Allen-Bradley 2711-B5A3 Human Machine Interface Panel

Allen-Bradley 2711-B5A3 PanelView 550 is a 5.5-inch monochrome HMI terminal with keypad and touchscreen input, designed to run PanelView Standard applications for SLC 500, PLC-5, and MicroLogix controllers. It delivers a 256 × 128-pixel monochrome display within a 120 × 60 mm active area and uses LED backlighting for clear visibility in industrial environments. The unit offers 170 KB of runtime memory with 240 KB of nonvolatile RAM for panels, and includes a battery‑backed real‑time clock for timestamping critical data. Communication options include DH-485, RS-232 (printer port), as well as EtherNet/IP, DeviceNet, ControlNet, Remote I/O, and DH+, making it compatible with a wide range of PLCs and networks; it can be programmed with PanelBuilder32 software and uses a 18–32 V DC input (24 V nominal), drawing up to 18 W. The PanelView 550 is intended for indoor use with NEMA 12/13/4X enclosure compatibility and IP54 when mounted inside an appropriate enclosure; firmware FRN 4.46 corresponds to this model.