History¶

The History module provides graphical views of logged signal data. Signals can be plotted in a project-wide chart, in a chart scoped to a specific workview, or from within any object popup.

All three views are built on the same chart component and share the same controls for selecting signals, adjusting the time range and scale the y-axis.

Contents¶

Get started¶

• The History View — Layout of the chart and control panels.
• Selecting Signals — How to pick signals from the tree and apply them to the chart.
• Settings — Time interval, update interval and display toggles.
• View-Specific History — History scoped to a single workview.
• Object Popup — Viewing history for a single object.

Configuring¶

• Tracking a Signal — Keeping the chart centred on a moving signal value.
• Saved Signal Groups — Saving and loading named sets of signals.

Extending¶

• Opening View-Specific History — Script for opening the view-scoped history popup from a workview.
• Signals Not Logged — Showing signals that exist but are not being logged.

Troubleshooting¶

• Common Issues — Common issues and how to fix them.