Features:
- A 4.5-inch monochrome display presents configured process screens at 160 x 64 pixels.
- Eight function keys and the membrane keypad provide all operator input without a touch layer.
- MPI or PROFIBUS DP communication uses the panel’s serial interface at up to 1.5 Mbit/s.
The OP77A links physical key actions to the process variables and commands defined in its WinCC flexible project.
Four illuminated function keys can return configured status information beside the monochrome screen.
Its protected front remains available to the operator while supply and serial wiring stay inside the cabinet.
The Siemens 6AV6641-0BA11-0AX1 SIMATIC OP77A Operator Panel may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6AV6641-0BA11-0AX1 SIMATIC OP77A 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.
Assigning commands to the physical keypad
- Function keys: Eight keys call the actions assigned in the HMI project.
- LED feedback: Four function keys include indicators that can show configured states.
- System keys: Navigation and value entry use dedicated membrane controls.
- No touch layer: Every operator action must be reachable through a programmed physical key.
Using one interface for controller data
- MPI mode: The serial hardware can exchange data with the configured MPI station.
- PROFIBUS mode: The same panel interface can instead operate on the assigned PROFIBUS DP network.
- Bus settings: Address and transmission rate in the project must match the connected controller network.
- Interface limit: Ethernet is not available as an alternative communication path on this model.
Allocating the available runtime resources
- Screen set: The project can contain as many as 500 configured screens.
- Message set: Up to 1,000 messages share the project resources.
- Variable set: The documented ceiling is 1,000 process variables.
- Language set: As many as five runtime languages can be included within the memory limit.
Keeping the front and rear environments separate
- Operator side: The installed front surface provides IP65 protection at the cabinet face.
- Cabinet side: Rear connections remain IP20 and require the enclosure for protection.
- Panel angle: The mounting angle may reach the documented 80° limit without external ventilation.
- Thermal path: Cabinet temperature and free space around the rear determine heat dissipation.