pymodbus with external database

[b4651281]

Hi,
I am using pymodbus version 3.12.1 to implement an async tcp server. In my application, I have a wrapper where when there is read or write request from a client, the async_getValues() and async_setValues() callback functions are modified to do a database read or write and respond correspondingly. Now with introduction of SimData and SimDevice, these functions in ModbusServerContext are going to be deprecated and removed from v4.

There is an alternative where I update the device and the data in it at regular intervals. However, an interval based database search in order to update the device is not efficient. If I want the DB search to be based on request, is there any alternative solution available or anything that I am missing ?

[janiversen]

they are not obsolete just moved to the server!

sim_device allows you to add a action() which is called with every request, there you could do all the db manupulation you want.

[b4651281]

Thank you for the help!