General
Serial ports	16 RS-232/422/485

The NPort 6610-16 from Moxa is a Device-Server of the NPort 6600 series, specifically designed for connecting serial devices over Ethernet. The device features 16 serial ports supporting RS-232/422/485 interfaces, enabling integration of legacy devices into modern IP-based networks. The devices are designed for use in demanding industrial environments, particularly in energy, transport, and manufacturing industries, where high availability and data security are required.

Applications
The NPort 6610-16 is suitable for applications where serial devices such as sensors, controls, measuring instruments, or industrial peripherals need to be accessed over an Ethernet network. The integrated security according to IEC 62443 makes it particularly suitable for critical infrastructures, where data loss or unauthorized access must be avoided. Support for TLS and SSH encryption ensures secure communication over TCP/IP networks, protecting sensitive data.

Functions and Equipment in Detail
Each serial port is individually configurable, including setting resistors for RS-485 communication, enabling flexible adaptation to different bus topologies. Baud rates can be set between 50 bps and 921.6 kbps, including non-standard rates. An internal buffer memory of 64 KB per port ensures that all serial data is stored during a network outage and automatically transmitted once the connection is restored. Buffering can be extended via an optional SD card (up to 32 GB), enhancing data integrity during prolonged outages.

Technology Explained Simply
The Device-Server operates as a terminal server and acts as a bridge between serial devices and Ethernet networks. It supports various operating modes, including Real COM, TCP Server/Client, UDP, Pair Connection, Terminal, and Ethernet Modem. For secure communication, mode variants such as TLS/SSL Real COM, Secure TCP Server/Client, Reverse SSH, and SSH are available. The integrated real-time clock and watchdog timer enhance reliability by automatically restarting the device in case of system failures. An audible alarm signals error conditions.

Compatibility and Accessories
The NPort 6610-16 features an Ethernet port (1x 10/100BaseT(X)) and can optionally be expanded with NM modules to support RJ45 or fiber connections. The serial interfaces use 8-pin RJ45 connectors, enabling compact and robust cabling. The devices are designed for rack mounting, offering flexible installation options in server or network racks. Support for IPv4/IPv6, SNMP, HTTPS, SSH v2, SMTP, Telnet, TCP/IP, UDP, LLDP, and RIP v1/v2 ensures broad compatibility with existing network and management systems.

Mounting and Installation
The device is housed in a metal enclosure and designed for rack mounting. Installation is performed via the integrated LCD display, enabling direct configuration on the device. This is particularly advantageous during commissioning or on-site maintenance work. The devices are designed for use in environments with an operating temperature of 0 to 55 °C; special -T models are suitable for use at -40 to 75 °C.

Operational Advantages
The NPort 6610-16 offers high operational reliability through integrated security functions such as RADIUS, TACACS+, AES-128/256, and SHA-1/256/384. The MTBF is up to 850,000 hours, indicating high reliability and low maintenance frequency. Support for SD cards enables flexible data buffering, which can be critical during network outages. The combination of robust design, comprehensive security, and flexible configuration makes the device a reliable solution for industrial networking applications.

Certifications
The device complies with standards EN 55032/35, IEC 61000-4-2/3/4/5/6/8/11, UL 60950-1, and NEMA TS2 (transport). Additionally, it is RoHS, CRoHS, and WEEE compliant, ensuring environmental compatibility and proper disposal according to regulations.

Scope of Delivery
The listed components are specific to the model series and respective configuration. Items not mentioned are not included in the delivery scope.