General
Supported protocols	Modbus RTU/ASCII/TCP, EtherNet/IP, MQTT
MQTT version	v3.1.1
MQTT QoS	0, 1, 2
TLS versions	1.0/1.1/1.2
MQTT data tags	up to 300
MQTT messages	up to 20
MQTT functions	Keep Alive, Retain Message, Last Will, Clean Session
Configuration options	Web console (HTTP/HTTPS), Device Search Utility, MGate Manager, Telnet, SSH, serial console
Management functions	ARP, DHCP, DNS, SNMPv1/v2c/v3, SMTP, TCP/IP, UDP, NTP, RFC1213, RFC1317 MIBs
Safety functions	HTTPS (TLS 1.3), AES-128/256, SHA-256, SNMPv3
Serial interface	1x DB9 male, RS-232/422/485
Serial data rate	50 bps to 921.6 kbps
Serial isolation	2 kV
Supported serial functions	1, 2, 3, 4, 5, 6, 15, 16, 23
Max. serial commands	100
Serial input/output	2048 bytes
Ethernet connections	2x 10/100BaseT(X)
Ethernet connector	RJ45
Ethernet isolation	1,5 kV
Power input	12–48 VDC
Power consumption	455 mA @ 12 VDC
Power connection	Euroblock connection
Max. amperage	2 A @ 30 VDC
microSD slot	up to 32 GB (SD 2.0)
Data buffering	up to 2 GB
Housing	Metal
Degree of protection	IP30
Operation temperature	0 to 60 °C (standard), -40 to 75 °C (T-model)
Air humidity	5–95 % (non-condensing)
MTBF	859.422 hours
Certifications	EMC: EN 55032/35, CISPR 32, FCC Part 15B Class B; Safety: EN 62368-1, UL 508; Ex zone: ATEX, IECEx, Class I Div 2; Shock, vibration, drop: IEC 60068 series
Auto MDI/MDI-X
Redundant power supply

The Moxa MGate 5105-MB-EIP is an industrial Ethernet gateway that enables communication between devices using different protocols. It facilitates the integration of Modbus devices into EtherNet/IP networks and supports the protocols Modbus RTU/ASCII/TCP as well as EtherNet/IP. Data is buffered within the device and converted into EtherNet/IP packets, allowing them to be retrieved and processed by EtherNet/IP scanners. Additionally, the gateway enables data transmission via MQTT and cloud-based platforms such as Azure IoT or Alibaba IoT, making it suitable for IIoT applications such as energy and asset management.

Applications

The gateway is designed for industrial environments where a bridge between legacy systems and modern networks is required. It is suitable, for example, for connecting machines, sensors, and controls communicating via Modbus with higher-level control systems using EtherNet/IP. Support for MQTT and cloud platforms extends its use in networked production environments where data needs to be monitored and analyzed in real time.

Functions and Features in Detail

The MGate 5105-MB-EIP can operate as both a Modbus master and a Modbus slave, enabling flexible integration into existing systems. Configuration is performed via a web console (HTTP/HTTPS), with no additional software required. Additional configuration options include the Device Search Utility, MGate Manager, as well as Telnet, SSH, and a serial console. Diagnostic functions for protocols and communication analysis support troubleshooting during operation.

Technology Explained Simply

The device features two Ethernet ports (RJ45, 10/100BaseT(X)) with Auto MDI/MDI-X and 1.5 kV isolation, ensuring a secure and flexible network connection. The serial interface (DB9, RS-232/422/485) supports data rates from 50 bps to 921.6 kbps and offers 2 kV isolation. The redundant power supply with two DC inputs (12–48 VDC) enhances operational reliability, as operation can continue via the second input if one input fails. Power supply is provided via Euroblock connectors.

Compatibility and Accessories

The gateway supports Modbus RTU/ASCII/TCP, EtherNet/IP (scanner/adapter), and MQTT (v3.1.1) protocols. MQTT connections can be secured using TLS 1.0/1.1/1.2, Root CA, client certificate, and private key. Up to 300 data tags and 20 messages can be transmitted via MQTT. Support for Azure IoT and Alibaba IoT enables integration with third-party cloud platforms. Configuration can be backed up or transferred to multiple devices via a microSD slot (up to 32 GB, SD 2.0), with data buffering capacity up to 2 GB.

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Mounting and Installation

The device features a metal housing with protection rating IP30 and dimensions 36 x 105 x 140 mm. It is designed for industrial environments and can be mounted on a wall or in an enclosure. Installation is carried out using the provided connectors and the web console for configuration.

Operational Advantages

The redundant power supply and robust construction increase device availability. Support for MQTT and cloud platforms enables scalable and secure data transmission. The web console and diagnostic functions simplify maintenance and troubleshooting. The MTBF is 859,422 hours (Telcordia SR332), indicating high reliability. Certifications to EN 55032/35, CISPR 32, FCC Part 15B Class B, EN 62368-1, UL 508, ATEX, IECEx, Class I Div 2, and IEC 60068 series for shock, vibration, and drop testing guarantee suitability for demanding industrial environments. The operating temperature is standardly between 0 and 60 °C, with a T-model available for operation from -40 to 75 °C. Humidity is 5–95 % (non-condensing). The warranty is 5 years.

Security

The device offers security features such as HTTPS (TLS 1.3), AES-128/256, SHA-256, and SNMPv3 to protect data transmission. Authentication and encryption ensure secure access to the device and transmitted data.

Management Functions

Network management functions include ARP, DHCP, DNS, SNMPv1/v2c/v3, SMTP, TCP/IP, UDP, NTP, as well as RFC1213 and RFC1317 MIBs. These enable efficient network management and monitoring.

Operating Conditions

The device is designed for industrial environments and can operate at temperatures from 0 to 60 °C (standard). The T-model extends the temperature range to -40 to 75 °C. Humidity is 5–95 % (non-condensing). Operational reliability is ensured by the redundant power supply and robust construction.

Certifications

The device complies with EMC directives EN 55032/35, CISPR 32, FCC Part 15B Class B, safety standards EN 62368-1 and UL 508, as well as hazardous area certifications ATEX, IECEx, and Class I Div 2. Testing according to IEC 60068 series for shock, vibration, and drop confirms mechanical robustness.

Warranty

The warranty is 5 years; further details are available at the specified website.