Why PLC Programming Is One of the Best Career Moves You Can Make
Programmable Logic Controllers (PLCs) are the computers that run factories, power plants, water treatment facilities, oil refineries, and virtually every automated industrial process in the world. Learning to program PLCs opens the door to a career with strong demand, excellent pay ($65,000-$120,000+), geographic flexibility, and long-term stability. If you are mechanically inclined, enjoy problem-solving, and want a career that cannot be outsourced, PLC programming deserves serious consideration.
The U.S. Bureau of Labor Statistics projects 6% growth in industrial machinery mechanics and 7% growth in electrical and electronics engineering roles through 2032. Industry surveys from ISA and CSIA consistently rank PLC programmers among the most difficult positions to fill. The talent gap is real and growing as experienced programmers retire faster than new ones enter the field.
What Does a PLC Programmer Actually Do?
PLC programmers write the logic that controls physical processes. A packaging line PLC program manages conveyor speeds, fill weights, cap torques, label placement, and carton forming — all coordinated to run at hundreds of units per minute with minimal waste. A water treatment plant PLC program controls pump sequences, chemical dosing, filtration cycles, and regulatory reporting.
Day-to-day work includes writing ladder logic and structured text programs, configuring Human-Machine Interfaces (HMIs), troubleshooting electrical and mechanical issues on the production floor, commissioning new equipment, and modifying existing programs to accommodate process changes. It is a blend of office-based programming and hands-on fieldwork that appeals to people who do not want to sit at a desk all day.
Education Paths: Community College vs. 4-Year Degree vs. Self-Taught
Community College / Technical School (Recommended Starting Point): Two-year programs in electrical technology, industrial automation, mechatronics, or instrumentation provide the strongest practical foundation. Programs at schools like Dunwoody College of Technology (MN), Lake Area Technical College (SD), Forsyth Tech (NC), and Washtenaw Community College (MI) combine classroom instruction with hands-on lab time on actual PLC hardware.
Typical curriculum includes: electrical theory, motor controls, PLC programming (usually Allen Bradley), industrial networking, pneumatics and hydraulics, and an internship or co-op placement. Total cost: $8,000-$25,000. Duration: 18-24 months. Job placement rates at top programs exceed 90%.
Four-Year Degree (Electrical or Mechanical Engineering): A bachelor's degree provides deeper theoretical knowledge and opens doors to engineering roles with higher salary ceilings. Electrical engineering with a controls emphasis is the most directly applicable. However, many BSEE graduates report that their programs focused heavily on theory and provided limited PLC hands-on experience. Supplementing a degree with PLC certification courses is strongly recommended.
Self-Taught / Career Changers: It is entirely possible to learn PLC programming independently using affordable training PLCs, online courses, and simulation software. Allen Bradley Micro800 PLCs with Connected Components Workbench (free software) provide a low-cost entry point. Siemens offers the SIMATIC S7-1200 Starter Kit with TIA Portal. Online platforms like Udemy, LinkedIn Learning, and RealPars offer PLC programming courses ranging from free to $200.
Which PLC Platform to Learn First
This is the most common question from beginners, and the answer depends on your geographic market:
- Allen Bradley (Rockwell Automation): Dominant in North America. Studio 5000 / RSLogix 5000 for ControlLogix/CompactLogix, Connected Components Workbench for Micro800. Learn this first if you are in the U.S. or Canada.
- Siemens: Dominant in Europe, growing in North America. TIA Portal with S7-1200/S7-1500. Learn this second or first if you are in a Siemens-heavy market (automotive, pharmaceutical).
- Mitsubishi: Strong in Asia and in specific U.S. industries. GX Works3 with iQ-R/iQ-F series. Important for automotive tier suppliers.
- Other platforms: Omron (Sysmac Studio), Schneider Electric (EcoStruxure Machine Expert), Beckhoff (TwinCAT 3). Learn these after establishing Allen Bradley or Siemens proficiency.
The fundamentals of PLC programming — ladder logic, structured text, function blocks, I/O configuration, data types, and communication protocols — transfer between platforms. Once you know one platform well, learning a second takes weeks rather than months.
Essential Skills Beyond PLC Programming
Employers look for more than just the ability to write ladder logic. The most employable PLC programmers also have:
- Electrical troubleshooting: Reading schematics, using multimeters and meggars, understanding motor controls, and working safely around industrial voltages.
- HMI development: FactoryTalk View, WinCC, Ignition, Wonderware. The HMI is how operators interact with your code.
- Industrial networking: EtherNet/IP, PROFINET, Modbus TCP, DeviceNet, IO-Link. Modern automation is networked.
- VFD configuration: Variable frequency drives are on nearly every conveyor, pump, and fan. Allen Bradley PowerFlex and Siemens SINAMICS are most common.
- Safety systems: GuardLogix (Allen Bradley), Safety Integrated (Siemens). Safety PLC programming is a premium skill.
- Version control and documentation: Maintaining code standards, documenting programs, and managing revisions is essential for professional work.
Certifications That Matter
Industry certifications validate your skills and can accelerate hiring and compensation:
- Rockwell Automation Certifications: Available at multiple levels through Rockwell's training program. Recognized across North America.
- Siemens Certified Professional: SCE (Siemens Certification Program) validates TIA Portal and S7 proficiency.
- ISA Certified Automation Professional (CAP): Broad automation certification from the International Society of Automation. Requires experience.
- ISA Certified Control Systems Technician (CCST): Three levels (I, II, III) for instrumentation and controls technicians.
- OSHA 10/30: Not PLC-specific, but required or preferred by most employers and essential for job site safety.
Landing Your First PLC Job
The most effective path to your first PLC programming position:
- Complete a formal program (community college or intensive bootcamp) that includes hands-on lab time.
- Build a portfolio — document projects with photos, videos, and code samples. Even training lab projects count.
- Get certified — at minimum, complete Rockwell or Siemens entry-level certifications.
- Apply broadly — system integrators (SIs) are the best entry point. They work on diverse projects and will train motivated beginners. CSIA's member directory lists hundreds of integrators across the U.S.
- Consider contract work — contract positions through staffing platforms like Automate America let you gain diverse experience quickly while earning competitive rates.
The demand is real, the pay is strong, and the career path is clear. PLC programming combines problem-solving, hands-on work, and technology in a way that few other careers can match. The hardest part is getting started — and you have already taken the first step by reading this guide.
