Controls and IT stopped being separate problems
The plant floor used to be genuinely isolated. It is not any more. Your PLCs talk to a historian, the historian feeds a dashboard, the dashboard is reachable from home, and a vendor has a remote support tunnel into a panel nobody has audited since it was commissioned. That is a single system now, and it is usually being maintained by two groups who do not talk to each other.
We do both sides. The same team writes the logic, runs the network it rides on and secures the boundary between the process and the business.
Where this work usually starts
Rarely with a greenfield line. It is normally one of these:
- A machine or process that stops and nobody knows why. We instrument it before we recommend anything, because the cause is frequently not where the symptom is.
- A control system whose programmer is gone. No current drawings, no commented code, no backup of the program. This is the most common and most urgent version, because you are one failure away from a very expensive week.
- Data trapped at the HMI. The information exists, but it reaches the office as somebody’s handwritten tally at the end of a shift.
- A process that no product covers. Something specific to how you work, where the off the shelf options each get you about seventy percent of the way.
Custom is a last resort, and sometimes the right one
We say this on the software side of the business and it applies twice as hard here: most problems are solved better and cheaper by configuring something that already exists. Custom control code is an asset you have to own and maintain for as long as the process runs.
It earns its cost when the standard product genuinely does not fit, when the workaround has become a person doing something by hand every shift, or when the integration between two systems is where the value lives. When that is the situation, custom is what we build, and we build it documented well enough that keeping us is a choice rather than a dependency.
Municipal and agricultural work
Water and wastewater districts, public works and treatment facilities run the same technology as a plant floor under different obligations: public procurement, records retention, and a failure mode that makes the local paper. We scope and document that work accordingly.
Agricultural and controlled environment operations have the opposite constraint. The process is forgiving of a few minutes and completely unforgiving of a few days, the equipment lives in dust and damp, and the network has to cross distances that indoor gear was never specified for. What matters there is coverage, hardware chosen for the conditions, and alerting that still reaches somebody when the link drops.