Allen-Bradley 2711-T9C9 Terminal

The Allen-Bradley 2711-T9C9, also cataloged as the 2711-T9C9 Operator Interface Terminal, operates as a dedicated hardware component for human-machine interface execution and process display routing within DH-485 network platforms.

Hardware Specifications

EtherNet/IP Networks and I/O Density Scaling

The operator terminal processes field-level graphic representations while communicating across DH-485 serial networks and EtherNet/IP deterministic networks via protocol translation bridges. Engineered to optimize operator panel layouts and support I/O density scaling, the terminal translates user touch interactions into logic commands routed directly to host PLC registers. Integrated firmware flash compatibility guarantees deterministic update rates for real-time alarm monitoring, trend logging, and peripheral serial printing operations.

Frequently Asked Questions

Q: What communication protocol is supported on the primary RS-232 port of the 2711-T9C9 terminal?

A: The primary RS-232 communication port is dedicated to the DH-485 network protocol for interfacing with compatible Allen-Bradley controllers.

Q: Can the 2711-T9C9 terminal be powered directly using 24 VDC control power?

A: No. The 2711-T9C9 requires an internal AC power module accepting a nominal supply input of 100-240 VAC at 50/60 Hz.

Field Installation Guidelines

Ensure all AC line power is completely isolated before mounting the terminal into the panel cutout. Position the unit in the enclosure cutout and tighten the mounting levers evenly to achieve proper compression of the environmental sealing gasket. Route the RS-232 communication cable in dedicated conduits away from high-voltage motor wires or variable frequency drive leads to minimize electromagnetic noise and signal distortion on the DH-485 network.