Introduction
I am an ordinary maintenance electrician, just like my colleagues, wearing oil-stained work clothes every day, carrying a multimeter and screwdriver, and moving around the workshop. My monthly salary was 5000 yuan, doing basic tasks like wiring, replacing contactors, and repairing lighting circuits.
Over the years, I have explored many avenues and finally found my own path. Let me be honest: why did I venture into PLCs? The answer is simple: to make money.
Now, I have achieved a monthly salary of 30000 yuan. Throughout this journey, I have come to realize that the real difference is not in years of experience, but in mindset. Today, I want to share the four key strategies that helped me achieve this transformation through “anti-pattern thinking” in PLCs, hoping to inspire my fellow colleagues who are still searching for direction.
Node One: Abandon Blindly Learning Instructions, Focus on High-Frequency Essential Skills (Countering the “Jack of All Trades” Trap)
1. 【Traditional Thinking】
“Want to learn PLC? You need to understand all the instructions!” Many people start with a thick programming manual, tackling each instruction one by one, trying to cram the entire instruction set into their heads. The result? After six months, they feel they understand a little of everything, but when faced with real problems, they still don’t know where to start. This “jack of all trades” learning approach is the most inefficient trap.
2. 【My Counter-Pattern Thinking】
“Learn as needed, first solve 80% of common problems.”
When I first started learning PLCs, I fell into this trap too. Later, I asked myself a crucial question: “What are the most common equipment control needs I encounter in my daily work?” The answer was: starting and stopping motors, forward and reverse rotation, star-delta soft start; signal detection from sensors (photoelectric, proximity switches); extending and retracting cylinders; simple counting and timing.
So, I made a decision: temporarily abandon those complex advanced instructions and focus on mastering this “high-frequency essential” 20% of skills.
I thoroughly learned the basic instructions: not just knowing what LD and OUT are, but deeply understanding their logical relationships in circuits. I repeatedly compared ladder diagrams with electrical schematics until I could “translate” them directly in my mind.
I practiced several classic programs: I wrote the classic programs for motor forward and reverse, and star-delta starting no less than 100 times. From the simplest logic to adding interlocks, protections, and fault alarms, I continuously optimized until these programs were etched in my mind like muscle memory.
I learned with questions: Whenever there was a fault in the workshop equipment involving PLCs, I rushed over immediately. While others waited for the repair technician, I analyzed the program to determine which logical point was problematic. I recorded these issues and later studied the relevant instructions accordingly.
3. Result:
In less than three months, I could independently handle most simple faults related to PLCs in the workshop. The sense of accomplishment I felt when I could quickly get a stopped machine running again was far stronger than memorizing 100 obscure instructions.
More importantly, I gained my supervisor’s first recognition, and my salary saw its first substantial increase. Remember, the value of skills lies not in how much you “know,” but in how many problems you can “solve.”
Node Two: Learn from Faults, Accumulate Experience in Practice (Countering the “Book Knowledge” Trap)
1. 【Traditional Thinking】
“I’ll sign up for a training course and solidify the theory before getting hands-on.” Many believe they must finish all theoretical learning before practicing. They fear making mistakes and damaging equipment, resulting in them remaining in the “theoretical king” stage. PLC programming is a highly practical skill; mere theory will lead to nothing.
2. 【My Counter-Pattern Thinking】
“Faults are the best teachers; every downtime is a paid learning opportunity.”
I firmly believe that books and videos teach you “dead knowledge,” while real fault scenarios teach you “living experience.” My growth has almost always been accompanied by a “thrilling” fault.
Proactively “take on tasks” to create opportunities: When complex PLC-related issues arise in the workshop, senior engineers are often overwhelmed, and newcomers tend to stay away.
However, I always stepped forward, handed over tools, assisted, and cautiously asked, “Engineer Wang, do you think there’s a logic issue here? Can I follow you to check the program?” Over time, everyone recognized my eagerness to learn and welcomed my participation.
Deeply review and establish a “fault case database”: Every time I resolved a fault, I would do three things:
a. Record: Detail the fault symptoms, troubleshooting process, final cause, and solution.
b. Analyze: Reflect on “Why did this problem occur?” “Was it a flaw in the program logic, improper hardware selection, or external interference?” “If I encounter this again, how can I locate it faster?”
c. Archive: I organized these cases into my own “manual,” categorized by fault type. Over time, I built a powerful “fault database” in my mind, allowing me to quickly match new problems with similar cases and draw parallels.
Dare to experiment and grow through simulation: I knew I couldn’t experiment on production equipment. So, I utilized my breaks to repeatedly simulate various fault scenarios on old equipment or a simple experimental setup I built myself.
For example, I intentionally disconnected a sensor signal to see how the program reacted; I modified timer settings to observe changes in equipment actions. This “destructive” testing elevated my understanding of the program from “knowing” to “mastery.”
3. Result:
Once, a core imported machine in the company suddenly stopped, and the manufacturer’s engineer wouldn’t arrive for a week, costing thousands of yuan daily. While everyone was at a loss, I stepped up. Drawing on my accumulated “fault case database,” I deduced that a signal module was interfered with, causing data drift that triggered the protection logic.
By adding filtering programs and optimizing grounding, I restored production in just two hours. At that moment, I was no longer just a “maintenance worker” but a “hero” of the company. After this incident, my salary doubled, and I was promoted to equipment technical supervisor.
Remember, experience is not learned; it is “cultivated.” Every fault you personally resolve becomes the most solid stepping stone in your career.
