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Brand: MOXA
Moxa MGate 4101-MB-PBS Modbus to PROFIBUS Slave Gateway
Description
What the MGate 4101-MB-PBS converts between
MGate 4101-MB-PBS is listed by Moxa as: 1-port Modbus-to-PROFIBUS Slave gateway, 12 to 48 VDC, 0 to 60°C operating temperature. A one-port gateway that lets a PROFIBUS DP master read and write Modbus RTU or ASCII devices, acting as PROFIBUS DP-V0 slave on one side and Modbus master or slave on the other.
On the datasheet side, 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 500 g (1.10 lb); the enclosure is rated IP30; Note: It is recommended to attach the M3x3mm Nylok screws at the rear side.
Standards and approvals printed for this model include hazardous-location listings of ATEX; Class I Division 2; IECEx; safety standard IEC 60950-1; UL 60950-1; IEC 62368-1; UL 62368-1. Approvals can differ between variants of a series, so check the one on the exact order code.
Technical specifications
| Parameter | Specification |
|---|---|
| Serial Interface: No. of Ports | 1 |
| Serial Interface: Connector | DB9 male |
| Serial Standards | RS-232/422/485 |
| Serial Interface: Baudrate | 50 bps to 921.6 kbps |
| Data Bits | 7, 8 |
| Stop Bits | 1, 2 |
| Flow Control | DTR/DSR; RTS/CTS |
| Pull High/Low Resistor for RS-485 | 1 kilo-ohm, 150 kilo-ohms |
| Terminator for RS-485 | 120 ohms |
| Serial Interface: Isolation | 2 kV (I models) |
| 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 |
| Functions Supported | 1, 2, 3, 4, 5, 6, 15, 16, 23 |
| Max. No. of Commands | 100 |
| Modbus RTU/ASCII: Input Data Size | 7744 bytes |
| Modbus RTU/ASCII: Output Data Size | 7744 bytes |
| PROFIBUS Interface: Industrial Protocols | PROFIBUS DP |
| PROFIBUS Interface: No. of Ports | 1 |
| PROFIBUS Interface: Connector | DB9 female |
| PROFIBUS Interface: Baudrate | 9600 bps to 12 Mbps |
| PROFIBUS Interface: Isolation | 2 kV (built-in) |
| PROFIBUS: Mode | DP-V0 Slave |
| Max. No. of Master Connections | 1 |
| Max. No. of PROFIBUS I/O Modules | 24 per page |
| Max. No. of PROFIBUS Pages | 32 |
| PROFIBUS: Input Data Size | 7744 bytes |
| PROFIBUS: Output Data Size | 7744 bytes |
| Input Voltage | 12 to 48 VDC |
| Input Current | 275 mA @ 12 VDC |
| Contact Current Rating | Resistive load: 1 A @ 24 VDC |
| Housing | Metal |
| Weight | 500 g (1.10 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 |
| Safety | IEC 60950-1; UL 60950-1; IEC 62368-1; UL 62368-1 |
| 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 |
Selecting the right variant
It is the practical choice when a PLC with a PROFIBUS master needs to read meters, drives or analysers that only speak Modbus serial. The PROFIBUS side is a DB9 female socket with 2 kV isolation, running from 9600 bps up to 12 Mbps.
On the practical side, the housing is metal; the stated MTBF is MGate 4101-MB-PBS models: 1,537,948 hrs; MGate 4101I-MB-PBS models: 1,315,666 hrs; the warranty period is 5 years. Treat the MTBF as a manufacturer prediction under its stated method, not a guarantee for your site.
Before ordering, confirm whether the gateway has to be Modbus master or slave, the isolated I or -T versions of the series, and the PROFIBUS GSD file that your engineering tool needs. Seven Star LLC is an independent supplier in Muscat and quotes against the exact code you give us.
Related models in the MGate 4101-MB-PBS family
Moxa groups the MGate 4101-MB-PBS with 3 related order codes under one family: MGate 4101-MB-PBS, MGate 4101-MB-PBS-T, MGate 4101I-MB-PBS, MGate 4101I-MB-PBS-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.
Related MOXA products: Moxa MGate 5111 Modbus/PROFINET to PROFIBUS Gateway, Moxa MGate 5105-MB-EIP Modbus to EtherNet/IP Gateway, Moxa MGate 5109 Modbus to DNP3 Gateway, Moxa MGate 5103 1-Port Modbus/EtherNet/IP to PROFINET Gateway, Moxa MGate 5101-PBM-MN PROFIBUS to Modbus TCP Gateway and Moxa MGate 5118 J1939 to Modbus/PROFINET Gateway.
Documents and quotation
More products in this range: Industrial Communications. The Moxa datasheet for this family (moxa-mgate-4101-mb-pbs-series-datasheet-v1.1) is attached to this page. Request a quotation with the exact order code, quantity and delivery location, and we will respond with availability.
Datasheets & Documents
- Datasheet Moxa MGate 4101-MB-PBS series datasheet v1.1 Download
Reviews (0)
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.
FAQ
Questions about the Moxa MGate 4101-MB-PBS Modbus to PROFIBUS Slave
Answers from our engineering team on installation, compatibility and integration.
01What is the Moxa MGate 4101-MB-PBS?
Moxa lists it as: 1-port Modbus-to-PROFIBUS Slave gateway, 12 to 48 VDC, 0 to 60°C operating temperature. A one-port gateway that lets a PROFIBUS DP master read and write Modbus RTU or ASCII devices, acting as PROFIBUS DP-V0 slave on one side and Modbus master or slave on the other.
02What power supply does the MGate 4101-MB-PBS 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.
03What operating temperature range applies to the MGate 4101-MB-PBS?
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.
04Which protocols does the MGate 4101-MB-PBS convert?
Per Moxa's description, it is a 1-port Modbus-to-PROFIBUS Slave gateway. Industrial protocols listed on the Ethernet side: Modbus RTU/ASCII Master; Modbus RTU/ASCII Slave; PROFIBUS DP-V0 Slave.
05Where is the MGate 4101-MB-PBS 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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