PLC SCADA Course — Online, With Certificate
130 hands-on scenarios covering every layer a SCADA engineer needs at the PLC level: ladder logic, HMI screens, Modbus TCP register maps, alarm logic, and PID control. Certificate of completion included. Free to start.
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Certificate of completion via Cert Pack — $99 one-time, no subscription required.
The discipline
What PLC SCADA programming actually is
A PLC (Programmable Logic Controller) is the controller that makes machines move. A SCADA system (Supervisory Control and Data Acquisition) is the software layer above it — the system that reads PLC tags, shows them on operator screens, logs them to a historian, and sends setpoint commands back down to the PLC. Most job postings that say "PLC SCADA" are asking for someone who can do both: write PLC logic that produces clean, well-named tags, and configure the SCADA system to read them correctly.
The PLC layer is the harder skill to acquire because it requires writing and testing executable code. The SCADA configuration layer is largely a drag-and-drop exercise once you understand the data model. This course prioritises the PLC layer — the part that makes or breaks a SCADA integrator's ability to deliver working systems.
Common question
PLC vs SCADA — and which to learn first
A PLC is the control layer: hardware that reads sensors and drives motors, valves, and lamps in real time. SCADA is the supervision layer: software that reads the PLC's tags, shows them on operator screens, logs them to a historian, raises alarms, and sends setpoints back down. SCADA cannot run without a PLC (or equivalent controller) producing the data underneath it.
That dependency answers the most common question — should I learn PLC or SCADA first? Learn the PLC layer first. SCADA configuration is largely drag-and-drop once you understand the tag database; PLC logic is the part that requires writing and testing real, executable code. A SCADA integrator who cannot write clean, well-named PLC logic will struggle no matter how slick their screens look. This course is sequenced that way: PLC fundamentals first, SCADA-facing skills (HMI, alarms, comms, historian concepts) layered on top.
Where does DCS fit? A Distributed Control System bundles the controller and supervisory layers into one vendor-integrated platform, used in continuous process plants (refining, chemicals, power). The tag, alarm, and loop-control concepts you build here transfer to DCS thinking too — the architecture differs, the control fundamentals do not.
How it fits together
The PLC + SCADA stack, illustrated
Each diagram below is a layer of the system this course teaches, from the field I/O up to the operator screen and the network that ties them together.
Curriculum
PLC SCADA course curriculum
Six tracks from first principles to SCADA-ready. Estimated hours are for an engineer with no prior PLC experience working at a focused pace.
| Track | What you learn | Est. hours | Certificate | Free? |
|---|---|---|---|---|
| PLC Fundamentals | Scan cycle, I/O addressing, contacts and coils, latching, timers, counters, state machines, debugging | 8–16 hrs | Included in Pro + Cert Pack | Free |
| Core Building Blocks | Function blocks, structured text, analog I/O and scaling, SFCs, shift registers | 8–16 hrs | Included in Pro + Cert Pack | Pro |
| Advanced Topics | PID control, alarm logic, safety systems, Modbus TCP, code organisation, troubleshooting | 8–16 hrs | Included in Pro + Cert Pack | Pro |
| Machine Scenarios (130 total) | Traffic light, motor control, conveyor sort, tank fill, batch mixer, elevator, boiler, PID temp, packaging, wiring labs, VFD, safety, Modbus comms | 40–80 hrs | Auto-graded; results in portfolio PDF | Pro |
| HMI Track | Motor start/stop panel, alarm dashboard, multi-screen navigation, tag binding exercises | 6–12 hrs | Included in Cert Pack | Pro |
| Interview Tracks | Timed scenario challenges: basic ladder, timers and counters, interlocks, sequencers | 4–8 hrs | PDF certificate on pass | Pro |
Total estimated hours: 74–148 hrs for a complete beginner to SCADA-ready confidence.
Certification
Certificate of completion
The Cert Pack ($99 one-time) generates two documents: a PDF certificate of completion listing the tracks completed and a portfolio PDF showing your scenario results — the scenarios you passed, your solutions, and the grader's test case output.
The certificate is not a Rockwell, Siemens, or ISA certification. It is evidence of demonstrated PLC programming skills — the kind of evidence that carries weight when a hiring manager can see your actual scenario solutions alongside the certificate, not just a completion badge. Many of our users share the portfolio PDF with job applications or link to it from their LinkedIn profile.
Cost comparison
PLC SCADA course cost — what you actually pay
Training cost varies enormously by format. This table compares realistic 2025–2026 costs across the main options.
| Option | Cost | Format | Hardware included | Certificate |
|---|---|---|---|---|
| Technical institute / TVET PLC SCADA course | R8,000 – R25,000 (~$450–$1,400 USD) | 3–5 day classroom | Yes — lab hardware included | Institution certificate |
| Rockwell TechConnect classroom (North America) | $2,000 – $5,000 | 2–5 day classroom | Yes — ControlLogix lab | Rockwell completion certificate |
| Udemy PLC SCADA course | $20 – $200 | Online video | No | Completion badge (non-accredited) |
| RealPars PLC + SCADA subscription | ~$600/yr ($50–$60/mo) | Online video | No | Completion certificates |
| This platform (PLC Simulator) | Free to start; $99 Cert Pack | Browser-based, hands-on scenarios | No (simulation only) | PDF certificate + portfolio PDF |
Cost figures are estimates based on publicly advertised 2025–2026 pricing. Verify with each provider before enrolling. SA institute costs converted at R18/USD for illustration.
Related
Related training pages
- SCADA training — what SCADA roles need, skills matrix, and honest scope of what we teach.
- PLC training — the full PLC curriculum overview: 18 lessons, 130 scenarios.
- PLC classes online — self-paced classes vs cohort positioning.
- Allen-Bradley training — for SCADA roles in North American Rockwell-heavy plants.
- HMI Simulator — build operator screens against a live PLC simulation.
Start the PLC SCADA course free.
No install. No credit card. 18 lessons and the first two scenarios are free — including the fundamentals every SCADA engineer needs.