Mitsubishi Electric MELSEC iQ-R Series Introduction Manual page 64

Checking the changes of waveform data (GX LogViewer)
Display the devices/labels selected in the monitor screen of the offline monitor function in a graph in GX LogViewer.
Operating procedure
1.
Select a device in the program editor or watch window.
2.
Select the waveform display.
Right-click shortcut menu  [Wave Display]
3.
The "Historical Trend" window of GX LogViewer is displayed.
Precautions
Up to 32 devices/labels can be registered to GX LogViewer.
7 CHECKING RECORDED RECORDING FILES
63
7.1 Reproducing the Trouble Situation
Select the device.