Technical Specifications

Main Features and Advantages

The 6AV6640-0CA01-0AX0​ is built around economy of footprint and native S7-200 bus integration, two traits that define its staying power on small-machine lines. At 198 × 128 mm faceplate with a 5.7″ viewing area, the panel tucks into compact enclosures — frequently the same cutout envelope as older text panels — yet delivers bitmap graphics, bar-graph indicators and multi-screen navigation that a character-display panel cannot. The blue-mode STN is deliberately chosen over color TFT for this tier: lower power draw, longer CCFL life in continuous 24/7 duty, and sufficient contrast for monochrome process diagrams, alarm lists and numeric entry screens that dominate S7-200 applications. On the 6AV6640-0CA01-0AX0, the 12 MB user memory is generous relative to the screen count (250) and message pool (500), meaning a typical S7-200 program with a few dozen tags, a handful of recipes and a Chinese/English bilingual set fits comfortably with headroom for trend archives stored locally.

Bus integration is the quiet differentiator. The 6AV6640-0CA01-0AX0​ connects over the S7-200’s native PPI/MPI network at 9.6 kbps to 187.5 kbps, meaning the panel can share the same cable daisy-chain with a programming PG or a TD 200 text display without additional interface modules. For service teams maintaining mixed S7-200 cells, carrying one 6AV6640-0CA01-0AX0​ spare covers any TP170MICRO node on the floor — no PROFINET license, no TIA Portal version dance, just WinCC Flexible 2004 Micro and the standard MPI cable.

Durability specs suit the shop floor. The front foil carries IP65, resisting oils and spray in wash-down adjacent zones, and the -25 °C cold-start rating lets the 6AV6640-0CA01-0AX0​ live in unheated workshops, freezer-adjacent staging areas or outdoor kiosk cabinets that a consumer-grade TFT would refuse to wake from. The analog resistive digitizer tolerates gloved taps and continues to register through minor surface contamination — a consideration on grease-prone stations where capacitive input would ghost. Open-source software components bundled with the firmware reduce total-cost-of-ownership arguments for OEMs standardizing the 6AV6640-0CA01-0AX0​ across a product line: no recurring runtime license per panel beyond the one-time WinCC Flexible Micro project cost.

Application Field

The 6AV6640-0CA01-0AX0​ lives on S7-200-driven machines where the operator interaction model is “a few setpoints, a few status flags, occasional recipe recall, acknowledge alarms” — not the rich P&ID + trend + audit trail workload of a TP1200 Comfort. In textile auxiliary frames — yarn feeders, small dye-beck controllers, tension stands — the 6AV6640-0CA01-0AX0​ pairs with a CPU 224 to show spindle RPM, temperature setpoint, batch counter and fault codes on a 250-screen project that fits in well under 12 MB. Packaging OEMs putting S7-200 into entry-level flow wrappers, carton erectors and label applicators use the 6AV6640-0CA01-0AX0​ because the 5.7″ blue STN reads clearly under the machine halogen task lights and the PPI bus lets the same MPI cable serve both panel and handheld programmer during commissioning.

Test-benches and lab rigs are another natural fit: material testers, climate-chamber controllers, small hydraulic press local panels. Here the 6AV6640-0CA01-0AX0​ earns its keep through the -25 °C low-end rating (walk-in environmental chambers) and the fact that WinCC Flexible 2004 Micro projects are trivially cloned across ten identical rigs — no TIA Portal license stack required for a university lab or an R&D pilot cell. For retrofit of aging TP170MICRO units on installed S7-200 lines, dropping a replacement 6AV6640-0CA01-0AX0​ in preserves the existing WinCC Flex project binary; the touch grid may need a quick three-point recalibration through the panel’s own Control Panel shell, but no tag remapping or controller-side change is involved. Food & beverage skids at the very small end — CIP satellite panels, filler bowl local controls — also deploy the 6AV6640-0CA01-0AX0​ where a stainless enclosure + IP65 front + 24 V DC supply from the skid’s PSU makes the panel a self-contained operator window without pulling PROFINET back to a central SCADA.