Application Scenarios:
Picture a mid-1990s bottle-filling line in a beverage plant: three SLC 5/04 processors control the rinser, filler and capper over a Remote I/O network, and the operator at each station needs to start/stop the machine, adjust fill timers, view active alarms, and acknowledge faults — all while wearing gloves and working in a wet, washdown-adjacent environment. The machine builder’s pain points are universal in this era of HMI design: membrane-keypad-only terminals feel restrictive for numeric entry, touchscreen-only terminals fail when operators need tactile certainty during a fault condition, and panel space is at a premium. The 2711-B5A1 was engineered specifically to bridge this gap — a stainless-steel domed membrane for confident F1–F10 function-key and navigation input, a resistive touch screen for direct on-graphic selection of setpoints and screen jumps, and an IP65/NEMA 4X-indoor front bezel that tolerates the splash and wipe-down regime of food-and-beverage and light-industrial environments.
For OEMs and end users maintaining this installed base today, the engineering pain points the 2711-B5A1 resolves are just as relevant: a single terminal that talks directly to a Remote I/O scanner on a PLC-5 or SLC chassis without a gateway, an ATA flash memory card slot for fast application cloning across multiple machines, a battery-backed real-time clock that time-stamps critical alarm events, and a 100 000-hour LED backlight that, in most facilities, has not yet required replacement after decades of three-shift service.
Parameter:
| Main Parameters | Value / Description |
|---|---|
| Product Model | 2711-B5A1 (Bulletin 2711, PanelView 550 Keypad/Touch, Remote I/O) |
| Manufacturer | Allen-Bradley – Rockwell Automation |
| Product Category | Monochrome operator interface terminal (HMI), keypad + touchscreen |
| Display | 5.5-inch monochrome LCD, Blue Mode; 120 × 60 mm (4.75 × 2.38 in) active area |
| Resolution / Backlight | 256 × 128 pixels; 100 000-hour LED backlight (field-replaceable lamp 2711-NL1) |
| Operator Input | Stainless-steel domed membrane keypad, 10 function keys (F1–F10), 2 000 000-press rating; analog resistive touch, 128 touch cells, 1 000 000-press rating |
| Communication | Remote I/O port (15-pin D-shell) to PLC-5 / SLC 500 scanner; RS-232 printer/download port (9-pin DIN) at 1200 / 2400 / 9600 / 19 200 baud |
| Programming Software | PanelBuilder32 (32-bit, Windows 2000/ME/XP/Vista); application transfer via RIO Pass-Through, serial cable 2711-NC13/NC14, or ATA flash card |
| Memory / Storage | 170 K application runtime; 240 K Flash (objects + text + bitmaps); ATA PC flash memory card supported (firmware 3.0 and later, e.g., 2711-NM28) |
| Input Power | 85–264 V AC, 47–63 Hz, 45 VA max (120 V AC nominal) |
| Real-Time Clock | Battery-backed RTC for critical-data time stamping |
| Operating Environment | 0–55 °C operating, −20 to +70 °C non-operating; 5–95% RH noncondensing |
| Enclosure Ratings | NEMA Type 12, 13, 4X (indoor only), IP54, IP65 front bezel |
| Certifications | UL, C-UL, CE, C-Tick; Class I Div 2 Groups A,B,C,D; Class I Zone 2; Class II Div 2; Class III Div 1 |
| Dimensions / Weight | 167 × 266 × 106 mm (6.57 × 10.47 × 4.17 in), 1.2 kg (2.7 lb) |
