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Key Technical Specifications
| Parameter | Value |
|---|---|
| Catalog Number | 2711-M3A18L1 |
| Product Family | PanelView 300 Micro Standard Operator Terminal |
| Display Size | 3-inch (monochrome) |
| Display Type | Monochrome transflective LCD with LED backlight |
| Display Area (W × H) | 73 × 42 mm (2.87 × 1.67 in) |
| Resolution | 128 × 64 pixels |
| Input Methods | Keypad (8 function keys, numeric keypad, cursor keys) |
| Application Memory | 240 KB Flash (application screen storage) |
| Communication Ports | 1 × RS-232 (DF1, 8-pin mini-DIN); no separate printer port on Micro |
| Communication Protocol | DF1 point-to-point (full-duplex) |
| Communication Cable | 1761-CBL-PM05 (or equivalent RS-232 cable with 8-pin mini-DIN) |
| Real-Time Clock | Battery-backed RTC (timestamps for alarms/events) |
| Backlight Life | ~100,000 hours to ½ brightness at 25 °C |
| Backlight Replacement | Non-replaceable (sealed unit) |
| Input Voltage | 18–32 V DC (nominal 24 V DC) |
| Power Consumption | ~18 W max (0.75 A @ 24 V DC) |
| Panel Cutout (W × H) | 112 × 65 mm (4.41 × 2.56 in) |
| Terminal Dimensions (W × H × D) | 140 × 197 × 82 mm (5.51 × 7.76 × 3.23 in) |
| Mounting Depth | ~64 mm (2.54 in) behind panel |
| Weight | ~0.67 kg (1.48 lb) |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Storage Temperature | −20 to 85 °C (−4 to 176 °F) |
| Humidity | 5–95% non-condensing |
| Enclosure Rating | NEMA Type 12/13, 4X (indoor use only); IP54, IP65 |
| Certifications | UL, CSA; Class I, Div 2 Groups A, B, C, D; CE, Demko |
Product Introduction
The Allen-Bradley 2711-M3A18L1 is a PanelView 300 Micro standard operator terminal with a 3-inch monochrome LCD and keypad. It provides RS-232 (DF1) communication for integration with SLC 500, MicroLogix, CompactLogix, and PLC-5 systems in legacy installations.
This HMI is chosen for compact machine interfaces where a small monochrome display with keypad input is sufficient. In field deployments, it’s commonly used on small machines, conveyors, and skids where only basic start/stop, setpoint, and alarm display are needed, and panel space is limited.
2711-M3A18L1
2711-M3A18L1
2711-M3A18L1
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No display, no backlight | 24 V DC supply missing or wiring fault | ✅ High | Measure 18–32 V DC at input terminals; check polarity and fuse | Fix 24 V DC supply and wiring before swapping HMI |
| Backlight on but screen blank | Application not loaded or corrupted | ✅ Medium | Check for “No Application” or similar message; try PanelBuilder 32 download | Reload application; verify DF1 node and baud settings |
| Keys unresponsive or intermittent | Membrane damage or contamination | ✅ Medium | Inspect keypad overlay; run key test in terminal setup | Replace keypad/membrane if keys are stuck or unresponsive |
| RS-232 (DF1) communications failing | Node address/baud mismatch or cable fault | ✅ High | Verify DF1 node, baud rate, and cable continuity; monitor with RSLinx | Correct DF1 config; replace RS-232 cable if open/short |
| Display dim or faint | Backlight aging or driver issue | ✅ Medium | Measure backlight brightness; check for dimness in bright ambient light | Replace terminal if backlight is too dim (non-replaceable) |
| Time/date lost after power-off | RTC battery depleted | ✅ High | Check RTC battery voltage; verify time reset after power cycle | Replace RTC battery (service-level repair) or replace terminal |
If you’re stuck, send photos of the terminal (including rating label), a screenshot of the blank screen or fault, and your DF1 network settings. We’ll review it before you swap the unit.
Frequently Asked Questions (FAQ)
Q: Is the 2711-M3A18L1 hot-swappable?
A: No. The 2711-M3A18L1 must be installed and removed with 24 V DC power OFF. Hot-swapping can damage the power supply and communication ports.
Q: What’s the difference between 2711-M3A18L1 and 2711-M3A19L1?
A: Both are PanelView 300 Micro monochrome terminals. M3A18L1 uses RS-232 (DF1). M3A19L1 uses RS-232 (DH-485 protocol). Choose based on your network (DF1 vs DH-485).
Q: Can I use the 2711- with ControlLogix over EtherNet/IP?
A: No. The 2711- has RS-232 (DF1) only. For EtherNet/IP, you need a PanelView Plus or newer HMI with an Ethernet port.
Q: What software do I need to program the 2711-?
A: PanelBuilder 32 is used to create and download applications to the 2711-. It runs on Windows and communicates via RS-232 (DF1).
Q: What condition are these units in, and why is pricing lower than factory?
A: We sell New Original (New Surplus) and Refurbished (tested) units. Pricing is lower because these are surplus or professionally refurbished, and the PanelView 300 Micro line is discontinued. Each refurbished unit goes through power, display, and communication tests and comes with a 1-year warranty.
Q: Can I keep my existing application when swapping a failed 2711-?
A: Yes, if the replacement is the same catalog number and you have a PanelBuilder 32 backup. Download the existing .MER runtime file to the new terminal and verify DF1 node and baud settings.
Q: What is the recommended replacement for the 2711-?
A: Rockwell’s migration path is PanelView Component C300 (2711C-…) or PanelView Plus 6 / 7 (2711P-…). Migration requires application conversion and new communication wiring (Ethernet or serial, depending on model).
