SCADA & HMI Development is a core part of industrial automation, providing the visual interface and control backbone that enables operators, engineers, and managers to monitor and interact with industrial processes in real-time.
A centralized system that:
Collects real-time data from field devices (PLCs, RTUs).
Monitors and controls industrial processes.
Logs events, triggers alarms, and stores historical data.
A graphical interface that:
Allows human operators to interact with machinery or processes.
Displays data visually using charts, buttons, gauges, and alarms.
Typically installed on operator terminals, touchscreens, or PCs.
| Component | Function |
|---|---|
| PLC/RTU | Field controller collecting data and executing logic. |
| HMI Software | Interface software (e.g., FactoryTalk View, WinCC, Ignition). |
| SCADA Software | Supervisory system handling multiple devices and data aggregation. |
| Communication | Industrial protocols like Modbus, OPC UA, Ethernet/IP. |
| Database | Historical data logging (SQL, historians). |
1. Requirements Gathering
Understand process flow and user interaction needs.
Define system architecture and scope (local HMI vs. centralized SCADA).
2. Software & Platform Selection
Choose tools like:
SCADA: Wonderware, Ignition, WinCC, iFIX, FactoryTalk View SE
HMI: Siemens Comfort Panels, Red Lion, C-More, Maple Systems
3. Tag Management & I/O Mapping
Import tags from PLCs.
Assign data points to visual elements.
4. Screen Design
Create intuitive, user-friendly layouts.
Use mimic diagrams, real-time graphs, controls, and KPIs.
Follow ISA 101 HMI design standards (e.g., grayscale for normal, colors for alerts).
5. Alarming & Logging
Configure thresholds and alarm banners.
Set up event logging, acknowledgments, and historical records.
6. Security & Access Control
Role-based access (operator, supervisor, admin).
Secure login and logging of operator actions.
7. Testing & Simulation
Use simulators to test screen behavior and tag updates.
Validate communication with PLCs and databases.
8. Deployment & Commissioning
Install on industrial PCs or servers.
Ensure redundancy (hot standby, backup servers if needed).
Train operators and provide documentation.
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