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Overview
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Specifications
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Downloads
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Overview
Moxa MGate MB3270-TB-G2 – Advanced 2-Port Modbus Gateway with Terminal Block Serial Interface
The MB3270-TB-G2 integrates Modbus RTU/ASCII serial devices with Modbus TCP systems using
dual terminal block connectors and dual Ethernet ports. It supports transparent and
agent (poll & cache) modes, secure TLS management, and redundant power for reliable performance.
- Panel-friendly design Terminal block connectors for durable, fixed wiring installations
- Flexible networking Dual RJ45 Ethernet ports for cascade or dual-subnet operation
- Security HTTPS (TLS 1.2), SNMPv3, AES/RSA/ECC encryption, IEC 62443-4-1 compliance
- Power redundancy Dual 12–48 V DC inputs and relay output for alarm notification
- Diagnostics Web console, DSU, MXconfig, and Modbus traffic monitoring tools
Ideal for industrial automation and infrastructure applications requiring stable,
panel-mounted Modbus integration with secure data access.
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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: 2 (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: None (2 kV on “I” variants)
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: 25 × 89 × 132 mm (with ears) / 25 × 89 × 129 mm (without DIN kit)
- Weight: 356 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: ≈ 2,910,000 hours (Telcordia SR-332); Warranty: 5 years
Ordering
- MB3270-TB-G2 – 2 × RJ45 Ethernet, 2 × terminal block serial ports, −10 to
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Downloads