1770-KF2 Allen Bradley | Data Highway Plus (DH+) Communication Interface

Product Overview

The Allen Bradley 1770-KF2 functions as a high-performance communication interface that bridges the gap between asynchronous serial devices and the Data Highway Plus (DH+) or Data Highway (DH) networks. This module allows computers, intelligent terminals, or competitive PLC hardware to exchange data with Allen Bradley PLC-2, PLC-3, and PLC-5 processors. We supply this unit as 100% Brand New and Factory Original, manufactured with precision in Switzerland to ensure flawless protocol conversion and timing for mission-critical legacy industrial networks.

Technical Specifications

The 1770-KF2 utilizes specialized internal logic to handle high-speed packet switching and serial-to-token-passing conversion:

Engineering Advantages

• Universal Serial Integration: The module supports both RS-232-C and RS-422 serial standards. This versatility allows engineers to connect modern PC-based SCADA systems or legacy specialized terminals to an existing DH+ backbone without requiring multiple interface types.

• Protocol Transparency: The 1770-KF2 manages the complex token-passing logic of the Data Highway Plus network internally. It presents a simple serial interface to the host device, removing the need for custom network-layer coding on the serial side.

• Compact Mounting Footprint: With a thickness of only 2.2 cm, the module slides easily into tight control cabinet spaces. The slim profile facilitates the modernization of older panels where DIN rail or rack space remains at a premium.

• Swiss-Engineered Signal Integrity: High-quality Swiss manufacturing ensures superior electromagnetic shielding and timing accuracy. This precision minimizes data packet retries and prevents communication timeouts in high-interference environments near large variable frequency drives (VFDs).

• Bridge to Modern SCADA: By providing a stable DH+ entry point, the 1770-KF2 allows modern data logging software to access real-time registers in legacy PLC-5 systems. This enables digital transformation projects without the immediate need to replace functional but older PLC hardware.

FAQs

• Is this 1770-KF2 unit 100% Brand New?

  Yes. We guarantee this communication module is 100% Brand New and ships in its original factory packaging. Each unit retains its original Swiss-manufactured quality, ensuring the internal capacitors and communication chips provide their full engineered lifecycle.

• Can the 1770-KF2 operate on both DH and DH+ networks?

  Yes. You can configure the module for either Data Highway (DH) or Data Highway Plus (DH+) via internal jumper settings or dip switches. Always consult the technical manual to match your specific network's baud rate and station addressing requirements.

• Does the module require an external power supply?

  The 1770-KF2 requires a specific external power source to operate its internal protocol conversion circuitry. Ensure your installation includes the correct Allen Bradley power adapter or an equivalent regulated supply to maintain signal stability on the DH+ trunk.

• What is the maximum serial cable length supported?

  For RS-232-C connections, we recommend keeping the cable length under 15 meters (50 feet) to prevent signal degradation. If your application requires longer distances between the module and the host device, utilize the RS-422 interface for extended reach and higher noise immunity.