Hydrotherapy Treadmill HMI

Built

• Web Forms AJAX bridge to PLC register/coil writes.
• 100 ms polling, press-and-hold safety UX, and XML-persisted presets/ratios.
• Bundled EasyModbus stack and diagnostics tooling.

Architecture

• Device-first mapping between UI controls and PLC registers/coils.
• Self-contained on-prem deployment with minimal dependencies.
• Trusted-network assumptions documented explicitly.

Operations

• Simple deployment on an on-prem web server.
• Operator-focused recovery and diagnostics.
• Trade-offs accepted around security and scalability for a closed environment.

Technology Stack