Honeywell TC-TCNH ControlNet Interface Module

This ControlNet interface module connects Honeywell Experion systems to ControlNet networks seamlessly. The TC-TCNH enables high-speed data exchange between the Experion controller and remote I/O devices. It supports both scheduled and unscheduled communication for flexible control applications. System engineers choose this module for its deterministic performance and robust network integration. Its single-slot design fits into standard Experion chassis positions.

Technical Specifications Summary

ControlNet Architecture and Communication Capabilities

The module implements the ControlNet protocol for deterministic industrial communication. It supports both scheduled and unscheduled communication modes for flexibility. The TC-TCNH handles scheduled data exchanges at configurable update rates from 2 to 100 ms. Unscheduled messaging supports configuration, diagnostics, and acyclic data transfers. This architecture ensures time-critical I/O updates while accommodating less time-sensitive tasks. The module automatically manages network scheduling and bandwidth allocation. It handles up to 1024 bytes of input and 1024 bytes of output data per connection. This comprehensive communication suite supports diverse control applications effectively.

Deterministic Performance and Scheduling

For time-critical applications, the module provides deterministic communication performance. Scheduled communication guarantees data delivery within predetermined time intervals. The TC-TCNH configures update rates to match application speed requirements. Engineers set individual schedules for each I/O connection independently. The module synchronizes its schedule with the overall ControlNet network timing. This synchronization ensures coordinated data exchange across multiple controllers and devices. Deterministic performance suits applications requiring predictable response times like motion control.

Network Integration and Physical Connectivity

The module connects to ControlNet networks through a standard BNC coaxial connector. This connector provides reliable signal transmission over coaxial cable. The TC-TCNH supports cable runs up to 1000 meters per segment with repeaters. It accommodates up to 99 nodes on a single ControlNet network. The module includes built-in network termination for signal integrity. A separate RS-232-C port supports configuration and diagnostic functions. LED indicators display network activity, communication status, and fault conditions clearly. These features simplify installation and network verification.

Data Handling and Buffer Management

The module manages data exchange efficiently for both scheduled and unscheduled traffic. It maintains dedicated buffers for cyclic I/O data and acyclic messaging. The TC-TCNH prioritizes scheduled data to meet deterministic timing requirements. It queues unscheduled messages for transmission during available network bandwidth. Users can configure buffer sizes and priority settings through software. The module also supports peer-to-peer communication between controllers. This data management ensures reliable and timely information exchange.

Diagnostic Features and Configuration Tools

The module offers comprehensive diagnostic capabilities for network troubleshooting. It monitors network health, node status, and communication errors continuously. The TC-TCNH provides diagnostic data through its RS-232-C port and network interface. Users access error counters, network statistics, and device status information. The module also supports online configuration and parameter adjustments. LED indicators display power, network activity, and fault conditions clearly. These diagnostic features facilitate proactive maintenance and rapid problem resolution.

Mechanical Construction and Environmental Specifications

The module occupies a single slot in the Experion I/O rack. It measures 130 millimeters high, 40 millimeters wide, and 120 millimeters deep. The unit weighs 0.35 kilograms for convenient installation. Power consumption draws 4 watts from the +5 V DC backplane supply. The module inserts directly into the chassis without special tools. Operating temperature ranges from 0 °C to 55 °C for control rooms. Storage conditions extend from -40 °C to 85 °C for shipping. Humidity tolerance covers 5% to 95% without condensation affecting operation.