6AV6641-0BA11-0AX1 SIEMENS SIMATIC Operator Panel OP77A MPI/PROFIBUS DP interface 1.5MB 4.5 inch display

6AV6641-0BA11-0AX1 SIEMENS SIMATIC Operator Panel OP77A MPI/PROFIBUS DP interface 1.5MB 4.5 inch display

The 6AV6641-0BA11-0AX1 is a classic monochrome operator panel (OP 77A) from the Siemens SIMATIC HMI family. It is designed for industrial environments with tight space and limited budgets, yet demanding long-term stable operation. This product has entered its spare parts lifecycle (PM410) since October 1, 2020. Official supply continues exclusively through spare parts channels. It still comes with a two-year global warranty and WinCC software support, providing a risk-free "plug-and-play" upgrade solution for older systems or replacements with the same model.

Key Selling Points:

4.5" STN monochrome display with 160 × 64 pixels, high black/white contrast, and a 100,000-hour backlight MTBF, ensuring clear readability even in dusty, bright, and vibrating environments.
Industrial-grade physical keys: 8 membrane function keys (4 with LEDs) with customizable labels, allowing precise operation even with gloves, eliminating accidental touches.
Dual serial communication ports: 1 RS422 + 1 RS485, up to 1.5 Mbit/s, directly connect to MPI/PROFIBUS DP networks without the need for an adapter.
256 KB Flash + RAM: Enough to store complete projects, alarm logs, and multilingual text, ensuring data is preserved during power outages.
Maintenance-free design: Battery-free and fanless, with IP65/NEMA 4× sealing on the front panel and IP20 on the rear panel. Operating temperature: -20°C…+60°C, with 15 g shock and 1 g vibration resistance.
Global certifications: CE, UL, cULus, FM Class I Compatible with Div. 2, Ex Zone 2/22, GL, ABS, BV, DNV, and LRS, this product is ready for installation in marine, oil and gas, and food processing applications.

Software backwards compatible

Supports WinCC flexible 2004 SP1 and above, as well as TIA Portal WinCC Comfort/Advanced/Professional. Old projects can be migrated with one click.

Typical Applications
One-to-one replacement for older TP177/OP77 series systems, eliminating the need to modify the interface or PLC program.
Operation terminals for single-machine equipment such as packaging machines, textile machines, printing presses, and ceramic production lines.
Human-machine interfaces for low-temperature/high-humidity environments such as logistics sorting, high-bay warehouses, and cold chain storage.
Ship engine rooms, pumping stations, and oil and gas skid-mounted equipment—meeting classification society and explosion-proof Zone 2 requirements.

Spare Parts Availability
Product Status: PM410 (Spare Parts Sales)
Last Available Date: Official channels are open permanently, but availability is subject to availability at the actual sales center.
Upgrade: For color touchscreen upgrades, seamless migration to the KTP400 is possible. Simplified panel, retaining the original opening and variable labels.

Product details pictures

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