Allen-Bradley 2711-T9A2 PanelView 900 Operator Interface
The Allen-Bradley 2711-T9A2, also cataloged as the 2711-T9A2 Operator Interface, operates as a dedicated hardware component for process monitoring and operator input execution within DH-485 control networks.
Suffix Breakdown & Model Matrix
- 2711: PanelView Standard Terminal Series
- -T9: 9-inch display with analog resistive touch screen interface
- A: Monochrome display screen type (640 x 480 pixel resolution)
- 2: DH-485 communication port (RS-485 level interface)
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 2711-T9A2 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 7.00 lbs (3.18 kg) |
| Dimensions | Standard PanelView 900 panel-cutout enclosure dimensions |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 100 to 240 VAC input (50/60 Hz) |
| Display Type | 9-inch monochrome display |
| Display Resolution | 640 x 480 pixels |
| Operator Input | Touch screen (analog resistive) |
| Communication Ports | DH-485 serial communication port |
Firmware Flash Compatibility and Deterministic Network Interfacing
The 2711-T9A2 terminal processes graphical objects and alarm states via internal logic execution synchronized across DH-485 token-passing networks. Communication driver routines maintain firmware flash compatibility with SLC 500 and MicroLogix controller registers to ensure deterministic data update intervals. Onboard signal conditioning shields low-voltage display electronics and touch-detection circuitry from electrical noise on the industrial network bus.
Frequently Asked Questions
Q: Can the 2711-T9A2 terminal be hot-swapped while line power is applied to the main cabinet?
A: No. The 100 to 240 VAC primary power supply input must be de-energized and lock-out procedures verified before removing or replacing the terminal unit from the panel cut-out.
Q: What protocol does the primary communication port on the 2711-T9A2 support?
A: The primary port operates strictly on the DH-485 communication protocol over an RS-485 physical layer, designed for direct peer-to-peer or multi-drop connection with compatible Allen-Bradley PLCs.
Field Installation Guidelines
- Isolate main AC supply lines and confirm zero voltage at terminal connections before wiring the 100 to 240 VAC power block.
- Ensure the panel sealing gasket is properly seated around the enclosure cutout before tightening the mounting clamps to preserve NEMA/IP ingress ratings.
- Attach a dedicated chassis grounding conductor from the protective earth stud on the terminal housing to the cabinet central copper ground bar.
- Maintain proper line termination resistors at the physical ends of the DH-485 network cable run to eliminate signal reflections.
- Maintain minimum ventilation spacing behind and above the rear housing to facilitate natural thermal dissipation inside the panel enclosure.
Allen-Bradley 2711-T9A2 PanelView 900 Operator Interface
Allen-Bradley 2711-T9A2 PanelView 900 Operator Interface
The Allen-Bradley 2711-T9A2, also cataloged as the 2711-T9A2 Operator Interface, operates as a dedicated hardware component for process monitoring and operator input execution within DH-485 control networks.
Suffix Breakdown & Model Matrix
- 2711: PanelView Standard Terminal Series
- -T9: 9-inch display with analog resistive touch screen interface
- A: Monochrome display screen type (640 x 480 pixel resolution)
- 2: DH-485 communication port (RS-485 level interface)
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 2711-T9A2 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 7.00 lbs (3.18 kg) |
| Dimensions | Standard PanelView 900 panel-cutout enclosure dimensions |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 100 to 240 VAC input (50/60 Hz) |
| Display Type | 9-inch monochrome display |
| Display Resolution | 640 x 480 pixels |
| Operator Input | Touch screen (analog resistive) |
| Communication Ports | DH-485 serial communication port |
Firmware Flash Compatibility and Deterministic Network Interfacing
The 2711-T9A2 terminal processes graphical objects and alarm states via internal logic execution synchronized across DH-485 token-passing networks. Communication driver routines maintain firmware flash compatibility with SLC 500 and MicroLogix controller registers to ensure deterministic data update intervals. Onboard signal conditioning shields low-voltage display electronics and touch-detection circuitry from electrical noise on the industrial network bus.
Frequently Asked Questions
Q: Can the 2711-T9A2 terminal be hot-swapped while line power is applied to the main cabinet?
A: No. The 100 to 240 VAC primary power supply input must be de-energized and lock-out procedures verified before removing or replacing the terminal unit from the panel cut-out.
Q: What protocol does the primary communication port on the 2711-T9A2 support?
A: The primary port operates strictly on the DH-485 communication protocol over an RS-485 physical layer, designed for direct peer-to-peer or multi-drop connection with compatible Allen-Bradley PLCs.
Field Installation Guidelines
- Isolate main AC supply lines and confirm zero voltage at terminal connections before wiring the 100 to 240 VAC power block.
- Ensure the panel sealing gasket is properly seated around the enclosure cutout before tightening the mounting clamps to preserve NEMA/IP ingress ratings.
- Attach a dedicated chassis grounding conductor from the protective earth stud on the terminal housing to the cabinet central copper ground bar.
- Maintain proper line termination resistors at the physical ends of the DH-485 network cable run to eliminate signal reflections.
- Maintain minimum ventilation spacing behind and above the rear housing to facilitate natural thermal dissipation inside the panel enclosure.
