I will check how can I improve the topology, but unfortunately I wasn't the starter of modbus network and so because everything was working properly I wasn't searching for a bad topology. This is my first project with modbus. Thanks for your help, all of you
But last question(from my curiosity
):
Is it has matter that first slave from master has an address 1 and second 2 etc. or not?

But last question(from my curiosity

Is it has matter that first slave from master has an address 1 and second 2 etc. or not?