Allen-Bradley 1784-PCM5 PLC-5 DH+ Communication Cable

Product Overview

The Allen-Bradley 1784-PCM5 serves as a high-performance Data Highway Plus (DH+) communication cable, bridging the gap between portable programming terminals and the PLC-5 processor environment. It interfaces directly with 1784-PCMK PCMCIA cards to establish a stable, high-speed link for logic uploads, downloads, and online monitoring. Despite its legacy status in the global market, we supply this unit as 100% Brand New and Original, ensuring critical connectivity for industrial plants that maintain reliable PLC-5 infrastructure.

Technical Specifications

The 1784-PCM5 utilizes industrial-grade shielding to maintain signal integrity across Data Highway Plus and Remote I/O networks.

Engineering Advantages

• Optimized Data Throughput: This cable supports communication speeds up to 230 kbps. It facilitates rapid data synchronization between the programming workstation and the PLC backplane, reducing the time required for large program transfers.

• Remote I/O Integration: Beyond standard DH+ messaging, the 1784-PCM5 enables Remote I/O scanner capabilities. This allows engineers to configure and troubleshoot remote racks directly from a laptop, eliminating the need for local hardware interfaces at every chassis.

• Built-in Diagnostic Integrity: The cable architecture supports Loopback Diagnostics Tests. This feature allows field technicians to verify cable and card health instantly, identifying physical layer faults before they impact production uptime.

• Secure Industrial Connection: The RJ45 connector ensures a positive mechanical lock into the communication port. This prevents accidental disconnections caused by industrial vibration or movement in the field during critical programming sessions.

FAQs

• Which PC cards work with the 1784-PCM5 cable? This cable connects specifically to the 1784-PCMK Series A or Series B PCMCIA cards. It enables these cards to interface with the DH+ ports on PLC-5 controllers, SLC 5/04 processors, or 1771-ASB remote I/O adapter modules.

• Does this cable support 115.2 kbps and 57.6 kbps rates? Yes. The 1784-PCM5 automatically handles the standard DH+ baud rates of 57.6 kbps, 115.2 kbps, and the maximum 230 kbps, provided the connected hardware and software drivers support these speeds.

• How do I troubleshoot a connection failure using this cable? First, perform the Loopback Diagnostics Test through the RSLinx configuration utility. If the test fails, check the RJ45 pins for debris and ensure the PCMCIA card seats fully in the host computer slot.

• Is this a "New-Open-Box" or used item? We guarantee this 1784-PCM5 is 100% Brand New. It arrives in its original factory packaging, ensuring the internal conductors and shielding remain free from the wear and internal fractures common in used legacy cables.