WinCC/SCADA concepts and communications
Цель: Изучить тему «WinCC/SCADA concepts and communications» и закрепить её практическими заданиями и самопроверкой.
2 акад. часа чтение и разбор теории, решение задач, работа со схемой или виртуальным стендом и проверка понимания.
Основной материал
Uploaded PLC textbook describes WinCC functions such as event signaling, archiving measured values, logging process/configuration data, user administration and visualization. The same concepts apply broadly to SCADA platforms.
Communications
SCADA communicates via drivers/protocols: S7, OPC UA/DA, Modbus TCP, EtherNet/IP etc. Quality/status should propagate. A stale value without timestamp/quality is dangerous.
OPC
OPC provides standardized interface between automation data sources and clients. Modern OPC UA adds security and structured information model.
Практическая работа
Design data flow PLC -> OPC server -> SCADA -> historian. Identify where quality and timestamp should be maintained.
Самопроверка
• What WinCC/SCADA functions?
• What is driver?
• What is OPC?
• Why quality status needed?
• What is stale data?
Что нужно запомнить
- Uploaded PLC textbook describes WinCC functions such as event signaling, archiving measured values, logging process/configuration data, user administration and visualization.
- SCADA communicates via drivers/protocols: S7, OPC UA/DA, Modbus TCP, EtherNet/IP etc.
- OPC provides standardized interface between automation data sources and clients.
- Modern OPC UA adds security and structured information model.
- Design data flow PLC -> OPC server -> SCADA -> historian.