Modbus Extension vs RS485 Extension

[Gast]

Hello!

What is a difference between Modbus Extension and RS485 Extension? Could the RS485 Extension be used instead of the Modbus Extension? Modbus uses RS485 as an electrical interface.
I am asking because Modbus Extension is not currently available in the online store.

[Loxtom577]

The Modbus extension supports the Modbus RTU protocol, the RS485 extension does not.