General
Operating temperature	0~60 °C
Ethernet support	10/100M
Real COM/TTY driver

The Moxa NPort 5210A - DB9 male is a Device-Server for networking serial devices over a TCP/IP network. It enables access to RS-232 devices over Ethernet, allowing existing serial peripherals to be integrated into modern networks. The device is compactly dimensioned and designed for easy installation in industrial or office environments. It supports data transfer rates of 10/100 Mbit/s over Ethernet and is designed for operating voltages between 12 and 48 VDC. The operating temperature ranges from 0 to 60 °C, enabling use in indoor environments as well as in controlled outdoor areas.

Applications
The NPort 5210A is suitable for applications where serial devices such as measuring instruments, sensors, printers, or industrial controls need to be accessed over a network. It is particularly useful in environments where existing software relies on COM- or TTY-ports, but network integration is required. Integration is achieved without modifying existing software, as Real COM/TTY drivers enable seamless communication over TCP/IP.

Functions and Equipment in Detail
The device offers various operating modes: TCP-Server, TCP-Client, and UDP, ensuring compatibility with standard network APIs such as Winsock or BSD Sockets. The patented ADDC function (Automatic Data Direction Control) supports RS-485 connections with two and four wires and enables automatic control of data direction. This is particularly advantageous for bidirectional communication links. Additionally, an integrated 15 kV ESD protection is provided for all serial signals, protecting the device against electrostatic discharges and enhancing reliability in industrial environments.

Technology Explained Simply
The NPort 5210A acts as a bridge between serial devices and an Ethernet network. The serial device is connected via the DB9 male port, while the device itself is integrated into the network via Ethernet. Communication occurs over standard TCP/IP protocols, enabling data transmission to and from the serial device over the network. The use of Real COM/TTY drivers allows existing software that accesses COM-ports to continue operating unchanged, as the Device-Server appears as a virtual COM-port.

Compatibility and Accessories
The device is compatible with standard TCP/IP protocols and can be used in networks with Windows- or Linux-based systems. Configuration is performed via a Windows utility program, simplifying the setup of multiple device servers. For network management, SNMP MIB-II is integrated, enabling monitoring and control of the device via network management systems.

Mounting and Installation
Installation involves connecting the serial device to the DB9 male port and connecting the Device-Server to the network via Ethernet. Power supply is provided by an external voltage source in the range of 12 to 48 VDC. The compact design allows for flexible mounting, for example in enclosures or on walls. Configuration is performed via the Windows utility program, which enables setting of IP address, port number, and operating mode.

Operational Advantages
The use of the NPort 5210A enables flexible and scalable integration of serial devices into existing networks. The use of standard protocols and drivers reduces the complexity of system integration. The integrated ESD protection increases the device's robustness, and support for multiple operating modes provides flexibility in communication design. Network monitoring via SNMP MIB-II enables central management and diagnostics of the device.