I was wondering if it is possible to tell the Tag to listen/ communicate with certain Anchors only.
In other words, can we modify the Tag’s firmware to make it communicate to certain anchors and not others? (in a large area where multiple anchors are present)
This is not supported by the default firmware, and I don’t think there is any way you can modify the anchor selection.
You could explore using a different PAN id for clusters and anchors and creating a user app in the tag firmware allowing it to change it’s pan id depending on the anchors you want it to range it. It is a bit of a hack though, but I don’t think there is another wya to perform what you wan twith PANS.