Description
Product Description
The HONEYWELL TK-PRS021 is a high-performance, rack-mountable Profibus Slave Communication Module designed for seamless integration into complex industrial automation networks. This module acts as a critical gateway, enabling Honeywell’s versatile ControlEdge™ series of PLCs and Remote Terminal Units (RTUs) to communicate on the widely adopted PROFIBUS DP (Decentralized Peripherals) fieldbus network. By implementing the HONEYWELL TK-PRS021 module, users can connect a vast array of PROFIBUS-compatible sensors, actuators, and other slave devices directly to a Honeywell master controller, facilitating efficient and deterministic data exchange. The robust design of the HONEYWELL TK-PRS021 ensures reliable operation in demanding industrial environments, making it an essential component for system expansion and legacy device integration. When planning a system that requires robust fieldbus communication, the HONEYWELL TK-PRS021 provides a certified and reliable solution.
Product Parameters
- Communication Protocol: PROFIBUS DP (DP-V1) slave.
- Supported Masters: Compatible with PROFIBUS DP-V1 master class 1 and 2.
- Integration: Designed for use with Honeywell ControlEdge PLC and RTU racks.
- Data Transfer Rates: Auto-baud detection supporting standard PROFIBUS DP rates from 9.6 kbps to 12 Mbps.
- Module Addressing: Address set via DIP switches on the module front.
- Diagnostics: Comprehensive diagnostic LEDs for power, module status, and network communication (RUN, BUS ERR, SF).
- Power Supply: Typically powered from the PLC/RTU backplane.
- Environmental Rating: Designed for industrial operating temperatures and conditions.
- Certifications: Compliant with relevant industrial standards and PROFIBUS certification.
Advantages and Features
- Seamless Honeywell Integration: The module is engineered specifically for the ControlEdge platform, ensuring guaranteed compatibility and simplified configuration within Honeywell’s engineering software ecosystem.
- Extended Network Capabilities: Enables connection to thousands of PROFIBUS field devices, dramatically expanding the I/O and control reach of the host PLC/RTU without point-to-point wiring.
- High Reliability & Diagnostics: Built with industrial-grade components and featuring clear, multi-status LEDs for quick fault identification and reduced mean-time-to-repair (MTTR).
- Simplified Engineering: The HONEYWELL TK-PRS021 is represented as a standard hardware component within the ControlEdge configuration tools, streamlining the design and documentation process.
- Legacy System Migration: Ideal for modernizing existing installations with PROFIBUS infrastructure, allowing for a phased approach to system upgrades.
Application Cases in Application Fields
- Oil & Gas (Upstream/Midstream): Integrating wellhead PROFIBUS valve manifolds and flow computers into a centralized ControlEdge RTU for supervisory control and data acquisition (SCADA).
- Water/Wastewater Treatment: Connecting distributed PROFIBUS devices such as variable frequency drives (VFDs) on pumps, flow meters, and analyzer instruments to a central ControlEdge PLC for process control.
- Manufacturing & Factory Automation: Linking motor starters, I/O blocks, and operator stations on a factory floor to a Honeywell PLC for coordinated machine control and production line automation.
- Power Generation: Incorporating boiler and turbine auxiliaries equipped with PROFIBUS interfaces into a broader plant control system managed by Honeywell controllers.
Comparisons with Competing Products
Compared to universal third-party PROFIBUS slave modules or gateways, the HONEYWELL TK-PRS021 offers distinct advantages for users within the Honeywell ecosystem. While generic modules may offer broader brand compatibility, they often require additional configuration effort, may not be fully validated by the PLC manufacturer, and could lack seamless software integration. Competing modules from other major PLC vendors (e.g., Siemens, Rockwell Allen-Bradley) are proprietary to their respective platforms and not compatible with Honeywell racks. The HONEYWELL TK-PRS021 provides a vendor-approved, plug-and-play solution with guaranteed performance and full support from Honeywell, reducing integration risk and lifecycle support costs for dedicated Honeywell system users.
Selection Suggestions and Precautions
- Platform Verification: Confirm that your host controller is a Honeywell ControlEdge PLC or RTU model that supports the Profibus Communication Module in its rack configuration.
- Network Planning: Ensure the intended PROFIBUS network topology, total cable length, and number of devices comply with PROFIBUS DP specifications. The TK-PRS021 is a slave device and requires a PROFIBUS DP master elsewhere on the network.
- Configuration Requirements: Account for the need for Honeywell’s ControlEdge engineering software (e.g., ControlEdge Engineer) to configure the module’s parameters and data exchange map within the controller project.
- Address Setting: Carefully plan the PROFIBUS node address for each module and set it correctly using the onboard DIP switches to avoid network conflicts.
- Spare Parts Strategy: For critical applications, consider purchasing a spare HONEYWELL TK-PRS021 module to minimize downtime in the event of a hardware failure.

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