Allen-Bradley 2711-T5A5L1 PanelView 550 Operator Interface

Configured for tactile touch input and serial network communication in industrial control systems, the Allen-Bradley 2711-T5A5L1 (2711-T5A5L1 Operator Interface) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Integration

The 2711-T5A5L1 operator interface communicates via an RS-232 connection utilizing the DH-485 protocol to transfer touch target events and screen object updates to SLC 500 and MicroLogix controllers. Embedded firmware processing guarantees deterministic backplane transaction processing, maintaining low signal latencies for real-time control parameter changes. Onboard flash memory structures support panel profile configuration and runtime synchronization, scaling I/O point monitoring across point-to-point and token-passing serial configurations.

Frequently Asked Questions

Q: What power input constraints must be maintained for operating this terminal?

A: The terminal operates strictly on a 24 VDC power supply. Wiring must be connected to the dedicated power terminal block with correct voltage polarity to ensure proper internal power converter startup.

Q: How is serial communication established over the RS-232 interface using DH-485?

A: The RS-232 port uses DH-485 protocol signaling to communicate with host controllers, requiring shielded twisted-pair serial cable assemblies and correct node address settings within PanelBuilder32 software.

Q: What precautions should be taken to preserve the touch membrane response?

A: Clean the screen surface only with a soft cloth and mild non-abrasive cleaner. Avoid sharp objects or excessive actuation force to prevent puncturing the resistive touchscreen matrix.

Field Installation Guidelines

1. Panel Cutout and Gasket Sealing: Cut the mounting panel according to standard PanelView 550 cutout specifications. Ensure the perimeter sealing gasket is seated properly in the bezel channel to maintain panel ingress protection.
2. Clamp Fastening: Insert the mounting clips into the slots along the sides of the terminal housing. Tighten the screws evenly to create an environmental seal without distorting the front frame.
3. Functional Grounding: Connect a short, low-impedance ground conductor from the terminal ground lug directly to the central panel earth bus bar to mitigate electrical noise.
4. Serial Wiring Isolation: Route the RS-232 communication cable in a dedicated grounded conduit, maintaining a minimum clearance of 300 mm from high-voltage AC conductors and motor power cables.