Features:
- A 4.5-inch monochrome screen presents machine status and operator prompts.
- Eight function keys and twenty-three system keys provide non-touch command entry.
- MPI/PROFIBUS DP, serial, USB and memory-card paths support control and project service.
The OP77B is operated entirely through its membrane keyboard, so project navigation must match the assigned hard keys.
The 24 V DC panel communicates with multiple controller families through drivers selected in the WinCC flexible project.
Front sealing depends on the correct cutout, gasket and mounting pressure while the cabinet protects the IP20 rear.
The Siemens 6AV6641-0CA01-0AX1 SIMATIC OP77B Operator Panel may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6AV6641-0CA01-0AX1 SIMATIC OP77B Operator Panel Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
How operators interact with the OP77B
- Display: The 160 x 64 pixel STN screen presents monochrome graphics and text.
- Function layer: Eight function keys call project-assigned commands; four include LED feedback.
- System layer: Twenty-three system keys support navigation and numeric, alphanumeric or hexadecimal entry.
- No touch layer: Screen presses are not accepted because the panel has no touch sensor.
Moving or restoring the HMI project
- Engineering tool: The panel is configured with WinCC flexible Compact 2004 or a compatible later release.
- USB path: The USB interface supports the documented service and transfer functions.
- Serial path: RS232, RS422 and RS485 interfaces provide additional communication routes.
- External media: The combined MMC/SD slot supports removable storage for the applicable panel functions.
Matching the project to the target controller
- SIMATIC path: MPI and PROFIBUS DP support SIMATIC S7 controller communication.
- Serial drivers: Configured drivers cover selected Siemens and third-party controller families.
- Speed ceiling: The PROFIBUS DP interface supports rates up to 12 Mbit/s.
- Migration check: Driver, address, baud rate and project connection name must match the installed controller.
Mechanical and environmental replacement checks
- Cutout: The cabinet opening is 135 x 171 mm.
- Front size: The bezel measures approximately 150 x 186 mm.
- Depth: Allow approximately 38.5 mm behind the mounting surface.
- Sealing: Correct installation provides IP65 at the front while the rear remains IP20.