Campbell Scientific PC400 Datalogger Support Software - Manual (Page 48)

Section 4. The PC400 Main Screen
4-24
4.5.4.4.5
devices can be unlocked by selecting View | Unlock All Positions from the
menu.
Discovering Probable Routes between Devices
You can view the probable route that communication will take between two
PakBus devices by sequentially clicking on the two devices in PakBus Graph.
The probable communication route will be highlighted in cyan. If the Show
Hop Metrics check box is selected, the graph will include the time, in
milliseconds, that communication takes between the two devices. The results
are also displayed in the Log Messages portion of the window.