General
Data bits	5, 6, 7, 8 -
Auto MDI/MDI-X	ja -
Insulation	1,5 kV magnetisch
DIO channels	4 softwarekonfigurierbar
Operating temperature	0–55 °C
Wide-temp operating temperature	-40–75 °C
Storage temperature	-40–60 °C
Air humidity	5–95 % (nicht kondensierend)

The Moxa NE-4120S is a compact embedded device server, specifically developed for integrating serial devices into networks. It enables the connection of serial interfaces such as RS-232 with Ethernet networks, allowing legacy devices to be integrated into modern IT infrastructures. The module is particularly suitable for space-critical OEM applications, as it measures 57 × 40 mm, approximately half the size of a credit card. It features a pin header module form factor, which can be directly integrated into existing systems. Power supply is via 5 VDC, with a current consumption of 290 mA, resulting in a low power requirement of 1.5 W overall.

Applications

The NE-4120S is suitable for industrial applications where serial devices such as sensors, controls, or measuring instruments need to be accessible over a network. Typical use cases include integration into machine controls, building automation, or systems based on legacy technology that require network access. Its small form factor and low power consumption make the module especially suitable for embedded systems and installations with limited space.

Functions and Equipment in Detail

The device supports various operating modes, including Real COM, TCP Server, TCP Client, and UDP, enabling flexible use in different network environments. The serial interface supports the RS-232 standard and offers a baud rate from 110 bps to 230.4 kbps. Configuration of data bits (5, 6, 7, 8), parity (none, even, odd, Space, Mark), and stop bits (1, 1.5, 2) is done via software. Additionally, the module supports various flow control methods such as RTS/CTS, DTR/DSR, and XON/XOFF to prevent data loss.

Technology Explained Simply

The NE-4120S is based on a 16-bit microcontroller and features 2 MB Flash memory and 1 MB SDRAM, sufficient to process necessary operating system functions and network protocols. The network interface operates at 10/100 Mbps Ethernet and supports Auto MDI/MDI-X, allowing flexible cabling. Magnetic isolation of 1.5 kV protects the device from electrical interference and enables secure communication in industrial environments. The integrated DIO channels (4 pieces, software-configurable) allow additional digital inputs and outputs for control tasks.

Compatibility and Accessories

The device is compatible with a wide range of operating systems, including Windows (95 to 10, Server 2000–2019), Linux (2.4–5.x), macOS, Unix, and Android (from version 3.1). Network protocols include DHCP, BOOTP, Static IP, ARP, ICMP, SNMP v1/v2c, and SMTP. Configuration is performed via Web Console, Telnet, Serial Console, or a Windows utility software. Support for SNMP Traps and email alerts for system events enables proactive monitoring of the device.

Mounting and Installation

The module is supplied as a pin header module and can be directly integrated into existing systems. Installation requires no additional tools or components, as the module is directly connected to the appropriate connectors.

Operational Advantages

The NE-4120S is characterised by high reliability, evidenced by an MTBF of up to 290,276 hours (according to Telcordia SR332). Certifications according to CISPR 32, FCC Part 15B Class A, IEC 61000-4-2/-3/-4/-5/-6/-8, IEC 60068-2-1/-3/-14 ensure high electromagnetic compatibility and environmental resistance. The operating temperature ranges from 0 to 55 °C (standard version), with a wide-temperature version capable of operation up to 75 °C. Humidity is 5–95 %, non-condensing. The warranty is 5 years, underscoring the high quality of the product.

Certifications and Environmental Standards

The device meets the requirements of RoHS, CRoHS, and WEEE directives, ensuring environmental compatibility and safe disposal. Compliance with the mentioned standards ensures safe and reliable use in industrial applications.

Scope of Delivery

The scope of delivery includes 1 × NE-4100 Series Embedded Device Server.

Operating System Support

Software support includes Windows (95 to 10, Server 2000–2019), Linux (2.4–5.x), macOS, Unix, and Android (from 3.1). Configuration is performed via Web Console, Telnet, Serial Console, or a Windows utility software.

Network Functions

The network interface supports 10/100 Mbps Ethernet with Auto MDI/MDI-X. Protocols supported include DHCP, BOOTP, Static IP, ARP, ICMP, SNMP v1/v2c, and SMTP. Configuration is performed via Web Console, Telnet, Serial Console, or a Windows utility software.

Serial Interface

The serial interface supports the RS-232 standard with a baud rate from 110 bps to 230.4 kbps. Data bits (5, 6, 7, 8), parity (none, even, odd, Space, Mark), and stop bits (1, 1.5, 2) are software-configurable. Flow control methods RTS/CTS, DTR/DSR, and XON/XOFF are also supported.

System Platform

The NE-4120S is based on a 16-bit microcontroller with 2 MB Flash memory and 1 MB SDRAM. The integrated DIO channels (4 pieces, software-configurable) enable additional digital inputs and outputs.

Environmental Conditions

The operating temperature is 0–55 °C (standard), with a wide-temperature version capable of operation up to 75 °C. Storage temperature ranges from -40 to 60 °C. Humidity is 5–95 %, non-condensing.

Certifications

The device meets the requirements of CISPR 32, FCC Part 15B Class A, IEC 61000-4-2/-3/-4/-5/-6/-8, IEC 60068-2-1/-3/-14, RoHS, CRoHS, and WEEE.

Warranty

The warranty is 5 years.

MTBF

The MTBF is up to 290,276 hours (according to Telcordia SR332).