Node Three: Package Work Achievements, Build Personal Core Competitiveness (Countering the “Head-Down Work” Trap)
1. 【Traditional Thinking】
“As long as my skills are good, the quality will speak for itself.” Many technical professionals fall into this misconception, believing that as long as their skills are solid, their leaders will naturally notice. The reality is that leaders are busy and cannot always pay attention to you. If you accomplish 100 tasks but only you know about them, your leader may think you’ve done only 10 or even none.
2. 【My Counter-Pattern Thinking】
“Not only must you be able to do, but you must also be able to speak, write, and present, making your value visible.”
When I became a technical supervisor, I realized that I not only needed to solve technical problems but also report upwards and manage downwards. At this point, the importance of “packaging” skills became evident. This “packaging” is not about boasting but systematically and visually presenting your work value.
From “I fixed it” to “Problem Analysis and Solution Report”: Previously, I would just verbally report, “It’s done” after fixing equipment. Later, after handling significant faults, I began writing brief reports that included:
Fault Background: Equipment name, downtime, and losses incurred.
Cause Analysis: Clearly display the troubleshooting thought process and final root cause with visuals.
Solution: Detail the measures I took and the rationale behind them.
Preventive Suggestions: Propose how to avoid similar issues in the future (e.g., program optimization, inspection standard updates, etc.).
This report not only reflects my technical ability but also showcases my logical thinking and sense of responsibility.
From “programming” to “standardization and knowledge transfer”: I began packaging commonly used, mature program segments into standardized function blocks (FB) and writing detailed user documentation. I also organized internal training sessions to teach my summarized experiences and skills to other team members. This not only improved the overall efficiency of the team but also established my expert image within the team, making me an indispensable core member.
Quantify your contributions: I record the benefits brought by each technical improvement. For example, “By optimizing the PLC program for XX equipment, the product qualification rate increased from 95% to 98.5%, saving the company approximately XX yuan annually”; “By designing a new automatic feeding system, I reduced two operator positions, saving labor costs of XX yuan annually.” These cold numbers are more persuasive than any flowery language.
3. Result:
When the company selects outstanding employees for the year, considers raises, or promotions, my name is always the first mentioned. Because my value is clear and quantifiable. My work achievements have transformed from “one-time repairs” into “replicable assets” and “sustained benefits.” This has allowed me to transition from a “high-salary technician” to a “value creator,” with my monthly salary surpassing 20000 and approaching 30000.
Remember, in the workplace, you must not only be an excellent “actor” but also a smart “director,” knowing how to perfectly present your “work” to your leaders and the company.
Node Four: Seize Industry Trends, Continuously Expand Skill Boundaries (Countering the “Stagnation” Trap)
1. 【Traditional Thinking】
“I’m already proficient in PLCs; that’s enough for a lifetime.” Technology is evolving rapidly, and the industrial field is changing day by day. If you are satisfied with the status quo and rest on past laurels, you will soon be eliminated by the times. What is “hot” today may become “obsolete” tomorrow.
2. 【My Counter-Pattern Thinking】
“Look beyond PLCs, view problems from the perspective of automation systems, embrace change, and become a T-shaped talent.”
After my monthly salary reached 20000, I did not stop learning. I keenly observed that Industry 4.0, smart manufacturing, and the industrial internet are becoming new trends. Simple PLC programming can no longer meet the needs of future factories.
Extend upwards, learn “data”: I began learning SCADA (Supervisory Control and Data Acquisition) and MES (Manufacturing Execution System). I understood that PLCs are at the execution layer, while SCADA and MES are at the management and data layers. I learned how to collect PLC data, monitor and alarm on the SCADA interface, and gained a preliminary understanding of how to interface with MES systems for production data traceability and analysis. This gave me a holistic view from “equipment control” to “production management.”
Expand horizontally, learn “networking”: Modern automation relies on industrial networks. I proactively learned industrial Ethernet (such as Profinet, EtherNet/IP), OPC UA, and other communication protocols. I no longer satisfied myself with controlling a single device but began researching how to enable efficient and stable communication between multiple devices and PLCs, constructing a complete production line network.
Cross-disciplinary integration, learn “IT”: I even began to touch on some basic IT knowledge, such as databases (SQL) and Python scripting. I realized that future automation engineers must be integrators of “OT (Operational Technology)” and “IT (Information Technology).” Writing a small Python script to automatically process production reports exported from PLCs has made me adept at solving complex problems.
3. Result:
The company needed a leader for a “digital factory” transformation project, someone who understood both PLC control and data collection and system integration. Looking across the company, I was the only one with these cross-disciplinary skills.
I naturally became the core leader of this project, overseeing the entire process from design to implementation. After the project’s success, my position was elevated again, and I became the manager of the automation department, with my monthly salary firmly reaching the 30000 yuan mark.
Remember, your value depends on what “level” of problems you solve. Solving issues with a single device is worth 5000; solving problems for an entire production line is worth 10000; solving the entire factory’s digital issues is worth 30000 or even more.
Conclusion: The Transformation is Never Accidental
Looking back at my journey from 5000 to 30000, it was not just luck that got me here. These four nodes represent milestones where I broke conventions and took proactive steps using “anti-pattern thinking.”
Finally, I want to say: The salary ceiling in the PLC industry is never about the technology itself. Those engineers earning high salaries are simply the ones who have taken a few more steps, seeing through the essence of the industry, and translating solutions into business value.
I hope my experiences can inspire my peers, helping everyone navigate their career paths more smoothly and achieve their dreams.
Feel free to leave comments and engage in discussions!
