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Overview
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Specifications
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Downloads
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Overview
Moxa MGate MB3470I-TB-G2 – Advanced 4-Port Modbus Gateway with 2 kV Isolation and Terminal Block Serial Interface
The MB3470I-TB-G2 connects multiple Modbus RTU/ASCII devices to Modbus TCP networks using four isolated terminal block serial ports and dual Ethernet interfaces. It supports transparent and agent (poll & cache) modes, TLS-secured configuration, and redundant power inputs.
- 4 isolated serial ports RS-232/422/485 terminal block connectors with 2 kV protection
- Dual Ethernet ports for cascade or dual-subnet configuration
- Security HTTPS (TLS 1.2), SNMPv3, AES/RSA/ECC encryption; IEC 62443-4-1 compliant
- Reliable operation Dual 12–48 V DC power inputs, relay output, and IP30 metal housing
- Diagnostics Web console, DSU, MXconfig, and one-click Modbus monitoring
Built for control panels and automation cabinets, the MB3470I-TB-G2 delivers isolated, secure, and efficient Modbus integration across high-density industrial networks.
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Specifications
Technical Specifications
Networking
- 2 × 10/100BaseT(X) RJ45 (auto MDI/MDI-X, 1.5 kV isolation)
- Ethernet cascade or dual-subnet configuration (software-selectable)
Serial Interface
- Ports: 4 (terminal block)
- RS-232/422/485 (software-selectable)
- Baud 50 bps–921.6 kbps; Data bits 7/8; Parity None/Even/Odd/Space/Mark; Stop bits 1/2
- Flow control: RTS/CTS, DTR/DSR, RTS Toggle
- RS-485: ADDC auto direction; software-selectable 120 Ω termination & 1 kΩ/150 kΩ bias
- Isolation: 2 kV optical isolation per port
Protocol & Performance
- Modbus TCP Client/Server; Modbus RTU/ASCII Client/Server; Proprietary serial (agent mode)
- Modes: Transparent or Agent (poll & cache)
- Connections: 32 clients & 32 servers; 128 commands; 150 tags / 2048 B tag memory
Management & Security
- Web console (HTTP/HTTPS), Device Search Utility, MXconfig, MXview One
- SNTP client; MIB-II (RFC1213, RFC1317)
- HTTPS (TLS 1.2), SNMPv3; AES-128/256, RSA (1024–4096 bit), ECC-256/384/521, SHA-256/384, HMAC
Power & I/O
- 12–48 V DC dual redundant inputs; ≈ 452 mA @ 12 V DC
- Relay output: 1 A @ 30 V DC (resistive load)
Physical & Environmental
- Metal housing, IP30; DIN-rail or wall mount
- Dimensions: 42 × 89 × 132 mm (with ears) / 42 × 89 × 129 mm (without DIN kit)
- Weight: 444 g
- Operating temperature: −10 to 60 °C; Humidity: 5–95 % non-condensing
Certifications & Reliability
- EN 61000-6-2/-6-4, CISPR 32, IEC 61000-4-2/-3/-4/-5/-6/-8/-11
- EN/UL 62368-1; ATEX, IECEx, Class I Div 2, DNV (pending)
- MTBF: ≈ 2,890,000 hours (Telcordia SR-332); Warranty: 5 years
Ordering
- MB3470I-TB-G2 – 2 × RJ45 Ethernet, 4 × terminal block serial ports with 2 kV isolation, −10 to 60 °C
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Downloads