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Brand: MOXA
Moxa MGate 5103 1-Port Modbus/EtherNet/IP to PROFINET Gateway
Description
What the MGate 5103 converts between
MGate 5103 is listed by Moxa as: 1-port Modbus/EtherNet/IP-to-PROFINET gateway, 0 to 60°C operating temperature. A protocol gateway that lets a PROFINET controller exchange data with Modbus RTU/ASCII/TCP and EtherNet/IP devices through a single DIN-rail unit.
Key figures from the Moxa page: the power input is 12 to 48 VDC; operating temperature is 0 to 60°C (32 to 140°F); dimensions are 36 x 105 x 140 mm (1.42 x 4.14 x 5.51 in); weight is 507 g (1.12 lb); the enclosure is rated IP30.
Standards and approvals printed for this model include hazardous-location listings of ATEX; Class I Division 2; IECEx; safety standard EN 62368-1; UL 508. Approvals can differ between variants of a series, so check the one on the exact order code.
Technical specifications
| Parameter | Specification |
|---|---|
| Magnetic Isolation Protection | 1.5 kV (built-in) |
| Time Management | NTP Client |
| Authentication | Local database |
| No. of Ports | 1 |
| Connector | DB9 male |
| Serial Standards | RS-232/422/485 |
| Baudrate | 50 bps to 921.6 kbps |
| Data Bits | 7, 8 |
| Stop Bits | 1, 2 |
| Terminator for RS-485 | 120 ohms |
| Isolation | 2 kV (built-in) |
| RS-422 | Tx+, Tx-, Rx+, Rx-, GND |
| RS-485-2w | Data+, Data-, GND |
| RS-485-4w | Tx+, Tx-, Rx+, Rx-, GND |
| Modbus RTU/ASCII: Mode | Master, Slave |
| Modbus RTU/ASCII: Max. No. of Commands | 128 |
| Modbus RTU/ASCII: Input Data Size | 512 bytes |
| Modbus RTU/ASCII: Output Data Size | 512 bytes |
| Max. No. of Client Connections | 16 |
| Max. No. of Server Connections | 32 |
| Modbus TCP: Max. No. of Commands | 128 |
| Modbus TCP: Input Data Size | 512 bytes |
| Modbus TCP: Output Data Size | 512 bytes |
| PROFINET: Mode | IO Device |
| Max. No. of IO Controller Connections | 1 (for read/write) |
| PROFINET: Input Data Size | 512 bytes |
| PROFINET: Output Data Size | 512 bytes |
| EtherNet/IP: Mode | Adapter |
| EtherNet/IP: Input Data Size | 496 bytes |
| EtherNet/IP: Output Data Size | 496 bytes |
| Input Voltage | 12 to 48 VDC |
| Input Current | 455 mA @ 12 VDC |
| Housing | Metal |
| IP Rating | IP30 |
| Weight | 507 g (1.12 lb) |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Ambient Relative Humidity | 5 to 95% (non-condensing) |
| EMC | EN 55032/35 |
| Safety | EN 62368-1; UL 508 |
| Hazardous Locations | ATEX; Class I Division 2; IECEx |
| Freefall | IEC 60068-2-32 |
| Shock | IEC 60068-2-27 |
| Vibration | IEC 60068-2-6; IEC 60068-2-64 |
| Warranty Period | 5 years |
Selection and installation notes
Typical use is attaching Modbus or EtherNet/IP instruments to a Siemens PROFINET PLC without changing the instrument,.
On the practical side, the housing is metal; the stated MTBF is 859,422 hrs; the warranty period is 5 years. Treat the MTBF as a manufacturer prediction under its stated method, not a guarantee for your site.
What to confirm before ordering: which side acts as master or slave in your setup and the temperature grade. Our team in Muscat works from the exact code on your enquiry, as an independent supplier.
Sizing the data exchange is the main selection step. The datasheet limits the unit to 512 bytes of input and 512 bytes of output on the PROFINET IO device side and 496 bytes each way on EtherNet/IP, with up to 128 commands per Modbus mode. One PROFINET IO controller connection (read/write) is supported, so a single PLC owns the gateway, while Modbus TCP allows up to 16 client and 32 server connections. Add up the registers and tags you plan to map before choosing this model, and consider a second gateway when a large instrument population exceeds those limits.
Documents and quotation
The Moxa datasheet for this family (moxa-mgate-5103-series-datasheet-v1.4) is attached to this page. Request a quotation with the exact order code, quantity and delivery location, and we will respond with availability.
More products in this range: Industrial Communications.
