consecutive change on same address not reflecting in node slave client

[snowflaxgit]

Hi,
I face issue below,we are using #4
READ_INPUT_REGISTERS slave client
Server is modbus hardware.

Step1 - read register x having address M.we got value a.
We are able to received value a at register x when app started initially

Step 2- make app running .

Step 3 - now change value at register x from a to b. Modbus hardware had new value b written.
But node app not reflecting responce event in realtime.

We are not able to received changes instantly on same register from master.

If I restart a app. Than only client slave app get fresh value.it does not reflect data in responce once it changed.

Please help.