Allen-Bradley 2711-K3A17L1 Replacement for PanelView 300

Product Overview

Allen-Bradley 2711-K3A17L1 Replacement for PanelView 300: Seamless Transition & Compatible Upgrade

The Allen-Bradley 2711-K3A17L1 is a PanelView 300 Keypad Terminal from Rockwell Automation, designed for operator interface applications in industrial control systems. As this model has reached end-of-life and is no longer in active production, many facilities running legacy SLC 500, MicroLogix 1000, or MicroLogix 1100 control architectures are now facing urgent replacement decisions. TOPNLMS supplies verified 2711-K3A17L1 units from managed inventory, enabling a smooth, low-risk transition that minimizes production downtime and avoids costly system redesigns.

The 2711-K3A17L1 operates on 120V AC power and communicates via DH-485 protocol, making it natively compatible with SLC 500 series PLCs and MicroLogix family controllers. Its 3-inch monochrome display with keypad input supports up to 32 preconfigured screens and is programmed using PanelBuilder 1400e software. When replacing a failed or end-of-life unit, the replacement 2711-K3A17L1 drops directly into the existing panel cutout, reuses the original DH-485 wiring harness, and loads the existing .PBA application file without modification — eliminating the need for rewiring, new cable assemblies, or software migration.

For facilities where the original 2711-K3A17L1 is no longer available or where a platform upgrade is preferred, the PanelView Component C300 (2711C-T3M) offers a modern migration path. It supports the same DH-485 and RS-232 DF1 communication protocols, fits a comparable panel cutout, and is programmed with PanelView Component Designer — a free tool that imports legacy screen logic with minimal rework. Alongside the terminal itself, the 1761-CBL-PM02 programming cable is commonly required for initial configuration and firmware verification when connecting to a laptop or programming workstation.

In systems where the 2711-K3A17L1 interfaces with a 1747-L532 or 1747-L543 SLC 5/03 or 5/04 processor, the DH-485 network topology must be preserved during replacement. The 1761-NET-AIC Advanced Interface Converter is frequently used in these architectures to bridge DH-485 segments or extend the network to additional nodes, and should be inspected and retained during the terminal swap. If the control cabinet also includes a 1746-NI4 analog input module or 1746-OB16 digital output module, no changes to the I/O rack or backplane wiring are required — the replacement HMI communicates exclusively over the DH-485 network and does not interact directly with I/O modules.

For sites upgrading from the 2711-K3A17L1 to a newer PanelView Plus 6 platform such as the 2711P-T7C22D9P, the migration involves transitioning from DH-485 to EtherNet/IP communication. This requires adding a 1761-NET-ENI Ethernet Interface or replacing the SLC 500 processor with a CompactLogix L1 or L2 series controller. The 1769-L24ER-QB1B CompactLogix controller is a common upgrade pairing in these projects, providing native EtherNet/IP support, a compact DIN-rail footprint, and compatibility with Studio 5000 Logix Designer programming software. The 2711P-RN15S EtherNet/IP communication module can also be added to existing PanelView Plus 6 terminals to enable network connectivity without replacing the entire HMI.

Physical installation of the replacement 2711-K3A17L1 requires a panel cutout of 114 mm × 114 mm. The unit mounts from the front of the panel using the supplied mounting clips and seals to NEMA 4/4X (IP65) when properly installed. The 120V AC power connection uses a standard 3-pin terminal block on the rear of the unit. No additional power supply module or DIN-rail power converter is required for standard 120V AC panel environments. For 24V DC panel environments, the 2711-K3A5L1 variant (24V DC input) should be specified instead.

Compatibility Comparison Table

Seamless Upgrade Solutions

A complete 2711-K3A17L1 replacement or migration project typically involves several interconnected components beyond the HMI terminal itself. The 1761-CBL-PM02 programming cable is essential for connecting the terminal to a laptop running PanelBuilder 1400e to upload or verify the existing application file before commissioning the replacement unit. In DH-485 network environments, the 1761-NET-AIC Advanced Interface Converter manages multi-drop network connections and should be verified for correct termination resistance settings during the swap.

If the host controller is a 1747-L532 SLC 5/03 or 1747-L543 SLC 5/04 processor, no changes to the PLC program or I/O configuration are required — the replacement terminal communicates identically over DH-485. For facilities also managing 1746-OB16 digital output modules or 1746-NI4 analog input modules in the same rack, the I/O wiring and rack backplane remain untouched throughout the HMI replacement process.

Sites planning a broader platform migration to EtherNet/IP will typically pair the new HMI with a 1769-L24ER-QB1B CompactLogix controller and a 1761-NET-ENI Ethernet Interface to bridge legacy DH-485 devices during the transition period. The 2711P-T7C22D9P PanelView Plus 6 is the most common long-term upgrade target for operators seeking a color touchscreen interface with modern connectivity, while the 2711P-RN15S EtherNet/IP communication module enables network integration for existing PanelView Plus 6 installations already in the field.

Retrofit Guidance FAQ

Q: Can I reuse the existing DH-485 wiring when installing the replacement 2711-K3A17L1?
A: Yes. The replacement unit uses the same DH-485 RJ45 port and wiring pinout as the original. No rewiring is required. Verify termination resistance at both ends of the DH-485 segment (120Ω) before powering up.

Q: Do I need to reprogram the replacement terminal?
A: No, if you have a backup of the original .PBA application file. Connect the 1761-CBL-PM02 cable, launch PanelBuilder 1400e, and download the existing application to the replacement unit. If no backup exists, TOPNLMS can assist with application recovery guidance.

Q: Will the replacement unit fit the existing panel cutout?
A: Yes. The 2711-K3A17L1 requires a 114 mm × 114 mm cutout. The replacement unit is dimensionally identical and uses the same front-mount clip system. No panel modification is required.

Q: Is the 2711-K3A17L1 compatible with MicroLogix 1100 controllers?
A: Yes. The MicroLogix 1100 supports DH-485 communication via its built-in port, and the 2711-K3A17L1 communicates natively over DH-485. No additional interface module is required.

Q: What if I want to upgrade to a newer HMI platform instead of replacing like-for-like?
A: The PanelView Component C300 (2711C-T3M) is the recommended upgrade path. It supports DH-485 and RS-232 DF1 protocols, fits the same panel cutout, and uses free programming software. For a full EtherNet/IP migration, the PanelView Plus 6 series with a CompactLogix controller is the standard Rockwell Automation upgrade path.

Q: What communication protocols does the 2711-K3A17L1 support?
A: DH-485 (primary) and RS-232 DF1 (point-to-point). It does not support EtherNet/IP or DeviceNet natively.

Warranty Assurance

Every 2711-K3A17L1 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes functional verification including power-on testing, display and keypad response checks, and communication port integrity testing. Units are shipped in anti-static packaging with protective foam inserts to prevent transit damage.

In the event of a confirmed defect within the warranty period, TOPNLMS provides a direct replacement unit at no additional cost, with priority processing to minimize your downtime. Our technical support team is available to assist with installation questions, application file recovery, and compatibility verification before and after delivery.

We maintain standing inventory of the 2711-K3A17L1 and related PanelView 300 series components to support urgent replacement requirements. Orders confirmed before 3:00 PM CST are typically processed for same-day dispatch. International shipping is available to most destinations with full export documentation provided.

For volume procurement, OEM partnerships, or scheduled maintenance contracts requiring guaranteed stock allocation, please contact our sales team directly to discuss pricing and lead time commitments.