Allen-Bradley 2711-T5A3L1 PanelView 550 HMI Display

Allen-Bradley 2711-T5A3L1 PanelView 550 HMI Display is a PanelView Standard operator terminal in the PV550 family, designed to provide a local human–machine interface to Rockwell Automation PLCs over a DH-485 serial network. The 2711-T5A3L1 model includes a DH-485 port but does not include a separate RS-232 port for direct serial connection. It features a 5.5-inch display and includes 240 KB of nonvolatile memory and 170 KB RAM for running simple HMI screens and data display. FRN 4.41 is a firmware/revision level that has been documented in PV550-related references for this class of terminal, including configurations noted as Ser H, Rev B. Common applications include local operator control and information display on manufacturing lines and packaging or process equipment where a PV550 serves as the operator interface to SLC 5/04, PLC-5, or newer Rockwell controllers via DH-485, without Ethernet or USB requirements. The 2711-T5A3L1 designation places it among the PV550 standard variants; it is chosen when a compact, dedicated 5.5-inch HMI is needed for machine-level monitoring and control within an existing DH-485 network.