Honeywell 51401583-200 NGI Network Gateway Interface Card for TDC 3000 / TPS LCN

Brand Honeywell

Model Honeywell 51401583-200

Product Overview

The Honeywell 51401583-200 is a specialized communication board officially designated as the NGI — Network Gateway Interface — within the Honeywell TDC 3000 and TPS (Total Plant Solution) distributed control system architectures. It is not a general-purpose Ethernet NIC; rather, it is a dedicated functional board that acts as the communication gateway between the Local Control Network (LCN) and external networks, most notably the Plant Information Network (PIN), while also supporting connectivity to carrier-band networks such as the Universal Control Network (UCN). Installed in a TDC 3000 five-slot or ten-slot node chassis, the Honeywell 51401583-200 works in conjunction with the companion NGIO board, a gateway processor, the chassis backplane, and the network cabling to form a complete, validated Network Gateway node.

The primary role of the Honeywell 51401583-200 is to provide a controlled, protocol-aware bridge for data exchange between otherwise separate automation domains. Within a TDC 3000 system, the LCN is the high-speed deterministic backbone that interconnects consoles, application modules, history modules, and control files. While exceptionally well suited to real-time process control, the LCN is a proprietary Honeywell network and is not natively compatible with standard IT infrastructure. The Honeywell 51401583-200 resolves this by translating and routing LCN data — process parameters, alarms, historical records, and configuration files — into forms usable by plant information systems, MES platforms, and enterprise-level servers. This enables operators to view real-time process data on modern HMIs, allows maintenance teams to centralize alarm history, and supplies production data for performance analysis without replacing the entire control system.

Performance is a defining characteristic: the associated Network Gateway architecture supports throughput of up to approximately 1,200 point parameters per second, with file-transfer operations reaching up to 12,000 words per second — figures that make the module genuinely capable of handling the data demands of multi-unit, multi-domain plant-wide integration. With a weight of approximately 0.74–0.84 kg and a standard functional-board form factor, the Honeywell 51401583-200 slots directly into the existing backplane, receives power from the system supply, and communicates over the LCN bus alongside other functional boards such as the EMPU, MEM, and CNI. For the many plants that continue to rely on TDC 3000 for critical process control, the Honeywell 51401583-200 is the key that unlocks both legacy-asset protection and modern data-connectivity ambitions.

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	51401583-200
Manufacturer	Honeywell
Board Designation	NGI — Network Gateway Interface
Alternate Designation	Network Interface Card (NIC) / Network Gateway (NG) Board
Product Type	Communication / Gateway Interface Functional Board
System Family	Honeywell TDC 3000 / TPS Series
Primary Networks	LCN (Local Control Network)
External Networks	PIN (Plant Information Network), UCN (Universal Control Network)
Gateway Role	Bridge/routing node between two or more LCN domains and external networks
Point Parameter Throughput	Up to ≈1,200 point parameters per second
File Transfer Rate	Up to 12,000 words per second (synchronous execution)
Communication Standard	IEEE 802.4 (carrier-band)
Supported Network Types	Carrier-band networks (UCN), fiber-optic star networks
Companion Board	NGIO (Network Gateway I/O)
Chassis Compatibility	Five-slot / Ten-slot Module Service chassis; 10-slot Split Node / Multinode cardfiles
Processor Reference	HPK2 / K2LCN / K4LCN gateway processors (configuration-dependent)
Rated Operating Voltage	24 VDC (backplane-supplied)
Channel Isolation	1,500 VDC
Front-Panel Indicators	SELF TST / ERR, PASS, MOD TEST, BUS TRAN, TX / RCVE
Approx. Dimensions	36.4 × 36.6 × 1.5 cm (form-factor dependent)
Approx. Weight	0.74–0.84 kg
Operating Temperature	0 °C to +55 °C (control-room grade)
Country of Origin	USA

Main Features and Advantages

Purpose-built LCN gateway, not a generic NIC

The most important distinction of the Honeywell 51401583-200 is that it is engineered specifically for the TDC 3000 LCN environment. Where a standard industrial Ethernet card would be fundamentally incompatible with the LCN’s proprietary protocol and deterministic timing, the Honeywell 51401583-200 understands the network natively. It participates correctly in LCN handshakes, node addressing, and token-passing behavior, which means it integrates without disturbing the real-time control traffic that the rest of the plant depends on.

Dual-domain connectivity (LCN ↔ PIN / UCN)

A single Honeywell 51401583-200 establishes the communication path between the LCN and the Plant Information Network, while also supporting carrier-band UCN and fiber-optic star network architectures. This multi-network capability allows one gateway node to serve several integration purposes simultaneously: delivering process data upward to MES/ERP, exchanging data laterally between separate LCN domains, and maintaining the UCN pathway for control stations such as HPM and APM. The result is a simpler, more economical integration architecture with fewer translation layers.

High-throughput data and file transfer

With a rated capacity of up to 1,200 point parameters per second and file transfers reaching 12,000 words per second, the Honeywell 51401583-200 handles far more than occasional tag reads. It can sustain the continuous flow of process variables, alarm/event records, and bulk historical files required by modern data historians and analytical platforms. For plants implementing digital-twin, predictive-maintenance, or advanced-process-control initiatives, this throughput ensures that the gateway is never the bottleneck.

Integrated diagnostics and front-panel visibility

The board provides front-panel status indications for self-test, module test, bus transfer, error conditions, and network transmit/receive activity. These visual cues give field engineers immediate insight into gateway health without requiring software tools or a trip to the operator console. Combined with the onboard fault-detection logic, the Honeywell 51401583-200 supports rapid root-cause isolation — distinguishing a board-level failure from a cable, backplane, or configuration issue.

Electrical isolation and signal integrity

Rated for 1,500 VDC of channel isolation, the Honeywell 51401583-200 protects the sensitive LCN backplane from surges, ground loops, and electromagnetic interference that can arise where gateway links extend between domains or across cabinet boundaries. This isolation is essential to preserving the determinism and reliability of the control network while still permitting extensive external connectivity.

Legacy-asset life extension

Perhaps the greatest strategic advantage of the Honeywell 51401583-200 is the protection it affords the installed TDC 3000 base. By providing a proven, compatible route to modern IT and plant-information infrastructure, the module allows plant owners to defer costly and disruptive full-system migration while still meeting today’s data-integration, cybersecurity, and operational-visibility requirements. It is a genuine enabler of “modernize without replacing.”