The Allen-Bradley 2711-B5A1 is a PanelView 550 standard keypad and touchscreen terminal. It has a 5.5-inch blue monochrome LCD touchscreen with 128 touch cells that have an actuation of 1 million presses. This terminal has a 256 x 128 display resolution and a display area of 4.75 x2.38 inches. Its internal backlight has approximately 100,000 hours of LED life but it is user-replaceable with a 2711-NL1 backlight. The keypad input of this terminal consists of numeric keys, navigation keys, and function keys that have a stainless-steel domed membrane and an actuation of 1 million presses.

It is an AC or DC power terminal that has a 240 KB non-volatile RAM for application objects, text, and bitmaps, and a 170 KB application runtime. It comes with an RS-232 printer port and a remote I/O communication port. The communication cable compatible with the 2711-B5A1 terminal is the 2711-NC13 and it can be programmed using the Panelbuilder 32 software. A battery-backed real-time clock timestamps critical data and it supports an ATA memory card. It has a total measurement of 6.57 x 10.47 x 4.17 inches and weighs 2.7 pounds. It ships with a firmware version that ranges from 1.00 to 4.48.

This terminal has a nominal DC input voltage of 24 Volts DC, a DC input voltage range of 18 to 30 Volts DC, and an AC input voltage of 85 to 264 Volts AC at 47 to 63 Hertz. It also has a maximum power consumption of 18 W or 0.75 Amps at 24 Volts DC for DC power and 45 VA for AC power. The operating temperature ranges from 0 to 55 degrees Celsius and the non-operating temperature ranges from -20 to 70 degrees Celsius. The heat dissipation of the 2711-B5A1 terminal is 20 W or 69 BTU/hour and its non-condensing relative humidity is 5 to 95% at 0 to 30 degrees Celsius. It has an operating altitude of up to 2000 meters and an operating vibration of 2 g at up to 2000 Hertz. The 2711-B5A1’s operating shock is 30 g and its non-operating shock is 50 g.

The Allen-Bradley 2711-B5A1, as part of the PanelView 550 standard operator terminals, enables interaction with multiple devices simultaneously through the device’ intuitive design. In most application, the 2711-B5A1 PanelView Operator terminals may be generally referred to as a Human Machine Interface (HMI).

This HMI provides monitoring, control, communication and other functionalities in one place - via the integrated screen and operator input areas. The HMI’s screen features a 5.5-inch display size, having a resolution of 128 x 64 pixels. With this small screen area, this device is ideally used for micro-automation and small processes that requires minimum graphical, equipment and static displays. It is also built with embedded communication terminals such as an RS232 port for printer communication and a Remote I/O (RIO) communication interface that caters Remote I/O protocol which is a serial-based communication standard. With RIO protocol, up to 32 devices in the Remote I/O network may be connected with a single master device per segment. The RS232 printer port may be specifically used for printing alarm list and messages.

Control of the process can be made via operator inputs on either the terminal’s Keypad and Touchscreen input area. The embedded keypad consists of Ten (10) Function keys from F1 to F10 that are fully programmable for linking to runtime objects and operator actions and commands. The touchscreen interface enables direct interaction with the operator terminal, allowing runtime objects to be pressed to initiate a specific action or command.

Other equally important parameters of the 2711-B5A1 include a rated power supply input range of 85-264V AC, with a frequency of 47-63 Hz, Random Access Memory (RAM) of 170KB and 240KB non-volatile memory.