HONEYWELL 51401088-100 | Communication Network Interface Board

Product Overview

The Honeywell 51401088-100 is a Communication Network Interface Board used as part of an industrial control system network architecture. The board is identified as Revision D and carries the additional part number 4-04-371-4778.

The referenced unit is listed with Firmware Version F and Flash Version E, providing useful identification information when matching a replacement board against an existing installation. The listed board weight is approximately 1.440 kg.

For legacy Honeywell systems, the complete identification marking is important. A board with the same general function but a different revision or part number should not automatically be treated as a direct substitute.

Key Features

Honeywell Communication Network Interface Board
Model / MPN: 51401088-100
Revision: D
Part Number: 4-04-371-4778
Firmware Version: F
Flash Version: E
Approximate weight: 1.440 kg
Designed for integration within an existing industrial control network
Suitable for maintenance and spare-parts replacement of compatible Honeywell equipment

Technical Datasheet

Parameter	Details
Brand	Honeywell
Product Type	Communication Network Interface Board
MPN	51401088-100
Part Number	4-04-371-4778
Revision	D
Firmware Version	F
Flash Version	E
Weight	Approx. 1.440 kg
Country of Origin	United States
Referenced Condition	Used

The above identification data is based on the current referenced listing.

Typical Applications

This type of interface board is intended for use within industrial automation and control-system environments where network communication between control hardware and associated system equipment is required.

Potential maintenance applications include:

Industrial automation control systems
Legacy Honeywell control installations
Control-system communication networks
Replacement of failed or aging interface boards
Critical spare-parts inventory
System restoration and maintenance projects

The exact host system and network function should be verified from the original cabinet documentation or equipment configuration before installation.

Installation & Configuration

Before replacing an existing board, record the identification information from the original unit, including:

MPN and part number.
Hardware revision.
Firmware version.
Flash version.
PCB labels and connector markings.
Existing cable and terminal connections.

Power should be removed before removing or installing the board. Handle the PCB using appropriate ESD precautions and avoid touching exposed contacts or components.

After installation, verify that the board is correctly seated and that all network connections are returned to their original positions. If system configuration or firmware compatibility is required, use the approved Honeywell documentation and configuration procedures for the host system.

Maintenance & Inspection

For a spare or replacement 51401088-100 board, an incoming inspection should include:

PCB surface condition
Connector and contact condition
Signs of corrosion or moisture
Burn marks or overheated components
Loose or damaged components
Identification labels and revision markings
Firmware and Flash version markings
Mechanical damage around mounting points

For long-term storage, use ESD-safe packaging and keep the board in a clean, dry environment. Before field installation, a controlled functional test is recommended whenever suitable test equipment and the applicable system are available.

Replacement Notes

When purchasing or replacing this board, match the complete identification set:

51401088-100
4-04-371-4778
Rev D
Firmware F
Flash E

Revision differences should be taken seriously when dealing with legacy control hardware. Do not assume that another Honeywell network interface board is interchangeable solely because the board has a similar appearance or function.

For an exact replacement, compare the original board’s label, revision, firmware/flash information, connectors and system configuration before installation.