i want to make an end device to coordiator node when needed .its is possible to switch an end device to become a coordinator node using at commandd sent to it via arduino program
Sure it can.
Yes.
For Coordinator: Set CE=0x1 and SM=0x0
For Router : Set CE=0x0 and SM=0x0
For End Device : Set CE=0x0 and SM=
Mathur
Digi Support