Foxboro N0311GD Multi-Protocol Communication I/O Module

Product Description

The Foxboro N0311GD is a versatile communication and I/O interface module engineered for the Foxboro I/A Series DCS. It delivers multi-protocol connectivity, signal conditioning, and real-time data exchange between field instruments and the DCS controller, making it a key component for heterogeneous industrial networks.

The module supports Modbus RTU, Modbus TCP/IP, HART, and proprietary Foxboro protocols, enabling seamless integration across various vendors’ devices. Communication is facilitated through Ethernet (10/100 Mbps), RS‑232, and RS‑485 ports, while dual-network redundancy ensures high availability in critical systems. Rugged construction, EMI/RFI shielding, surge protection, and conformal-coated electronics allow reliable operation in harsh industrial environments.

Some variants function as an 8-channel digital input module, providing isolated inputs for PLC/DCS integration with <1 ms response time. This dual-purpose design enhances deployment flexibility across multiple control system architectures.

Key Features

• Multi-protocol support: Modbus RTU, Modbus TCP/IP, HART, Foxboro proprietary

• Communication ports: Ethernet 10/100 Mbps, RS‑232, RS‑485

• Dual-network redundancy for fault-tolerant operation

• Real-time diagnostics for monitoring and troubleshooting

• Rugged, conformal-coated electronics with EMI/RFI shielding and surge protection

• 24 VDC nominal power with optional redundant input

• Rack-mounted or chassis-integrated installation

• Optional digital input variant: 8 isolated 24 VDC inputs, <1 ms response time, IP20

Technical Specifications

Communication & Networking

• Supported Protocols: Modbus RTU, Modbus TCP/IP, HART, Foxboro proprietary

• Ports: Ethernet 10/100 Mbps, RS‑232, RS‑485

• Dual-network redundancy supported

Electrical

• Supply Voltage: 24 VDC nominal

• Redundant Input: Supported

• Power Consumption: ~5 W

Environmental

• Operating Temperature: –20°C to +70°C

• Storage Temperature: –40°C to +85°C

• Humidity: 5–95% non-condensing

• Protection: EMI/RFI shielding, surge protection, conformal coating

• Digital-input variant: IP20 rated

Mechanical

• Mounting: Rack-mounted or chassis-integrated

• Dimensions: Communication module: 140 × 60 × 35 mm; Digital-input variant: 100 × 50 × 25 mm

• Weight: 0.5 kg

Applications

• Gateway for mixed-protocol industrial networks

• Integration of Modbus, HART, and proprietary Foxboro devices

• Real-time data acquisition, monitoring, and diagnostics

• Manufacturing, petrochemical, power generation, and oil & gas

• Digital input processing for sensors, switches, and machine signals

FAQ

Q: Which communication protocols does the N0311GD support?
A: Modbus RTU, Modbus TCP/IP, HART, and proprietary Foxboro protocols.

Q: Can it be used as a digital input module?
A: Yes, certain variants offer 8 isolated 24 VDC digital inputs with <1 ms response time.

Q: Is it suitable for harsh environments?
A: Yes, the module features rugged construction, EMI/RFI shielding, surge protection, and conformal-coated electronics.

Q: How is it mounted?
A: It supports rack-mounted or chassis-integrated installation; some digital-input variants allow DIN-rail mounting.