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Brand: MOXA
Moxa NPort 5110A 1-Port RS-232 Serial Device Server
Description
Putting an RS-232 device on the network in about 30 seconds
The Moxa NPort 5110A is a one-port RS-232 serial device server. It connects a PLC, meter, analyser, scale, barcode reader or other serial device to an Ethernet network, giving PC software direct access to the device through Real COM or TTY drivers, or letting host applications talk to it over TCP or UDP. A three-step web console guides the setup, with an average of 30 seconds quoted by Moxa. Power consumption is below 1 W, and surge protection is applied to the serial, Ethernet and power lines, tested to IEC 61000-4-5. The metal housing has mounting ears and a screw-type power connector for secure installation.
Technical specifications
| Parameter | Specification |
|---|---|
| Ethernet | 1 x 10/100BaseT(X) RJ45, 1.5 kV built-in magnetic isolation |
| Serial | 1 x RS-232, DB9 male (NPort 5110A); signals TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND |
| Baud rate / format | 50 bps to 921.6 kbps; data bits 5-8; stop bits 1, 1.5, 2; parity none, even, odd, space, mark |
| Flow control | RTS/CTS, DTR/DSR, XON/XOFF |
| Operation modes | Real COM, Reverse Telnet, RFC2217, TCP Server, TCP Client, UDP, Pair Connection, Ethernet Modem, Disabled; up to 8 TCP hosts |
| Drivers | Windows Real COM (Windows 11 down to older versions and Windows Server), Linux real TTY, fixed TTY for macOS, Android API 3.1.x and later |
| Management | Web console (HTTP/HTTPS), Windows utility, Device Search Utility, MCC Tool, Telnet, serial console, SNMPv1/v2c, DHCP, DNS, SMTP alerts |
| Security | Local authentication, HTTPS (TLS 1.2), AES-128, SHA-256, RSA-1024 |
| Power | 12 to 48 VDC via power input jack; 82.5 mA at 12 VDC; watchdog timer |
| Housing | Metal; 75.2 x 80 x 22 mm with ears, 52 x 80 x 22 mm without; 340 g |
| Installation | Desktop, wall mount or DIN rail with optional kit |
| Operating temperature | NPort 5110A: 0 to 60 deg C; NPort 5110A-T: -40 to 75 deg C |
| Approvals / MTBF | UL 60950-1, EN 55032/35, FCC Part 15B Class A, RoHS, CRoHS, WEEE / 2,231,530 hrs, 5-year warranty |
NPort 5100A family
| Model | Serial standard | Input current | Operating temperature |
|---|---|---|---|
| NPort 5110A / 5110A-T | RS-232 | 82.5 mA at 12 VDC | 0 to 60 / -40 to 75 deg C |
| NPort 5130A / 5130A-T | RS-422/485 | 89.1 mA at 12 VDC | 0 to 60 / -40 to 75 deg C |
| NPort 5150A / 5150A-T | RS-232/422/485 (software selectable) | 92.4 mA at 12 VDC | 0 to 60 / -40 to 75 deg C |
Selection and commissioning
Choose the 5110A only if the field device is strictly RS-232; for an RS-485 multidrop bus pick the 5130A or the combined 5150A. Wide-temperature models are the right choice for outdoor cabinets and unconditioned shelters. In Real COM mode, the host sees a normal COM port, so existing SCADA or configuration software can be used unchanged; install the driver and map the port. Always set a fixed IP address and restrict access with the web console security features. The standard-temperature models include a power adapter. Seven Star LLC, an independent supplier in Muscat, quotes the exact model; confirm serial standard, temperature range and power adapter region before ordering. The Moxa datasheet (version 2.0) is attached, and related products are in Industrial Communications. For a two-port unit, see the NPort 5210A. The NPort 5100A can be set to send SNMP traps or email alerts on events such as a warm start, cold start or password change, and it supports COM port grouping and UDP multicast. Moxa states that the MiiNe system-on-chip design halves power consumption compared with other solutions. Drivers are listed for current Windows, Linux and macOS versions, including Arm-based platforms.
Datasheets & Documents
- Datasheet Moxa NPort 5100A series datasheet v2.0 Download
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About brand
Since 1987 Moxa, based in New Taipei City, Taiwan, has built networking hardware for places where an office switch would fail: substations, wellhead panels, roadside cabinets. Seven Star LLC lists Moxa industrial Ethernet switches and fiber converters and supplies Moxa networking devices to system integrators and plant teams in Oman as an independent supplier. Each request is checked against the full Moxa model name before we quote.
Moxa switches and converters listed here
The EDS-G508E is a managed switch with eight Gigabit ports from the EDS managed line. The EDS-316-MM-SC-T is a 16-port unmanaged switch with 14 copper ports, two multi-mode SC fiber ports and the wide-temperature option (-40 to 75 C). The TCF-142-S-SC-T belongs to the TCF-142 series, which converts RS-232/422/485 serial signals to single-mode fiber. Moxa also makes serial device servers, protocol gateways, wireless devices and industrial computers, used on SCADA and telemetry networks across the GCC.
Ordering Moxa devices: what we need
The suffixes carry the specification. Send the complete model name, including fiber mode and connector (MM-SC, SS-SC, ST), the -T wide-temperature suffix and any coating or approval suffix. Add the power supply voltage, the SFP modules needed and the quantity.
Browse MOXA products by category: Industrial Communications.
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Frequently Asked Questions
It makes a single RS-232 serial device accessible over Ethernet using Real COM, TTY, TCP or UDP modes.
Moxa states less than 1 W; input current is 82.5 mA at 12 VDC.
Yes, on serial, Ethernet and power lines, tested to IEC 61000-4-5.
Windows, Linux (real TTY), macOS (fixed TTY) and others listed in the datasheet.
Yes, the NPort 5110A-T operates from -40 to 75 deg C.

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