Allen-Bradley PanelView Plus 400 Modules – 2711P-K4M20D

Technical Dossier

Product Details And Specifications

Allen-Bradley PanelView Plus 400 Series Technical Notes

The Evolution of PanelView Plus 400 Architecture

The PanelView Plus 400 was introduced as part of Rockwell Automation's second-generation PanelView Plus platform, succeeding the original PanelView 300 and PanelView 550 series. The architecture is built around a Windows CE-based operating system running FactoryTalk View Machine Edition (ME), enabling structured tag-based communication with Allen-Bradley PLCs via DH-485, DF1, DeviceNet, and EtherNet/IP protocols.

Early revisions (Series A) used a CCFL backlight and a resistive touchscreen or keypad-only interface. Later revisions introduced LED backlighting for extended service life and improved display brightness. The 2711P-K4M20D specifically is a keypad-only unit with a monochrome STN display, 2 MB application memory, and RS-232/RS-422/RS-485 serial communication — a configuration optimized for cost-sensitive machine-level control panels where touch interaction is not required.

As of 2016, Rockwell Automation placed the PanelView Plus 400 and 600 series into End-of-Life (EOL) status, with the PanelView Plus 7 Standard (2711R series) designated as the recommended migration path. Despite EOL status, the installed base remains extensive, and spare part demand continues across maintenance, repair, and overhaul (MRO) operations globally. For facilities operating under long-term asset management plans — particularly in nuclear, oil & gas, and chemical processing — lifecycle extension sourcing is the primary procurement strategy.

PanelView Plus 400 Full Catalog & Functionalities (SKU List)

The following catalog covers the primary SKUs within the Allen-Bradley PanelView Plus 400 series. Models are classified by interface type (keypad vs. touch), display type (monochrome vs. color), and communication configuration.

Keypad Units — Monochrome STN Display

• 2711P-K4M20D: 4-inch monochrome keypad HMI, 2 MB memory, RS-232/422/485, DH-485, DC power input.
• 2711P-K4M20A: 4-inch monochrome keypad HMI, 2 MB memory, RS-232/422/485, DH-485, AC power input.
• 2711P-K4M5A8: 4-inch monochrome keypad, 2 MB memory, EtherNet/IP communication port, AC power.
• 2711P-K4M5D8: 4-inch monochrome keypad, 2 MB memory, EtherNet/IP communication port, DC power.
• 2711P-K4M8A2: 4-inch monochrome keypad, 2 MB memory, DH-485/RS-232 dual port, AC power.

Touch Screen Units — Monochrome STN Display

• 2711P-T4M20D: 4-inch monochrome resistive touch HMI, 2 MB memory, RS-232/422/485, DC power.
• 2711P-T4M20A: 4-inch monochrome resistive touch HMI, 2 MB memory, RS-232/422/485, AC power.
• 2711P-T4M5A8: 4-inch monochrome touch, 2 MB memory, EtherNet/IP port, AC power.
• 2711P-T4M5D8: 4-inch monochrome touch, 2 MB memory, EtherNet/IP port, DC power.

Touch Screen Units — Color TFT Display

• 2711P-T4C20D: 4-inch color TFT touch HMI, 2 MB memory, RS-232/422/485, DC power input.
• 2711P-T4C20A: 4-inch color TFT touch HMI, 2 MB memory, RS-232/422/485, AC power input.
• 2711P-T4C5A8: 4-inch color TFT touch, 2 MB memory, EtherNet/IP communication, AC power.
• 2711P-T4C5D8: 4-inch color TFT touch, 2 MB memory, EtherNet/IP communication, DC power.

Accessories and Replacement Components

• 2711P-RN6: EtherNet/IP plug-in communication module for PanelView Plus 400/600 series.
• 2711P-RN15S: DeviceNet plug-in communication module for PanelView Plus compact series.
• 2711P-RDK7: OEM replacement display kit for PanelView Plus 400 series units.
• 2711P-RP8D: Replacement DC power supply module for PanelView Plus 400/600 series.
• 2711P-RP8A: Replacement AC power supply module for PanelView Plus 400/600 series.
• 2711P-RB5: Replacement CCFL/LED backlight assembly for PanelView Plus 400 series.

Sourcing Hard-to-Find & Obsolete PanelView Plus 400 Parts

• Stocking of new-surplus and factory-refurbished units sourced from decommissioned OEM lines and controlled warehouse environments.
• Component-level repair capability for display assemblies, power supply boards, and communication modules.
• Cross-referencing of discontinued catalog numbers to current Rockwell replacement equivalents (e.g., 2711R series migration mapping).
• Long-term supply agreements for MRO customers requiring guaranteed availability over multi-year maintenance contracts.

Quality Control for the PanelView Plus 400 Range

Each PanelView Plus 400 unit processed by DriveKNMS undergoes a structured inspection and functional verification protocol prior to dispatch:

• Power-on test: Unit powered via rated DC or AC input; boot sequence and OS integrity verified against FactoryTalk View ME baseline.
• Display verification: Full-screen pixel test for dead pixels, backlight uniformity, and contrast calibration on STN/TFT panels.
• Keypad/touch interface test: All function keys and touch zones mapped and verified for response accuracy.
• Communication port test: RS-232, RS-422, RS-485, and EtherNet/IP ports tested for signal integrity using protocol analyzers.
• Memory integrity check: Application memory (2 MB) verified; firmware version confirmed and updated where applicable.
• Environmental inspection: Enclosure, bezel, and connector condition assessed; units with physical damage flagged for refurbishment or parts-only classification.