They used different network protocols for wired and wireless because the radio in less reliable and physical different.
I expect you could start with a wireless network and use MAX485 chips in place of the radio units. With a some tweaking it could work.
Zigbee is a mesh network and much more complicated then CAN
I expect you could start with a wireless network and use MAX485 chips in place of the radio units. With a some tweaking it could work.
Zigbee is a mesh network and much more complicated then CAN