Being the only automation person in a factory can accelerate your career faster than almost any formal course.
You may work with PLCs, HMIs, drives, industrial networks, electrical drawings, sensors, robots, and production data in the same week. You quickly learn how the whole plant operates because every difficult control problem eventually reaches you.
It can also become an exhausting trap.
When nobody else understands the control systems, every breakdown becomes your problem. You may receive calls during lunch, at night, on weekends, and while on holiday. Small program changes get treated as emergencies. Documentation is neglected because production wants the machine running immediately.
The goal is not to become the hero who fixes everything personally. The goal is to make the plant less dependent on one person—including you.
Build a Complete Backup System First
Your first priority should be securing the plant’s automation software.
Create an inventory containing:
- Every PLC and HMI
- Programming software and version
- CPU and firmware version
- IP address and device name
- Latest verified backup
- Drive and servo parameters
- Safety-controller programs
- Required passwords and licences
- Programming cables and adapters
Do not assume that a file named Machine_Final_New_2 is the correct backup. Connect to the controller, compare the project, and record when the backup was verified.
Keep at least two protected copies in approved company storage. The only working program should never exist solely on your laptop.
Include instructions explaining how to open each project. A backup is not useful if it requires an old software version, unavailable licence, forgotten password, or programming cable nobody can find.
Stop Making Invisible Changes
In a pressured breakdown, it is tempting to connect to the PLC, modify one network, restart the machine, and move on.
That habit eventually creates confusion.
Record every meaningful software change. The record does not need to be complicated. Include:
- Date
- Machine
- Person making the change
- Reason for the change
- Program section modified
- Backup name
- Testing performed
- Person approving the change
Add comments inside the program where appropriate. Save a new revision instead of overwriting the only known working copy.
Without change control, you may later investigate a fault caused by a modification you no longer remember making.
Create Diagnostic Tools for Other Technicians
You should not be called every time a motor fails to start.
Build HMI diagnostic screens that show the conditions required for common equipment to run. For a conveyor motor, this might include:
- Automatic mode active
- Safety circuit healthy
- Motor overload healthy
- VFD ready
- Downstream conveyor available
- No jam detected
- Start command present
- PLC output active
This allows maintenance technicians to identify whether the problem is electrical, mechanical, operational, or software-related.
Write short fault-finding guides for recurring problems. A one-page checklist titled “Conveyor Will Not Start” may save dozens of unnecessary calls.
Train electricians and maintenance technicians to use PLC status information safely. They do not need permission to modify programs, but they should understand how to inspect inputs, outputs, alarms, and interlocks.
The objective is not to make everyone a PLC programmer. It is to prevent every fault from being escalated immediately.
Define What Counts as an Emergency
When you are the only specialist, everything starts to sound urgent.
A stopped production line may be urgent. A manager wanting an HMI button moved before tomorrow’s meeting is not the same type of problem.
Agree on a basic priority system:
- Critical: Production stopped, safety concern, or major equipment unavailable
- High: Serious degradation with a likely production impact
- Normal: Modification, improvement, or non-critical fault
- Planned: Upgrade, optimisation, documentation, or new feature
Require requests to be recorded through the maintenance system, email, or another visible channel.
If people can assign you work verbally in the corridor, your workload becomes impossible to track. Later, every department believes its request should have been completed first.
Do Not Let Temporary Fixes Become Permanent
Factories often need temporary solutions to restart production. The danger is that a bypass installed at 2:00 a.m. remains in service for three years.
When a temporary measure is necessary, document it clearly and create a follow-up task immediately.
Record:
- What was changed
- Why it was necessary
- What risk remains
- What permanent repair is required
- Who approved the temporary condition
- When it must be reviewed
Never bypass safety functions merely to restore production. If you are pressured to make an unsafe change, document the request and escalate it.
Production pressure does not transfer engineering responsibility away from the person making the modification.
Protect Time for Preventive Work
If you spend every day reacting to breakdowns, the plant becomes increasingly fragile.
Reserve scheduled time for:
- Verifying backups
- Updating drawings
- Replacing obsolete components
- Reviewing recurring faults
- Checking network health
- Standardising software
- Improving alarms
- Training colleagues
- Testing spare hardware
Even a few protected hours each week can reduce future emergency calls.
Management may resist because preventive work does not always produce visible output. Explain the risk in business terms. A missing PLC backup is not an administrative inconvenience—it can turn a one-hour hardware replacement into days of downtime.
Standardise Everything You Can
A plant becomes difficult to support when every machine uses different programming styles, alarm structures, passwords, network ranges, and component brands.
You may not be able to rebuild old machines, but new projects should follow common standards.
Create templates for:
- Motor and valve control blocks
- Alarm handling
- Manual and automatic modes
- HMI navigation
- Tag naming
- IP addressing
- Backup folders
- Software revision notes
- Factory acceptance tests
Standardisation reduces troubleshooting time and makes it easier for another engineer to understand the system later.
Do not create unnecessarily complicated frameworks that only you understand. A simple and consistent standard is better than an advanced architecture nobody else can maintain.
Build External Support Before You Need It
Identify trustworthy external integrators, manufacturer support contacts, and local automation contractors.
Know who can assist with each major platform used in the plant. Keep current contact details, support agreements, software information, and machine documentation accessible.
This is particularly important for safety PLCs, robots, motion systems, obsolete controllers, and specialised process equipment.
You should not first begin searching for external help while the main production line is already stopped.
Set Boundaries Around Availability
Being the only automation specialist does not mean being available every hour of the year.
Clarify:
- Whether you are officially on call
- When you must answer
- How callouts are paid
- Who decides whether a problem requires your attendance
- Who covers your holidays
- What happens when you are unreachable
If the company expects continuous support, it needs a formal support arrangement. One person with a mobile phone is not a reliable 24/7 maintenance strategy.
Avoid solving every non-critical problem remotely after hours. Each time you do, you teach the organisation that proper coverage is unnecessary.
Make the Risk Visible to Management
Do not complain only that you are busy. Explain the operational risk created by single-person dependency.
Prepare a simple list:
- Systems only you can support
- Missing or unverified backups
- Unsupported software versions
- Obsolete PLC hardware
- Machines without drawings
- Lack of holiday coverage
- Critical knowledge not documented
- Training required by other technicians
Present practical solutions rather than only problems. These might include cross-training, external support contracts, spare hardware, scheduled documentation time, or hiring another automation technician.
The Real Survival Strategy
Being the only automation person becomes dangerous when your value depends on remaining the only person who understands anything.
The stronger approach is the opposite.
Document what you know. Train other technicians. Build useful diagnostics. Standardise software. Create reliable backups. Establish external support and make responsibilities visible.
You may worry that sharing knowledge makes you less valuable. In practice, the person who turns fragile systems into maintainable ones is usually more valuable than the person who keeps every solution inside their own head.
Your job is not merely to restart machines. It is to build an automation environment that can continue operating even when you are asleep, sick, or finally taking a proper holiday.