Things I Learned from Real HMI/SCADA Projects
Project notes about naming, alarms, screenshots, networking, commissioning, backups, and documentation habits that matter later.
Drawings drift
Network diagrams, tag lists, and panel drawings drift unless updating them is part of the project workflow. Capture changes during commissioning, not months later.
Screens are not documentation
A good HMI screen helps operations, but it does not replace tag documentation, alarm rationale, backup procedures, or recovery notes.
Alarm quality shows project quality
Messy alarms reveal unclear responsibility, poor testing, and weak operational review. Fixing alarm design early saves pain later.
Backups need restore tests
A backup that has never been restored is only a hope. Keep copies of applications, licenses, configuration, certificates, scripts, and deployment notes.
Naming becomes infrastructure
Tag and device names spread into trends, reports, scripts, screenshots, training materials, and conversations. Choose names as if they will be read for ten years.
Commissioning notes are gold
Keep a project log of odd device behavior, protocol quirks, temporary bypasses, and final fixes. Future troubleshooting often starts with those notes.