Modbus master does not read holding register

[Yixiao-uncle]

Hello everyone.
I created a simple VI with Modbus master and slave that write and read holding registers. Unfortunately I cannot read the values ​​written (in the same vi) with the slave with the master.
Any suggestions?
Thank you

A

[LVNinja]

Can you save it for 2020 ?

[Yixiao-uncle]

Here ver. 2020.

Thank you

[cordm]

What is the error message?

Make sure the slave starts before the master. Wire the error out terminal of the slave to the error in terminal of the master.

[Yixiao-uncle]

The values ​​read by the master are always 0.

Thank you

A