The Siemens SIMATIC OP77A is a compact and reliable HMI/operator panel from the SIMATIC HMI family, designed for industrial machine control and visualization applications.
It features a 4.3-inch STN LCD display with 160 × 64 pixel resolution and yellow-green monochrome visualization. The front panel incorporates a membrane keyboard with dedicated system keys and configurable function/soft keys, making it suitable for straightforward operator interaction in industrial machinery.
The OP77A provides an MPI/PROFIBUS DP interface up to 1.5 Mbit/s and can be configured using WinCC flexible. Siemens lists the OP77A as a discontinued product, with the referenced model having reached end of product lifecycle in October 2024.
Key Specifications
- Brand: Siemens
- Series: SIMATIC HMI
- Model: OP77A
- Type: Industrial Operator Panel / HMI
- Display: 4.3″ STN LCD
- Resolution: 160 × 64 pixels
- Display: Monochrome yellow-green
- Input: Membrane keyboard
- System Keys: 23
- Configurable Soft Keys: 8
- LED Keys: 4
- Working Memory: 256 KB
- Communication: MPI / PROFIBUS DP
- Maximum Interface Speed: 1.5 Mbit/s
- Configuration: WinCC flexible
Applications
- Industrial machine control
- Factory automation
- Machine monitoring
- Production equipment
- Process visualization
- Packaging machinery
- Operator interface systems
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