implementation

LangGraph StateGraph Setup

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Linked challenge: Stateful SCADA Event Graph using LangChain & LangGraph

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Linked challenge

Stateful SCADA Event Graph using LangChain & LangGraph

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Import `StateGraph`, `END` from `langgraph.graph`. Define a `ControlState` TypedDict containing `current_telemetry`, `alert_level`, `action_log`. Instantiate the graph builder.

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Linked challenge

Stateful SCADA Event Graph using LangChain & LangGraph

Industrial control systems handle complex state transitions—such as moving from Normal Operation to Alert, Diagnostic Investigation, and Safe Shutdown. Implementing these multi-step state machines with standard LLM chains leads to fragile execution loops. In this challenge, developers will construct a stateful industrial control state graph using LangChain and LangGraph. The system maintains continuous state persistence across incoming SCADA sensor telemetry batches. When Rosemount pH/ORP or motor vibration metrics exceed critical control limits, the LangGraph workflow executes conditional branching: either requesting automated calibration tools, scheduling maintenance tasks, or executing an emergency state transition.

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