Honeywell 51400700-100 Data Hiway Interface

The Honeywell 51400700-100 Data Hiway Interface (DHI) is a communication interface board used in Honeywell Hiway Gateway architectures. It provides a communication bridge between the Local Control Network (LCN) and the Data Hiway network, enabling protocol handling, data exchange, network polling, alarm acquisition, and time synchronization functions within Honeywell TDC control system environments.

Technical Specifications

Communication Gateway Function

The Data Hiway Interface serves as the communication link between Honeywell's Local Control Network and the Data Hiway network infrastructure. It manages the exchange of operational data between networks that have different communication characteristics and data transfer requirements.

Within a Hiway Gateway, the module performs protocol handling and message processing to allow information generated on one network to be transferred and utilized by devices connected to the other network.

Data Buffering and Protocol Conversion

The board is responsible for buffering, organizing, and forwarding communication traffic between the high-bandwidth LCN environment and the Data Hiway network. This functionality helps coordinate message transfer and timing between network segments that may operate with different traffic patterns and communication priorities.

By managing data flow at the gateway level, the interface supports reliable information sharing among distributed control system components.

Hiway Polling and Network Supervision

In a single-branch Data Hiway configuration where no higher-priority polling device is present, the interface can function as the primary polling device on the network.

The module also performs alarm scanning functions, automatically collecting alarm information from connected field devices and making status information available to the wider control system.

Time Synchronization

The Data Hiway Interface provides centralized time synchronization services for connected Data Hiway devices. Maintaining a common system time across controllers and network nodes supports consistent event reporting, alarm processing, and operational record keeping.

This synchronization role is particularly important in distributed control architectures where multiple devices exchange process and status information.

Installation and System Integration

The module is designed for use within Honeywell TDC-based architectures and supports installation in compatible system bases, including standard rack and gateway configurations used for Data Hiway communications.

The board communicates through dual coaxial network connections and is intended for integration with existing Honeywell LCN and Data Hiway infrastructures.

Environmental Characteristics

The module operates within a temperature range of 0 deg C to 60 deg C and supports relative humidity from 5% to 95% without condensation. Standard rack ventilation is sufficient for thermal management under normal operating conditions.

The multilayer rigid-board construction described for this module is intended to provide robustness in industrial control environments where electromagnetic interference may be present.

Frequently Asked Questions

Q: What is the primary function of the 51400700-100 Data Hiway Interface?

A: The module provides communication between Honeywell Local Control Network (LCN) systems and Data Hiway networks, managing data transfer, message handling, and network coordination.

Q: Does the module perform network polling functions?

A: Yes. In supported single-branch Data Hiway configurations without a higher-priority polling device, the interface can operate as the primary Hiway polling device.

Q: What communication protocol does the interface use?

A: The module uses the Honeywell Data Hiway Token-Ring communication protocol and supports communication between LCN and Data Hiway network segments.

Q: Does the module provide time synchronization?

A: Yes. The interface can distribute synchronized time information to devices connected to the Data Hiway network.