Allen-Bradley 2711-B5A2 PanelView 550 HMI Terminal is a 5.5-inch monochrome operator interface with keypad and touchscreen input, part of the PanelView 550 family. The display is a 256×128 pixel LCD and the unit communicates with PLCs over the DH485 serial network; it operates from 85–264 VAC at 50/60 Hz. Firmware release FRN 4.48 accompanies this model, making it suitable for compact, panel-mounted HMI applications on SLC/PLC systems such as packaging, conveyors, and machine control panels.
