Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Display Type | Monochrome LCD blue mode |
| Display Size | 5.5 inches |
| Display Area | 120 × 60 mm (4.75 × 2.38 in) |
| Resolution | 256 × 128 pixels |
| Operator Input | Analog resistive touchscreen (128 touch cells) |
| Touch Actuation | 1 million presses |
| Application Memory | 170 KB runtime; 240 KB nonvolatile |
| Communication Ports | ControlNet; RS-232 printer port |
| Input Voltage | 18–32 V DC (24 V DC nominal) |
| Power Consumption | Approx. 18–20 W max |
| Backlight | LED, 100,000 hour life |
| Enclosure Rating | NEMA Type 12/13, 4X (indoor), IP54, IP65 |
| Configuration Software | PanelBuilder32 |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Memory Card | Compatible with 2711-NM232 |
4. Product Introduction
The Allen-Bradley 2711-T5A15L1 is a PanelView 550 Standard operator terminal. It features a 5.5-inch monochrome LCD display (blue mode) with 256 × 128 resolution and an analog resistive touchscreen containing 128 touch cells.
The terminal is DC-powered (18–32 V DC) and communicates via a ControlNet port for connection to ControlLogix or PLC-5 systems, plus an RS-232 printer port for alarm logging. It provides 170 KB of application runtime memory and 240 KB of nonvolatile memory. Applications are developed with PanelBuilder32 software. The “L1” suffix indicates DC power; the “15” indicates ControlNet communication. This model is discontinued.

2711-T5A15L1

2711-T5A15L1

2711-T5A15L1
5. Installation & Configuration Guide
Stage 1: Pre-Installation Preparation (10–15 min) ⚠️ Safety First: Disconnect all power sources. Verify the panel cutout matches the required dimensions (approximately 125 × 158 mm). Wear an ESD wrist strap. Tools Required: ESD strap, screwdriver, multimeter, ControlNet cable/taps, RS-232 printer cable if used. Data Backup: Upload the existing application from the old terminal using PanelBuilder32 if possible. Record the ControlNet node address and any printer settings.
Stage 2: Removing the Old Terminal (8–12 min)
- Confirm power is removed.
- Disconnect the ControlNet cable and RS-232 printer cable. Label both.
- Disconnect DC power wiring.
- Release the mounting hardware and remove the terminal from the panel. ⚠️ Retain the old terminal until the replacement is fully tested and the application is verified.
Stage 3: Installing the New Terminal (10–15 min)
- Verify the unit is marked 2711-T5A15L1 and note the series letter.
- Insert the terminal into the panel cutout from the front and secure with the mounting hardware.
- Connect 18–32 V DC power (observe polarity and grounding).
- Connect the ControlNet network cable and, if required, the RS-232 printer cable. Ensure proper ControlNet taps and terminators.
- Ensure the front gasket is properly seated for the enclosure rating. Self-Checklist: [ ] Correct cutout size [ ] Mounting secure [ ] Power polarity correct [ ] ControlNet connections and terminators correct.
Stage 4: Power-On & Testing (15–30 min)
- Apply DC power. Observe status indicators.
- Connect a programming PC running PanelBuilder32 and download or verify the application.
- Confirm ControlNet communication with the controller and verify all screens and touch response.
- Test any printer functionality if used.
- Place the system in normal operation and monitor for faults. ⚠️ Troubleshooting Note: A blank display usually indicates power polarity or backlight issues. No ControlNet communication is most often caused by an incorrect node address, missing terminators, or a network media problem.
6. Frequently Asked Questions (FAQ)
Q: Can the 2711-T5A15L1 be hot-swapped? No. Always remove DC power before installing or removing the terminal. Power must be off during all wiring changes.
Q: Is the 2711-T5A15L1 still in production? No. The PanelView Standard (including the 550 series) was discontinued. Remaining units are new surplus or refurbished. For new designs, migrate to PanelView Plus 7 or PanelView 5000 series terminals.
Q: What does the catalog number mean? T = Touchscreen only, 5 = 5.5-inch display, A = Standard, 15 = ControlNet communication, L1 = DC power (18–32 V DC).
Q: What software is required? PanelBuilder32 is used to develop and download applications. Compatible versions support the firmware range typically found on these terminals.
Q: Why is the price lower than historical OEM list price? These are genuine surplus units from excess inventory. They are original Allen-Bradley terminals that have never been installed in a running system, but they are no longer available through standard Rockwell channels. Functional testing and warranty are provided.
Q: Is the backlight replaceable? Yes on most series. The replacement backlight kit is typically catalog number 2711-NL1. Confirm compatibility with the specific series of your terminal before ordering.
Q: What memory card is supported? The 2711-NM232 memory card is commonly used for application storage and transfer.

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