I have Twido : TWDLCAA24DRF and HMI : XBTPM027110, I want to do a communication between the PLC and the HMI through an adapter TWDNAC485D Is it Valid ?

I have attached technical note for HMI and twido communication and refer  page 6 for  connector pin diagram of XBTPM HMI.

In same technote  refer from page 15 onwards for interfacing twido and HMI and settings communication paramters.

Well this seems to be a old twido software but in new software you need to configure one Generic HMI as master and then connect it to the second port of TWIDO with 9 pin mini din adaptor and do slave id settings on remote link.
I have attached a snapshot of it .  Make sure you configure slave ID as 2.

At last most important thing is communication settings has to be identical and Check if the memory location is declared (used) in the application program.
If its not used and you try to read them inside HMI you wont be able to communicate.