Datasheets & Documents
- Datasheet Moxa MGate 5103 series datasheet v1.4 Download
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About brand
Moxa is the Taiwanese maker of industrial networking equipment: Ethernet switches, serial device servers, protocol gateways, media converters, secure routers and remote I/O. It was founded in Taiwan in 1987 and started with serial communication products before moving into industrial Ethernet. It is headquartered in Taipei.
Seven Star LLC is an independent supplier in Muscat. We list Moxa switches, serial servers, gateways and converters, and supply them to control system integrators, utilities, oil and gas and building automation projects in Oman and the GCC by exact model.
Moxa at a glance
| Established | 1987, Taiwan |
|---|---|
| Headquarters | Taipei, Taiwan |
| First products | Serial communication boards and serial connectivity |
| Product families | Unmanaged, managed and rackmount industrial Ethernet switches, serial device servers, Modbus and fieldbus gateways, media converters, serial converters, secure routers, remote I/O and industrial computers |
Moxa products we list
| Family | Models | Typical use |
|---|---|---|
| Unmanaged switches | EDS-205A, EDS-208A, EDS-2008-EL, EDS-2010-ML, EDS-308, EDS-316, EDS-G2005-EL, EDS-G205, EDS-G308, EDS-P206A PoE | Simple plug-and-play networks inside control panels |
| Managed switches | EDS-405A, EDS-408A, EDS-508A, EDS-510A, EDS-510E, EDS-518A, EDS-528E, EDS-G508E, EDS-G509, EDS-G512E, ICS-G7528A rackmount | Redundant ring networks, VLANs and diagnostics for SCADA and DCS |
| Serial device servers | NPort 5110A, 5150A, 5210A, 5250A, 5410, 5450, 5610-8, 5650-8, 6150, IA5150A | Putting RS-232/422/485 devices on an Ethernet network |
| Protocol gateways | MGate MB3180, MB3170, MB3280, MB3270, 5101-PBM-MN, 5105-MB-EIP, 5109 DNP3, 5114 IEC 104 | Linking Modbus RTU/TCP, PROFIBUS, EtherNet/IP, DNP3 and IEC 60870-5-104 systems |
| Converters, routers and I/O | IMC-21A, IMC-101, IMC-21GA, TCF-142, TCC-100, TCC-80, TCC-120, EDR-G9010 router, ioLogik E2210 | Fibre links over long distances, serial conversion, network security and remote I/O |
The choice between switch types follows the network. An unmanaged switch simply forwards traffic and suits a small, isolated panel. A managed switch adds redundancy protocols (Moxa's Turbo Ring recovers a broken ring in milliseconds), VLANs to separate traffic, port mirroring and alarms, which a SCADA or DCS network needs. The suffix on a Moxa model also matters: "-T" means a wide operating temperature range (typically -40 to 75 °C), which is the safe choice for outdoor cabinets in the Gulf summer. "-MM-SC" or "-S-SC" means multi-mode or single-mode fibre with SC connectors.
Where Moxa products are used
In Oman and the GCC, Moxa equipment connects RTUs, PLCs, meters and protection relays in oil and gas fields, electrical substations, water and wastewater SCADA, transport, and building and energy management systems.
Ordering Moxa products: what we need
Send the complete model including all suffixes (for example EDS-508A-MM-SC-T), the quantity, and for fibre models the fibre type and distance. For gateways, tell us which two protocols need to be linked.
Facts checked against Moxa company information, October 2026.
Browse MOXA products by category: Industrial Communications.
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Frequently Asked Questions
What is the Moxa MGate 5103?
Moxa lists it as: 1-port Modbus/EtherNet/IP-to-PROFINET gateway, 0 to 60°C operating temperature. A protocol gateway that lets a PROFINET controller exchange data with Modbus RTU/ASCII/TCP and EtherNet/IP devices through a single DIN-rail unit.
What power supply does the MGate 5103 need?
The Moxa specification gives an input voltage of 12 to 48 VDC. Check the terminal arrangement and, where relevant, the redundant-input wiring against your panel supply before ordering.
What operating temperature range applies to the MGate 5103?
The listed operating temperature is 0 to 60°C (32 to 140°F). Wide-temperature versions carry a -T suffix in Moxa's order codes where the series offers them, and they are separate order codes.
Which protocols does the MGate 5103 convert?
Per Moxa's description, it is a 1-port Modbus/EtherNet/IP-to-PROFINET gateway. Industrial protocols listed on the Ethernet side: PROFINET IO Device; Modbus TCP Client (Master); Modbus TCP Server (Slave); EtherNet/IP Adapter.
Where is the MGate 5103 datasheet and how do I ask for a quotation?
You can download the Moxa datasheet from this page. For a quotation, send us the full order code, quantity and destination; Seven Star LLC is an independent supplier based in Muscat.
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