Creating Modbus Server Communication with Client

I want to create a modbus server (with local host : ip address : 152.168.96.11 - same as the system) and the modbus client has (ip address : 152.168.96.32). My client application is running and i am creating the modbus server application with the umodbus server application. Data exchange of 32 bits (either read or write for testing purpose). Slave Id : 1 and Port : 255

How do i configure python umodbus server with server able to read and write data into the client ip address

Here is the umodbus server application -

#!/usr/bin/env python
# scripts/examples/simple_tcp_server.py
import random
import logging
from socketserver import TCPServer
from collections import defaultdict

from umodbus import conf
from umodbus.server.tcp import RequestHandler, get_server
from umodbus.utils import log_to_stream

# Create Random Values
rndata = []
for i in range(32):
    rndata.append(random.randint(1,32))

# Add stream handler to logger 'uModbus'.
log_to_stream(level=logging.DEBUG)

# A very simple data store which maps addresss against their values.
data_store = defaultdict(int)

# Enable values to be signed (default is False).
conf.SIGNED_VALUES = True

TCPServer.allow_reuse_address = True
app = get_server(TCPServer, ('152.168.96.11', 255), RequestHandler)


@app.route(slave_ids=[1], function_codes=[3, 4], addresses=list(range(0, 32)))
def read_data_store(slave_id, function_code, address):
    """" Return value of address. """
    return data_store[address]


@app.route(slave_ids=[1], function_codes=[6, 16], addresses=list(range(0, 32)))
def write_data_store(slave_id, function_code, address, value):
    """" Set value for address. """
    data_store[address] = value

# Configuring the Data
write_data_store(1,16,3,784)
write_data_store(1,16,24,678)
rdata1 = read_data_store(1,4,3)
print(rdata1)
rdata2 = read_data_store(1,4,24)
print(rdata2)

if __name__ == '__main__':
    try:
        app.serve_forever()
        print(rdata1)
    finally:
        app.shutdown()
        app.server_close()

[OrangeTux]

@rahimdzb Modbus requests for slave 1, using function code 3 or 4, addressing registers 0 till 32 will be executed by this callback.

[rahimdzb]

Sir can you tell me what’s happening exactly in this function ( get_server(Tcpserver,(‘localhost’,502),RequestHandler)