Solaris, FreeBSD, AIX, HP-UX, Mac OS X, ARM platforms (Kernel 4.x/5.x), and VM systems such as VMware ESXi, Fusion, Parallels. Android support starts from API Level 3.1.x. Network protocols include IPv4/IPv6, TCP/IP, UDP, ARP, ICMP, DHCP, DNS, SNMPv1/v2c/v3, LLDP, PPPOE, SMTP, SNTP, RIPV1/V2, and static routes. MIB-II support enables standard network management.

Mounting and Installation

The device is delivered in a robust metal housing designed for rack mounting. Dimensions are 480 × 195 × 44 mm (with bracket) or 440 × 195 × 44 mm (without bracket). Weight is 3.580 g. Installation is done via the provided mounting brackets in the rack. Configuration can be performed locally via the LCD display and buttons or via network tools. Power supply is via the ±48 VDC connector.

Operational Advantages

The terminal server offers high reliability with an MTBF of 439,673 hours according to Telcordia standard. Security features include authentication via local database, RADIUS, or TACACS+, encryption with AES-128/256, HMAC, RSA-1024, SHA-1/256/384, and protocols such as HTTPS (TLS 1.2), SNMPv3, and SSHv2. Operating temperature is between 0 and 55 °C, storage temperature between -40 and 75 °C. Humidity is 5–95 % (non-condensing). Certifications include EMC (EN 55032/35), EMI (CISPR 32, FCC Part 15B Class A), EMS (IEC 61000-4-2/-3/-4/-5/-6/-8), safety (UL 60950-1), traffic control (NEMA TS2), and mechanical stress (Vibration IEC 60068-2-6, Drop IEC 60068-2-34). Environmental declarations include RoHS, CRoHS, and WEEE. Warranty is 5 years.

Security Features

Integrated security features include authentication via local database, RADIUS, or TACACS+, encryption with AES-128/256, HMAC, RSA-1024, SHA-1/256/384, and protocols such as HTTPS (TLS 1.2), SNMPv3, and SSHv2. Additional secure operating modes such as Reverse SSH, Secure Pair Connection, Secure Real COM, Secure TCP Client/Server, and SSH are available. These functions protect serial communication channels from unauthorized access and data manipulation.

Reliability and Operating Environment

The device is designed for use in industrial environments. Operating temperature is between 0 and 55 °C, storage temperature between -40 and 75 °C. Humidity is 5–95 % (non-condensing). MTBF is 439,673 hours according to Telcordia standard. An integrated watchdog timer and alarm functions (buzzer, RTC) enhance system stability. Certifications include EMC, EMI, EMS, safety, traffic control, and mechanical stress. Environmental declarations include RoHS, CRoHS, and WEEE. Warranty is 5 years.

Expansion Options

Compatibility with NM modules (NM series) allows flexible expansion of the network connection, for example via additional RJ45 or fiber optic connections. This enables adaptation to different network architectures without replacing the main device.

Network Protocols and Configuration

Network protocols include IPv4/IPv6, TCP/IP, UDP, ARP, ICMP, DHCP, DNS, SNMPv1/v2c/v3, LLDP, PPPOE, SMTP, SNTP, RIPV1/V2, and static routes. Configuration is done via web interface (HTTP/HTTPS), Windows utility, DSU, MCC Tool, serial, Telnet, or SSH. MIB-II support enables standard network management.

Power Supply and Operation

Power supply is via ±48 VDC, with an operating voltage range of 20–72 VDC or -20 to -72 VDC. Input current is 293 mA at 48 VDC. Integrated magnetic isolation of 1.5 kV protects against interference. An SD card slot (up to 32 GB, SD 2.0 compatible) allows storage of configurations or logs. The integrated real-time clock (RTC) and a buzzer serve as alarm functions. A watchdog timer ensures system stability.

Mechanical Properties

The device has a robust metal housing designed for rack mounting. Dimensions are 480 × 195 × 44 mm (with bracket) or 440 × 195 × 44 mm (without bracket). Weight is 3.580 g. The user interface consists of an LCD display and control buttons.

Certifications and Environment

Certifications include EMC (EN 55032/35), EMI (CISPR 32, FCC Part 15B Class A), EMS (IEC 61000-4-2/-3/-4/-5/-6/-8), safety (UL 60950-1), traffic control (NEMA TS2), and mechanical stress (Vibration IEC 60068-2-6, Drop IEC 60068-2-34). Environmental declarations include RoHS, CRoHS, and WEEE. Warranty is 5 years.

Operating Environment

Operating temperature is between 0 and 55 °C, storage temperature between -40 and 75 °C. Humidity is 5–95 % (non-condensing). MTBF is 439,673 hours according to Telcordia standard. An integrated watchdog timer and alarm functions (buzzer, RTC) enhance system stability.

Security Features

Integrated security features include authentication via local database, RADIUS, or TACACS+, encryption with AES-128/256, HMAC, RSA-1024, SHA-1/256/384, and protocols such as HTTPS (TLS 1.2), SNMPv3, and SSHv2. Additional secure operating modes such as Reverse SSH, Secure Pair Connection, Secure Real COM, Secure TCP Client/Server, and SSH are available. These functions protect serial communication channels from unauthorized access and data manipulation.

Expansion Options

Compatibility with NM modules (NM series) allows flexible expansion of the network connection, for example via additional RJ45 or fiber optic connections. This enables adaptation to different network architectures without replacing the main device.

Network Protocols and Configuration

Network protocols include IPv4/IPv6, TCP/IP, UDP, ARP, ICMP, DHCP, DNS, SNMPv1/v2c/v3, LLDP, PPPOE, SMTP, SNTP, RIPV1/V2, and static routes. Configuration is done via web interface (HTTP/HTTPS), Windows utility, DSU, MCC Tool, serial, Telnet, or SSH. MIB-II support enables standard network management.

Power Supply and Operation

Power supply is via ±48 VDC, with an operating voltage range of 20–72 VDC or -20 to -72 VDC. Input current is 293 mA at 48 VDC. Integrated magnetic isolation of 1.5 kV protects against interference. An SD card slot (up to 32 GB, SD 2.0 compatible) allows storage of configurations or logs. The integrated real-time clock (RTC) and a buzzer serve as alarm functions. A watchdog timer ensures system stability.

Mechanical Properties

The device has a robust metal housing designed for rack mounting. Dimensions are 480 × 195 × 44 mm (with bracket) or 440 × 195 × 44 mm (without bracket). Weight is 3.580 g. The user interface consists of an LCD display and control buttons.

Certifications and Environment

Certifications include EMC (EN 55032/35), EMI (CISPR 32, FCC Part 15B Class A), EMS (IEC 61000-4-2/-3/-4/-5/-6/-8), safety (UL 60950-1), traffic control (NEMA TS2), and mechanical stress (Vibration IEC 60068-2-6, Drop IEC 60068-2-34). Environmental declarations include RoHS, CRoHS, and WEEE. Warranty is 5 years.

Operating Environment

Operating temperature is between 0 and 55 °C, storage temperature between -40 and 75 °C. Humidity is 5–95 % (non-condensing). MTBF is 439,673 hours according to Telcordia standard. An integrated watchdog timer and alarm functions (buzzer, RTC) enhance system stability.