Industrial control systems are built by people with very different backgrounds.
Some readers are seeing their first PLC. Others wire panels every day. Others design entire automation systems.
This Field Guide uses difficulty icons to show how much background an article assumes.
They indicate experience level, not intelligence. Experienced engineers still read technician‑level material. Fundamentals never stop mattering.
Last update: 02 Apr 2026
Student
Student articles assume little or no experience with industrial automation.
Examples:
- DIN Rail at the Mechanical Interface Layer
- Teardown of a SICK Reflex Array Sensor
- DIN Rail Industrial Power Supply: Defining Characteristics
Goal: build intuition and remove the mystery.
Technician
Technician articles focus on building and maintaining real systems.
They assume basic electrical knowledge and hands‑on work with hardware.
Examples:
- Guide to Troubleshooting Industrial Control and Automation Equipment
- AS-i Floating Bus: How a Hidden Ground Fault Can Bring Down Your Network
- Getting Started with the Siemens Safety PLC
Core question: How do I wire, install, or fix this?
Engineer
Engineer articles focus on control design and system behavior.
Hardware basics are assumed.
Examples:
- PLC scan timing and response
- PID tuning
- structured control logic
- state‑machine architectures
Core question: How should this system be designed?
System Integrator
System‑integrator articles address large automation systems.
Multiple PLCs, networks, distributed I/O, and long equipment lifecycles.
Examples:
- Scalable Modbus Architecture in TIA Portal: The Nth Device Strategy
- communication strategies
- large program organization
- long‑term maintainability
Core question: How do you design a system that still works ten years from now?
Overlap Is Normal
Real systems rarely fit one category.
Technicians may read engineer articles to understand system behavior. Engineers often revisit fundamentals while troubleshooting.
Automation rewards people who understand both theory and practice.
Using the Icons
When browsing the Field Guide:
- Start near your current experience level
- Move upward as your knowledge grows
- Read outside your level when the topic interests you
Goal: move from curiosity → competence → mastery.
In practice people move between these roles constantly. The best engineers still understand the wiring inside the panel.