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Brand: MOXA
Moxa MGate MB3270 2-Port Advanced Modbus TCP Gateway
Description
What the MGate MB3270 converts between
Moxa describes the MGate MB3270 as 2-port advanced Modbus gateway, 0 to 60°C operating temperature. A two-port gateway that converts between Modbus RTU/ASCII on serial lines and Modbus TCP on Ethernet, with enough capacity to handle many simultaneous TCP masters.
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 29 x 89.2 x 124.5 mm (1.14 x 3.51 x 4.90 in); weight is 380 g (0.84 lb); the enclosure is rated IP30.
Standards and approvals printed for this model include hazardous-location listings of ATEX; Class I Division 2; IECEx; marine approvals (DNV); safety standard UL 60950-1; IEC 60950-1; 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 |
| Encryption | HTTPS; AES-128; AES-256; SHA-256 |
| Security Protocols | SNMPv3; HTTPS (TLS 1.2) |
| No. of Ports | 2 |
| Connector | 2 x DB9 male |
| Serial Standards | RS-232/422/485 (software selectable) |
| Baudrate | 50 bps to 921.6 kbps |
| Data Bits | 7, 8 |
| Parity | None; Even; Odd; Space; Mark |
| Stop Bits | 1, 2 |
| Flow Control | DTR/DSR; RTS Toggle (RS-232 only); RTS/CTS |
| Pull High/Low Resistor for RS-485 | 1 kilo-ohm, 150 kilo-ohms |
| Terminator for RS-485 | 120 ohms |
| RS-485 Data Direction Control | ADDC (automatic data direction control) |
| RS-232 | TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND |
| RS-422 | Tx+, Tx-, Rx+, Rx-, GND |
| RS-485-2w | Data+, Data-, GND |
| RS-485-4w | Tx+, Tx-, Rx+, Rx-, GND |
| Serial Software Features: Industrial Protocols | Modbus RTU/ASCII Master; Modbus RTU/ASCII Slave |
| Max. No. of Client Connections | 32 |
| Max. No. of Server Connections | 32 |
| Input Voltage | 12 to 48 VDC |
| Input Current | 435 mA @ 12 VDC |
| Power Connector | 7-pin terminal block |
| Contact Current Rating | Resistive load: 1 A @ 30 VDC |
| Housing | Plastic |
| IP Rating | IP30 |
| Dimensions (with ears) | 29 x 89.2 x 124.5 mm (1.14 x 3.51 x 4.90 in) |
| Dimensions (without ears) | 29 x 89.2 x 118.5 mm (1.14 x 3.51 x 4.67 in) |
| Weight | 380 g (0.84 lb) |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Storage Temperature (package included) | -40 to 85°C (-40 to 185°F) |
| Ambient Relative Humidity | 5 to 95% (non-condensing) |
| EMC | EN 55032/35 |
| EMI | CISPR 32, FCC Part 15B Class A |
| Hazardous Locations | ATEX; Class I Division 2; IECEx |
| Maritime | DNV |
| Freefall | IEC 60068-2-32 |
| Shock | IEC 60068-2-27 |
| Vibration | IEC 60068-2-6; IEC 60068-2-64 |
| Safety | UL 60950-1; IEC 60950-1; EN 62368-1; UL 508 |
| Warranty Period | 5 years |
Where it fits and what to check
It is used to bring Modbus serial instruments, such as meters and PLCs, onto a plant network or SCADA system, with routing and priority handling for multi-master installations.
On the practical side, the housing is plastic; the stated MTBF is 1,477,768 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: the serial interface requirement (RS-232/422/485), the G2 models that appear in the series list, and the temperature grade. Our team in Muscat works from the exact code on your enquiry, as an independent supplier.
Related models in the MGate MB3270 family
Moxa groups the MGate MB3270 with 17 related order codes under one family: MGate MB3170, MGate MB3170-M-SC, MGate MB3170-M-SC-T, MGate MB3170-M-ST, MGate MB3170-M-ST-T, MGate MB3170-S-SC, MGate MB3170-S-SC-T, MGate MB3170-T, MGate MB3170I, MGate MB3170I-M-SC, MGate MB3170I-M-SC-T, MGate MB3170I-S-SC, MGate MB3170I-S-SC-T, MGate MB3170I-T, MGate MB3270, MGate MB3270-T, MGate MB3270I, MGate MB3270I-T. Suffixes such as -T generally mark wide-temperature versions and fiber suffixes (M, S, MM, SS with SC or ST) mark the connector and fiber type, but the order code printed on the datasheet governs.
Documents and quotation
The Moxa datasheet for this family (moxa-mgate-mb3170-mb3270-series-datasheet-v2.1) 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 MB3170-MB3270 series datasheet v2.1 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
What is the Moxa MGate MB3270?
Moxa lists it as: 2-port advanced Modbus gateway, 0 to 60°C operating temperature. A two-port gateway that converts between Modbus RTU/ASCII on serial lines and Modbus TCP on Ethernet, with enough capacity to handle many simultaneous TCP masters.
What power supply does the MGate MB3270 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 MB3270?
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 MB3270 convert?
Per Moxa's description, it is a 2-port advanced Modbus gateway. Industrial protocols listed on the Ethernet side: Modbus TCP Client (Master); Modbus TCP Server (Slave).
Where is the MGate MB3270 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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