Moxa MGate 5105-MB-EIP Modbus to EtherNet/IP Gateway

Bringing Modbus devices onto an EtherNet/IP network and to the cloud

The Moxa MGate 5105-MB-EIP is a one-port industrial gateway that converts Modbus RTU, ASCII and TCP to EtherNet/IP. It can act as a Modbus master or slave to collect data from existing meters, drives or analysers, store the latest values and present them to an EtherNet/IP scanner such as a Rockwell PLC as adapter data. It can also run as an EtherNet/IP scanner. In addition, it publishes data through MQTT, with TLS and certificates, in JSON or raw format, with built-in device SDKs for Azure and Alibaba Cloud, so the same gateway serves local control and remote monitoring such as energy or asset management. A microSD slot backs up configuration and logs and buffers data if the cloud link drops.

Technical specifications

Ordering codes

The box includes an RJ45-to-DB9 console cable, a DIN-rail kit, a quick installation guide and a warranty card.

Planning the integration

Map the Modbus registers you need into the gateway memory, then import the EtherNet/IP data through the Rockwell AOI or EDS file listed on the Moxa site, and confirm the update rates your PLC needs. Limits to check are 100 Modbus commands and 2048 bytes in each direction. Use the web console I/O Data Mapping and Data View pages to confirm values before commissioning. If the target is PROFINET or DNP3 instead, see the MGate 5101-PBM-MN and MGate 5109 models. Seven Star LLC, an independent supplier in Muscat, quotes the exact code you need; confirm cloud-connectivity requirements and temperature range before ordering. The datasheet (version 1.4) is attached, and related products are in Industrial Communications. Day-to-day maintenance is handled in the web console: an administrator can change every setting while general users have read-only access, I/O Data Mapping shows the memory addresses used by each protocol, and per-protocol diagnostics help locate a failing node. A microSD card can copy one configuration to several gateways, which speeds up repeated installations such as a row of identical skids. Environmental tests listed include shock (IEC 60068-2-27), vibration (IEC 60068-2-6 and -64) and free fall (IEC 60068-2-32), and the EMI class is FCC Part 15B Class B. The two Ethernet ports allow daisy-chaining, and the gateway supports SSH and SNMPv3 alongside HTTPS with TLS 1.3 for secure management. The MQTT side is configured in the web console, so confirm the broker address, topics and certificates with your IT team.

How the Moxa MGate 5105-MB-EIP works

The gateway talks Modbus on one side and EtherNet/IP on the other. It polls the Modbus devices, keeps the latest values in memory and presents them to the EtherNet/IP scanner. A PLC then reads the Modbus data as normal adapter data. The same values can also go to the cloud through MQTT.

Where the MGate 5105-MB-EIP is used

• Rockwell PLC systems that need Modbus meters
• Energy monitoring
• Asset management
• Drives and analyzers with Modbus ports
• Cloud monitoring of existing equipment

Selection checklist for the MGate 5105-MB-EIP

• Modbus RTU, ASCII or TCP side
• Master or slave role
• Number of Modbus commands
• EtherNet/IP scanner or adapter role
• Cloud publishing need
• Operating temperature range
• Power supply and redundancy
• DIN rail space

Installation, commissioning and maintenance notes for the MGate 5105-MB-EIP

Mount the gateway on a DIN rail. Connect the serial line and the Ethernet ports. Power both inputs from 12 to 48 VDC. Define the Modbus commands in the web console. Map the data to the EtherNet/IP assemblies. Store the configuration on the microSD card.

Requesting a quotation for the Moxa MGate 5105-MB-EIP

Please send the Modbus devices, the PLC type and the temperature range. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

MGate 5105-MB-EIP protocol conversion

The MGate 5105-MB-EIP converts Modbus RTU, ASCII and TCP to EtherNet/IP.

MGate 5105-MB-EIP serial port

It has one RS-232, RS-422 or RS-485 port.

MGate 5105-MB-EIP Ethernet ports

It has two 10/100BaseT(X) ports with built-in cascading.

MGate 5105-MB-EIP Modbus commands

It handles up to 100 Modbus commands.

MGate 5105-MB-EIP data size

It supports 2048 bytes of input and 2048 bytes of output.

MGate 5105-MB-EIP connections

It allows 16 Modbus TCP client and 32 server connections.

MGate 5105-MB-EIP MQTT

It publishes data through MQTT with TLS.

MGate 5105-MB-EIP cloud support

It has built-in device SDKs for Azure and Alibaba Cloud.

MGate 5105-MB-EIP microSD slot

The microSD slot backs up the configuration and buffers data if the cloud link drops.

MGate 5105-MB-EIP power

It has redundant dual inputs for 12 to 48 VDC.

MGate 5105-MB-EIP relay output

The relay output is rated 2 A at 30 VDC.

MGate 5105-MB-EIP housing

The metal housing is IP30 and mounts on a DIN rail.

MGate 5105-MB-EIP temperature models

The standard model works from 0 to 60 degrees C, and the T model from minus 40 to plus 75 degrees C.

Gateway records for the MGate 5105-MB-EIP

Record the command list, the assembly map and the firmware version.

Choosing the right MGate 5105-MB-EIP model

Choose the T model for cabinets with wide temperature swings.