SCADA & PLC are the backbone of modern industrial automation, working together to control, monitor, and optimize processes across industries like manufacturing, oil & gas, power, water treatment, and pharmaceuticals. In simple words, PLC (Programmable Logic Controller) acts as the controller that runs machines, while SCADA (Supervisory Control and Data Acquisition) acts as the supervisor that monitors, analyzes, and visualizes data. Today, more than 70% of industries worldwide use SCADA & PLC integration for real-time monitoring, improved safety, reduced downtime, and smarter decision-making. Without PLC, machines can’t run automatically, and without SCADA, operators can’t monitor them efficiently—making their relationship critical. At Aaxis Nano, we specialize in delivering end-to-end SCADA & PLC solutions, ensuring reliability, compliance, and long-term efficiency for businesses of every size.
What is SCADA & PLC?
- SCADA → Supervisory system that collects data, analyzes performance, and allows remote control.
- PLC → Controller that executes programmed logic and runs machinery automatically.
Together, SCADA & PLC transform industries by reducing manual intervention, minimizing human error, and increasing productivity.
Is SCADA a PLC?
No, SCADA is not a PLC.
- PLC = Hardware controller (runs processes).
- SCADA = Software system (supervises and monitors processes).
👉 Think of PLC as the muscle and SCADA as the brain and eyes.
Relationship Between SCADA & PLC
- PLCs control machinery based on predefined logic.
- SCADA monitors and analyzes the performance of PLCs.
- The integration of SCADA & PLC ensures industries can:
- Operate remotely.
- Optimize processes in real-time.
- Improve compliance with environmental and safety norms.
Can SCADA Work Without PLC?
- Yes, SCADA can connect with RTUs (Remote Terminal Units) and IoT devices.
- But for complex industries, PLC is essential for real-time and error-free machine control.
Can PLC Run Without SCADA?
- Yes, PLCs can independently run processes.
- But without SCADA, no real-time data visualization, reporting, or centralized monitoring is possible.
- Industries lose efficiency and face higher downtime.
7 Main Parts of a PLC
- Power Supply – Runs the PLC system.
- CPU – Brain that executes logic.
- Input Module – Collects sensor signals.
- Output Module – Controls actuators/machines.
- Memory – Stores programs and data.
- Programming Device – Used to write/edit control logic.
- Communication Interface – Connects PLC with SCADA and other devices.
What is SCADA in PLC?
When we talk about SCADA in PLC, it means SCADA is integrated to supervise PLCs. This helps industries with:
- Plant-wide visibility of processes.
- Alarms & notifications in case of faults.
- Predictive maintenance to avoid breakdowns.
What is RTU in SCADA?
- RTU (Remote Terminal Unit) is used where PLCs are not suitable.
- RTUs collect and send data to SCADA from remote sites like pipelines, dams, and power grids.
Is SCADA Similar to PLC?
No, but they work together.
- PLC runs the process.
- SCADA manages the process.
This combination is the reason why industries call SCADA & PLC the heart and brain of automation.
Why SCADA & PLC Are Important Together
- Efficiency – Machines run smoothly with PLCs, while SCADA ensures real-time supervision.
- Remote Access – Operators control plants from anywhere.
- Cost Savings – Reduced labor, downtime, and maintenance costs.
- Compliance – Meets CPCB, ISO, and safety norms.
- Safety – Detects faults and prevents accidents.
Industries Benefiting from SCADA & PLC
- Food & Beverage – Ensures quality and consistency.
- Oil & Gas – Safe drilling, refining, and transport.
- Pharmaceuticals – Precision and compliance.
- Energy & Power – Smart grids and plant optimization.
- Mining & Metals – Heavy equipment automation.
- Water & Wastewater – Remote monitoring of treatment plants.
Why Choose Aaxis Nano for SCADA & PLC?
At Aaxis Nano, we don’t just provide products—we deliver turnkey automation solutions. With collaborations with global leaders in automation, instrumentation, and environment monitoring, we bring:
- Cutting-edge SCADA & PLC systems tailored for your industry.
- On-time delivery and commissioning with proven success records.
- Strong after-sales support that ensures reliability.
- Trusted by Delhi Jal Board, TATA Steel, and Rolls Royce Power Systems.
If you are looking for trusted SCADA & PLC experts, Aaxis Nano is your partner for building a smarter, safer, and more sustainable future.
