Description
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Product Introduction
When your Allen-Bradley SLC 500/MicroLogix small and medium-sized PLC control system needs a reliable on-site human-machine interaction unit to realize convenient on-site equipment operation and real-time process monitoring, this terminal acts as the core HMI control hub.
It is a classic keypad-type industrial operator terminal from Allen-Bradley PanelView Standard 600 series, equipped with a 5.7-inch color TFT LCD display with 320×234 resolution, using a fully sealed membrane keypad input mode, which can effectively prevent dust and liquid splashing in industrial sites. It integrates RS-232 communication interface, natively supports DH-485 and DF1 full-duplex communication protocols, and can seamlessly connect with Allen-Bradley SLC 500, MicroLogix and CompactLogix series PLCs. Its CCFL backlight has a service life of up to 50,000 hours and supports on-site replacement without disassembling the whole machine. The NEMA 12/13 sealed housing fully adapts to harsh industrial environments, making it a core replacement part for Rockwell old-generation automation system maintenance and retrofit projects.
2711-K6C5
2711-K6C5
2711-K6C5
2711-K6C5
2711-K6C5
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2711-K6C5 |
| Product Type | PanelView Standard 600 Keypad HMI Terminal |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Country of Origin | USA |
| Display | 5.7-inch color TFT LCD |
| Resolution | 320 × 234 pixels |
| Active Display Area | 115 × 86 mm (4.54 × 3.4 in) |
| Input Method | Sealed membrane keypad (10 function keys + numeric keypad + navigation arrows) |
| Communication Interfaces | 1×RS-232 |
| Supported Protocols | DH-485, DF1 Full-Duplex |
| Runtime Memory | 190 KB |
| Non-Volatile Application Memory | 240 KB |
| Backlight | CCFL, 50,000 hours service life, field-replaceable (model 2711-NL3) |
| Power Supply | 85–264 V AC, 47–63 Hz |
| Enclosure Rating | NEMA Type 12/13, IP54 |
| Operating Temperature Range | 0°C ~ +55°C |
| Storage Temperature Range | -40°C ~ +85°C |
| Installation Method | Standard industrial control cabinet panel mounting |
| Dimensions | 167 × 266 × 106 mm |
| Net Weight | 1.95 kg |
| Certifications | UL, CSA, CE |
Field Application & Technical Pitfalls
Critical Industrial Scenarios
- **Small and Medium-Sized Packaging Production Line On-Site Operation Station: Acts as the core on-site operation and monitoring unit for packaging production line PLC systems, realizing convenient on-site equipment parameter adjustment and production state monitoring, improving the operation efficiency of the packaging line.
- **Food Processing Production Line HMI Control Station: Delivers reliable dust-proof and splash-proof performance for food processing production line control systems, adapting to frequent cleaning and high-humidity food production environments, meeting the long-term stable operation requirements of food production.
- **Water Treatment Plant Local Control Panel: Adapts to humid and dusty water treatment workshop environments, providing stable on-site human-machine interaction support for the local control system of the water treatment plant.
Non-Negotiable Technical Pitfalls
- ⚠️ Bold Warning 1: Never arbitrarily use non-matching non-standard communication cables for connection. The third RS-232 channel will experience data transmission errors that cause the HMI to lose communication with the PLC.
- ⚠️ Bold Warning 2: Skipping the pre-commissioning full keypad function test will leave you with hidden operation dead zones. This unit must confirm all keypad keys operate normally before putting into operation.
- ⚠️ Bold Warning 3: Do not arbitrarily modify the PLC communication station address parameters during system operation. Unreasonable parameter changes will cause the HMI to fail to connect to the PLC, resulting in the loss of on-site operation function.
A large food processing plant maintenance team once swapped a 2711-K6C5 HMI and skipped the keypad function test. The hidden poor contact of one function key caused the on-site operator to fail to trigger the emergency stop operation in time, resulting in a 1-hour partial production line shutdown.
Quality Control (QC) SOP & Transparency
- Inbound Verification: Cross-check the OEM serial number against Rockwell’s official PanelView part registry, confirm the part number 2711-K6C5 matches the factory label, and inspect no damage or deformation on all communication and power connectors.
- Live Rig Testing: Power the unit in a calibrated Rockwell PanelView test bench, connect to SLC 500 PLC for communication test, and confirm full 2-hour continuous stable operation.
- Parameter Testing: Verify all keypad keys operate correctly, confirm DH-485 communication function meets factory specifications, and validate the display and backlight functions work properly.
- Final QA & Packaging: Seal the tested HMI in a static-shielding anti-static bag, attach a unique QC passed serial label, and nest it in foam padding inside a rigid industrial shipping carton.
Frequently Asked Questions (FAQ)
- Can I hot-swap this HMI while the PLC system is running? No. You must first confirm that the PLC system is in normal operation state and the on-site equipment is in safe state before powering off and replacing the HMI, otherwise you will trigger unexpected on-site operation function loss risks.
- What exact systems is this HMI compatible with? It works natively with Allen-Bradley SLC 500, MicroLogix and CompactLogix series PLC systems, and cannot be directly connected to non-DH-485 protocol PLC systems without custom protocol conversion.
- How long is the standard warranty for this new surplus unit? 12 months from delivery. It covers all manufacturing defects, but does not extend to units damaged by miswiring, improper communication parameter configuration, or overvoltage in the field.
- How do I tell a genuine OEM unit apart from a refurbished clone? Genuine Allen-Bradley 2711-K6C5 HMIs have a laser-etched part number on the housing, not a printed sticker. Clone units almost always fail the full DH-485 communication and full keypad function test.
- What is the typical lead time for shipment? In-stock units ship within 48 hours. If you require official Rockwell factory HMI performance test documentation, add 2 extra business days to the turnaround window.
- Can this HMI replace the older PanelView 600 legacy unit? Well, technically it fits the same standard control cabinet panel mounting dimensions, but you must confirm the HMI project version fully matches the target PLC system before replacement to ensure 100% system compatibility.
