Description
- Model: Allen-Bradley 2711-K10C1
- Brand: Allen-Bradley / Rockwell Automation
- Series: PanelView 1000 Standard
- Core Function: High-resolution operator interface for machine control and monitoring
- Product Type: HMI (Human Machine Interface) – Keypad Operated
- Key Specs: 10.1-inch Color Active Matrix TFT DH+ (Data Highway Plus) RS-232 Printer Port
- Display Type: Color Active Matrix TFT
- Display Size: 10.1 inches (Diagonal)
- Resolution: 640 x 480 pixels
- Operator Input: Stainless-steel domed Keypad (F1-F16 Function keys)
- Communication Port: DH+ (Data Highway Plus)
- Auxiliary Port: RS-232 (for printing/alarms)
- Input Voltage: 85 – 264 V AC (47 – 63 Hz)
- Memory: 310 KB application flash memory
- Backlight: Field-replaceable halogen lamp (2711-NL1)
- Enclosure Rating: NEMA 4X (Indoor use), IP65
- Programming Software: PanelBuilder32
ALLEN BRADLEY 2711-K10C1
Application Scenarios & Pain Points
The 2711-K10C1 is a workhorse in older plants running SLC 5/04 or PLC-5 systems. Its reliance on the DH+ protocol makes it indispensable because modern Ethernet-based HMIs can’t “talk” to these older racks without expensive gateways. When the backlight dims or the keypad membrane cracks from repeated use, operators lose visibility into the process. Replacing this unit with a modern alternative often requires a massive engineering effort to rewrite the communication architecture—making a “like-for-like” spare the most cost-effective solution.
Typical Application Scenarios:
- Automotive Assembly: Used on legacy body-shop lines where DH+ was the standard for real-time interlocking.
- Food & Beverage: Managing batching systems where stainless-steel tactile keys are preferred over touchscreens for gloved operators.
- Water Treatment: Controlling remote pump stations where the rugged NEMA 4X rating protects against humidity.
- Material Handling: Interfacing with large palletizers in warehouses that haven’t yet been upgraded to ControlLogix.
Case Study: The “Blind” Bottling Line
Background: A regional brewery was running its entire packaging line via an Allen-Bradley PLC-5 system. The primary interface was a 2711-K10C1.
The Problem: On a Friday afternoon, the HMI screen went completely dark. While the PLC was still running, the operators couldn’t see the tank levels or change the line speed. Because the system used DH+, they couldn’t just plug in a standard industrial PC. The local distributor told them the PanelView 1000 was “obsolete” and suggested a $15,000 system-wide upgrade with a 4-week lead time.
The Solution: We provided a tested 2711-K10C1 from our inventory. Since we keep these in a climate-controlled environment, the screen was crisp and the keypad was fully responsive. We shipped it via “Next Flight Out.”
The Result: The brewery received the unit Saturday morning. They swapped the memory card from the old unit into the new one, and the line was back up for the weekend shift. Total cost was less than 20% of the proposed upgrade price.
Compatible Replacement Models
| Original Model | Replacement Model | Compatibility | Main Difference | Effort Level |
| 2711-K10C1 | 2711-T10C1 | ⚠️ Software Compatible | Touchscreen instead of Keypad | Medium (Screen redesign) |
| 2711-K10C1 | 2711-K10C15 | ⚠️ Hardware Compatible | ControlNet instead of DH+ | High (Network change) |
| 2711-K10C1 | 2711P-K10C4D8 | ❌ Incompatible | PanelView Plus (Ethernet) | Very High (Migration) |
SOP & Quality Transparency
HMIs are sensitive electronics. We don’t just “power them on”; we stress-test them to ensure they survive the harsh electrical noise of your factory floor.
- Display Burn-in: We run the screen at 100% brightness for 24 hours to check for pixel degradation or backlight flickering.
- Keypad Tactile Test: Every single key (F1 through F16, numeric, and navigation) is pressed and verified for electrical continuity. We ensure the membrane hasn’t become brittle or unresponsive.
- DH+ Handshake: We connect the unit to a live SLC 5/04 rack via a 1770-CD cable to verify that the Data Highway Plus port can read and write data bits without dropping packets.
- Memory Card Verification: We test the PCMCIA slot to ensure it can successfully load and save .PVA application files.
- Gasket Inspection: We inspect the rear mounting gasket. If it shows signs of compression set or dry rot, we replace it to ensure your NEMA 4X rating remains intact.
ALLEN BRADLEY 2711-K10C1
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relation to 2711-K10C1 | Quick Check |
| Screen is dark, “Comm” LED is Green | Backlight Failure | ✅ High | Shine a flashlight at the screen; if you see graphics, replace the 2711-NL1 lamp. |
| “Comm” LED is Red (Solid) | DH+ Port Hardware Fault | ✅ High | Check the swing-arm connector; if it’s tight, the internal ASIC is likely dead. |
| “Comm” LED is Red (Flashing) | Node Address Conflict | ⚠️ Medium | Ensure no two devices on the DH+ blue hose have the same Octal address. |
| “Fault” LED is Red | Firmware / RAM Error | ✅ High | Attempt a factory reset (Hold specific keys during boot). If it persists, replace unit. |
Systems-Thinking Note: ❗ Check your Blue Hose. Before replacing a “faulty” HMI, check the 82-ohm or 150-ohm termination resistor at the ends of your DH+ network. In my experience, a missing resistor causes “Ghost Faults” that look like a broken HMI but are actually just network reflections.
Additional Inventory Models
Maintaining a legacy Allen-Bradley system? We have these parts ready to go:
- AB 1747-L542 SLC 5/04 CPU 32K
- AB 1771-ALX PLC-5 Adapter Module
- AB 2711-T10C15 PanelView 1000 Touch ControlNet
- AB 1746-IB32 32-Point Digital Input
- AB 1746-OW16 16-Point Relay Output
- AB 2711-K10C1 (This Model)
- AB 1761-NET-AIC Interface Converter
- AB 1784-PCMK DH+ PC Card
For current pricing and volume availability, visit www.newplcdcs.com.
