Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6AV6643-0CB01-1AX2 |
| Manufacturer | Siemens |
| Product Type | MP 277 8″ Touch Multi Panel (TFT HMI) |
| Display | 7.5″ TFT, resistive touch, 65,536 colors |
| Resolution | 640 × 480 pixels |
| Backlight MTBF (25 °C) | ~50,000 h |
| Processor | ARM |
| Configuration Memory | 6 MB Flash (retentive, battery-backed) |
| User Data Memory | 128 MB RAM |
| Backup Battery | Yes, ~6 h retentivity (RTC + tags) |
| Interfaces | 1 × RS422, 1 × RS485 (PROFIBUS/MPI), 1 × RJ45 Industrial Ethernet (PROFINET IO), 2 × USB Host, 1 × MMC slot |
| Operating System | Windows CE |
| Configuration Software | WinCC flexible 2008 Standard SP3 Upd5+, WinCC Comfort V13 HSP (TIA Portal) |
| Online Languages | 5 |
| Project Languages | 32 |
| Screens | 500 |
| Variables | 2048 per device, 200 per screen |
| Recipes | 300 (500 records/recipe, 1000 entries/record) |
| Messages / Alarms | 4000 (bit + analog), 32 classes, 80-char length, 8 process values/msg, 512 cyclic buffer |
| Trends | 300 |
| VB Script Objects | 50 |
| Power Supply | 24 V DC (20.4 – 28.8 V), rated ~0.6–0.8 A |
| Front Protection | IP65 / NEMA 4x |
| Rear Protection | IP20 |
| Certifications | CE, UL, cULus, FM Cl. I Div. 2, Ex Zone 22, NEMA 4x / Type 12 |
| Operating Temp. | 0 °C to +50 °C (vertical), +40 °C max at ±35° tilt |
| Dimensions (W × H × D) | 240 × 180 × 61 mm (bezel), cut-out 227 × 167 mm |
| Weight | approx. 1.61 kg |
Main Features and Advantages
Full-color TFT touch in a compact 8″ footprint. The 6AV6643-0CB01-1AX2 delivers a 7.5″ TFT at 640×480 with 65,536 colors — a substantial leap from the OP270’s 256-color STN. Resistive analogue touch supports finger, stylus, or gloved operation; combined with the on-screen keyboard (numeric, alphanumeric, hex) the panel removes the need for physical function keys in most applications. The 500 screen capacity and 10 graphics objects per screen (bar charts, trend curves, vector graphics) let process engineers build layered navigations — overview → unit detail → loop faceplate → alarm drill-down — within the 6 MB config envelope. For OEMs, the 240×180 mm bezel with 227×167 mm cut-out and 61 mm depth fits standard machine-door cut-outs originally designed for the MP270B 8″, making the 6AV6643-0CB01-1AX2 a near-drop-in upgrade with better color and more memory.
Multi-protocol connectivity without add-on cards. Most classic HMIs force a choice between MPI/PROFIBUS and Industrial Ethernet; the 6AV6643-0CB01-1AX2 carries both on-board. RS485 handles PROFIBUS DP slave timing (up to 12 Mbit/s) to S7-300/400 masters or DP/V0 drive networks; RS422 provides a second serial path for printer, barcode, or legacy device. The RJ45 Industrial Ethernet port runs PROFINET IO — meaning the panel can sit on the same PN ring as S7-1200/1500 CPUs, G120 drives, and ET 200 SP remote I/O, even while the MPI/DP side talks to an older S7-400. Two USB hosts accept mouse + keyboard for service-mode engineering at the panel, or a barcode scanner for warehouse/manufacturing WIP tracking. An MMC slot enables project cloning and bulk data logging without occupying internal Flash.
WinAC MP soft-PLC platform. A distinctive advantage of the 6AV6643-0CB01-1AX2 is its qualification as a WinAC MP 277 host — the软PLC runtime mirrors an S7-300 CPU 315 instruction set, letting the panel run user logic, PID loops, and I/O mapping locally while visualizing the same data. This collapses a two-box S7-300 rack + separate HMI into a single DIN-rail-free panel mount, ideal for compact skids, lab units, and standalone test stands. Even when not running WinAC, the “Multi Panel” label signals that Siemens validated the ARM/WinCE platform for heavier runtime loads than a TP177 could sustain.
Recipe, alarm, and scripting depth matching PC-based HMIs. The 6AV6643-0CB01-1AX2 supports 300 recipes × 500 records × 1000 entries at 64 KB recipe Flash, 4000 messages across 32 alarm classes (bit + analog split, 8 process values per message, 512 cyclic buffer), 300 trends, 50 VB Script objects, and 48 scheduled tasks. This is “small-SCADA” territory — sufficient for batch skids, multi-zone ovens, test-cell rigs, and filling lines where audit trails, acknowledgements, and derived calculations at the HMI layer matter. Sm@rtService and Sm@rtAccess optional packages (via WinCC flexible) add remote web access and cross-panel data sharing, extending the 6AV6643-0CB01-1AX2 into distributed HMI architectures without a separate SCADA server.
Retentive memory + backup battery. Unlike the OP270 which relied mainly on Flash, the 6AV6643-0CB01-1AX2 adds a backup battery (~6 h retentivity) for RTC and tag values during power loss — valuable for batch timestamp continuity and alarm sequence-of-events across brief outages. The 6 MB config Flash is non-volatile for project storage; the 128 MB RAM handles runtime tags and screen buffers. Combined with the 50,000 h TFT backlight MTBF (~5.7 years continuous at 25 °C), the panel is positioned for multi-year deployment between spares.
Certification suite for wash-down and light hazardous duty. IP65 front / NEMA 4x with sealed gasket tolerates hose-down in food/beverage and pharma suites; rear IP20 assumes the panel sits on a cabinet door with the rear in the dry zone. FM Class I Div. 2 and Ex Zone 22 extend deployment to light hazardous areas (paint shops, grain elevators, solvent dosing) where a bare commercial touch-panel would need purge enclosures.
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