Online Mode — Live Variable Monitoring
Real-time variable monitoring and live value inspection while the PLC is running, streamed to the browser over WebSocket.
This video was recorded while the product was called GOPLC. The on-screen branding differs from the current name; the runtime is the same one.
Online mode is one of the most-used features in any PLC environment. ControlForge streams live variable values straight to the browser over WebSocket, giving real-time visibility into running programs.
What Online Mode Provides
- Live values inline next to variable declarations and assignments
- Data types colour-coded for quick identification
- Arrays and structures expandable to inspect individual elements
- Update rate configurable, to trade detail against performance
- Multiple users monitoring simultaneously from different browsers
Compared to Traditional PLCs
In a traditional Rockwell or Siemens environment, online monitoring requires the vendor’s engineering software installed on a specific workstation. The web-based approach means anyone with network access and a browser can watch the running system — from a tablet on the plant floor to a laptop in the control room.