Allen-Bradley 2711-K5A2 PanelView 550 HMI Touchscreen

Allen-Bradley 2711-K5A2 PanelView 550 is a legacy 5.5-inch monochrome operator terminal designed to provide a fixed-function HMI for DH-485 networks. It features a 5.5-inch monochrome LCD with a blue-mode backlight and a keypad (F1–F10) for input, not a touchscreen. Power is 120 VAC, and it communicates to host controllers via DH-485, with programming handled in PanelBuilder 32; the runtime application memory is about 170 KB, and it ships with the 1747-C10 cable for connectivity. Firmware support ranges from 1.00 to 4.48, and the enclosure measures roughly 14 by 11 by 8 inches with an estimated 6 lb shipping weight. This PV550 terminal sits in the PanelView Standard family and is commonly used to display process status and accept operator input, triggering PLC actions on legacy SLC 500/PLC-5 systems over DH-485.