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OP73 OP77B 6AV6641-0CA01-0AX1 Siemens touch screen LCD
The Siemens 6AV6641-0CA01-0AX1 is an SIMATIC OP77B industrial operator panel designed for machine operation, process monitoring, PLC control systems, and industrial automation applications.
Unlike modern Siemens touch panels, the OP77B is a keypad-operated HMI panel and does not include a touchscreen function. It uses a 4.5-inch monochrome STN LCD display with membrane keys for operator input.
The OP77B provides reliable communication through MPI and PROFIBUS-DP interfaces, supports MMC memory cards, and is configurable with WinCC flexible 2004 Compact, making it widely used in legacy Siemens S7 automation systems.
Original Siemens SIMATIC HMI operator panel
Model: OP77B
Part Number: 6AV6641-0CA01-0AX1
4.5-inch monochrome STN LCD display
Resolution: 160 × 64 pixels
Black and white display
Graphics-capable LCD interface
Membrane keyboard operation
8 programmable function keys
LED indicator function keys
MPI communication interface
PROFIBUS-DP communication support
RS232 / RS422 / RS485 interfaces
| Specification | Details |
|---|---|
| Model | 6AV6641-0CA01-0AX1 |
| Product Name | SIMATIC OP77B |
| Manufacturer | Siemens |
| Product Type | Industrial HMI Operator Panel |
| Display Type | STN LCD |
| Display Size | 4.5 Inch |
| Display Color | Monochrome Black/White |
| Number of Colors | 2 Colors |
| Resolution | 160 × 64 pixels |
| Display Backlight | LED Backlight |
| Backlight Lifetime | Approx. 100,000 hours |
| Touch Function | No Touchscreen |
| Input Method | Membrane Keyboard |
| Function Keys | 8 Programmable Keys |
| Communication | MPI / PROFIBUS-DP |
| Communication Speed | Up to 12 Mbps |
Siemens 6AV6641-0CA01-0AX1 OP77B is suitable for:
Industrial automation systems
Siemens S7 PLC control systems
Factory production lines
Machine operator stations
Packaging machines
CNC equipment
Process control systems
Assembly equipment
Manufacturing machinery
Legacy Siemens HMI replacement projects
Industrial maintenance and repair applications
Original Siemens SIMATIC industrial HMI quality
Reliable monochrome LCD display technology
Excellent compatibility with Siemens PLC systems
Supports MPI and PROFIBUS-DP communication
Compact size for machine-level installation
Ideal replacement for damaged OP77B panels
Extends service life of existing automation equipment
Reduces cost compared with complete machine upgrades
Suitable for industrial spare parts maintenance
Each Siemens OP77B HMI panel can be tested with:
Power-on function testing
LCD display inspection
Keyboard button testing
Function key verification
Communication interface testing
PLC communication test
MMC slot inspection
Housing condition inspection
Anti-static protective packaging
Professional industrial automation spare parts service
The 6AV6641-0CA01-0AX1 is a Siemens SIMATIC OP77B industrial operator panel used for PLC machine control and industrial automation applications.
No. The OP77B does not have a touchscreen. It uses a 4.5-inch monochrome STN LCD display with a membrane keyboard for operation.
The OP77B uses a 160 × 64 pixel monochrome STN LCD display.
It supports MPI and PROFIBUS-DP communication up to 12 Mbps, plus RS232/RS422/RS485 interfaces.
The OP77B has entered Siemens legacy product status, but replacement units and repair parts remain important for maintaining existing industrial systems.
