EATON NE-FWMB12 Industrial Modbus Read-Only Firewall Gateway

EATON NE-FWMB12 Industrial Modbus Read-Only Firewall Gateway
Material Complete Number: NE-FWMB12 (51154724-400)
Brand: Eaton, Industrial Industrial Control Network Security Isolation Module, for SCADA/PLC Modbus RTU/TCP scenarios
I. Model Interpretation
NE: Network Element Network Security Series
FW: Firewall Firewall
MB: Modbus Bus Specialized
12: Corresponding hardware model version, read-only one-way isolation architecture

Core Positioning
One-way read-only Modbus security isolation gateway
Realize one-way isolation between the control network and the upper-level monitoring network: The upper-level system can only read the Modbus data from PLC / instruments, but cannot issue write instructions or modify device parameters, completely preventing illegal tampering of on-site control equipment by the external network, power plants, chemical plants, metallurgy DCS / excitation system standard network protection accessories.

Key Hardware Parameters Power supply
24VDC industrial direct current; typical power consumption < 170mA, maximum 350mA
Network port specifications
Two independent 100Mbps RJ45 ports (internal network / external network physically isolated), 10/100M auto-sensing, auto-detection of full/half duplex mode Installation
Standard 35mm DIN rail snap-in installation, built-in in the cabinet
Protection and temperature range
Protection class: IP20
Operating temperature: -40℃ ~ +70℃ (wide temperature industrial grade)
Storage: -40℃ ~ +85℃
Dimensions and weight
120×80×60mm, net weight 0.36kg
Explosion-proof certification
Class I Div2 / Zone 2, suitable for chemical and oil and gas hazardous area cabinets

Core security functions
Unidirectional read-only hard isolation
Hardware at the bottom blocks external network write operations, only allowing Modbus read function (01/02/03/04 function codes); blocking write registers, forced coils, downloading programs, etc. high-risk instructions
Multi-layer message filtering
Two-layer link, three-layer IP, four-layer port status detection, supporting SCADA protocol deep message detection DPI
Plug-and-play without configuration
No need to modify the original PLC network, no need for configuration software, power on to complete unidirectional isolation deployment
Complete diagnostic indicator lights
Power, operation failure, link status, data transmission alarm LED, quickly troubleshoot network disconnection / attack alarm
Event logs
Record illegal write access, abnormal messages, facilitating security audit traceability

Typical matching scenarios
ABB UNITROL excitation system (PPC907BE, UFC921A series motherboards) upper-level monitoring isolation
ABB AC800M / 800xA DCS system plant management network and control network security demarcation
Inferential 3500, EPRO vibration monitoring system data upload isolation
Chemical ESD safety instrument, oil and gas station Modbus bus network protection
Steel mill rolling mill, water treatment PLC remote upper-level monitoring security isolation