Allen-Bradley 2711-K3A10L1 PanelView 300 HMI Display

The Allen-Bradley 2711-K3A10L1 PanelView 300 is a compact, legacy HMI terminal that pairs a 3-inch LCD display with an eight-function keypad and built-in DeviceNet communications, plus an RS-232 printer port for local reporting. Powered by 24 V DC and part of the Series A PanelView Standard 300 family, it is designed for industrial machines needing a small-footprint operator interface on legacy control systems. Memory comprises 240 KB of nonvolatile storage and 170 KB of RAM to hold configuration, screens, and runtime data, supporting straightforward status displays, setpoint entry, and basic control screens on older Allen‑Bradley PLCs. This model is categorized as a PanelView 300 Monochrome Terminal with keypad and DeviceNet/RS-232 connectivity, reinforcing its role in compact automation racks and line-level HMI tasks. Typical uses include displaying process status, alarms, and simple input tasks—such as start/stop commands or data entry—via the keypad, while DeviceNet provides a simple PLC network path for tag reads and writes, and the RS-232 port supports printer output without external adapters. The display uses an LCD with an LED backlight for readability in factory environments, and the 24 VDC operation supports rugged installation in harsh conditions.