Initial commit for tac2100_compteur_mbus2mqtt

2025-01-03 14:53:06 +01:00
parent a75c5804ba
commit b61d43b62c
1728 changed files with 308235 additions and 0 deletions
@@ -0,0 +1,19 @@
+"""Client"""
+
+__all__ = [
+    "AsyncModbusSerialClient",
+    "AsyncModbusTcpClient",
+    "AsyncModbusTlsClient",
+    "AsyncModbusUdpClient",
+    "ModbusBaseClient",
+    "ModbusSerialClient",
+    "ModbusTcpClient",
+    "ModbusTlsClient",
+    "ModbusUdpClient",
+]
+
+from pymodbus.client.base import ModbusBaseClient
+from pymodbus.client.serial import AsyncModbusSerialClient, ModbusSerialClient
+from pymodbus.client.tcp import AsyncModbusTcpClient, ModbusTcpClient
+from pymodbus.client.tls import AsyncModbusTlsClient, ModbusTlsClient
+from pymodbus.client.udp import AsyncModbusUdpClient, ModbusUdpClient
@@ -0,0 +1,324 @@
+"""Base for all clients."""
+from __future__ import annotations
+
+import asyncio
+import socket
+from dataclasses import dataclass
+from typing import Any, Callable
+
+from pymodbus.client.mixin import ModbusClientMixin
+from pymodbus.exceptions import ConnectionException, ModbusIOException
+from pymodbus.factory import ClientDecoder
+from pymodbus.framer import ModbusFramer
+from pymodbus.logging import Log
+from pymodbus.pdu import ModbusRequest, ModbusResponse
+from pymodbus.transaction import DictTransactionManager
+from pymodbus.transport import CommParams, ModbusProtocol
+from pymodbus.utilities import ModbusTransactionState
+
+
+class ModbusBaseClient(ModbusClientMixin, ModbusProtocol):
+    """**ModbusBaseClient**
+
+    **Parameters common to all clients**:
+
+    :param framer: (optional) Modbus Framer class.
+    :param timeout: (optional) Timeout for a request, in seconds.
+    :param retries: (optional) Max number of retries per request.
+    :param retry_on_empty: (optional) Retry on empty response.
+    :param close_comm_on_error: (optional) Close connection on error.
+    :param strict: (optional) Strict timing, 1.5 character between requests.
+    :param broadcast_enable: (optional) True to treat id 0 as broadcast address.
+    :param reconnect_delay: (optional) Minimum delay in milliseconds before reconnecting.
+    :param reconnect_delay_max: (optional) Maximum delay in milliseconds before reconnecting.
+    :param on_reconnect_callback: (optional) Function that will be called just before a reconnection attempt.
+    :param no_resend_on_retry: (optional) Do not resend request when retrying due to missing response.
+    :param kwargs: (optional) Experimental parameters.
+
+    .. tip::
+        Common parameters and all external methods for all clients are documented here,
+        and not repeated with each client.
+
+    .. tip::
+        **reconnect_delay** doubles automatically with each unsuccessful connect, from
+        **reconnect_delay** to **reconnect_delay_max**.
+        Set `reconnect_delay=0` to avoid automatic reconnection.
+
+    :mod:`ModbusBaseClient` is normally not referenced outside :mod:`pymodbus`.
+
+    **Application methods, common to all clients**:
+    """
+
+    @dataclass
+    class _params:
+        """Parameter class."""
+
+        retries: int = None
+        retry_on_empty: bool = None
+        close_comm_on_error: bool = None
+        strict: bool = None
+        broadcast_enable: bool = None
+        reconnect_delay: int = None
+
+        source_address: tuple[str, int] = None
+
+        server_hostname: str = None
+
+    def __init__(  # pylint: disable=too-many-arguments
+        self,
+        framer: type[ModbusFramer] = None,
+        timeout: float = 3,
+        retries: int = 3,
+        retry_on_empty: bool = False,
+        close_comm_on_error: bool = False,
+        strict: bool = True,
+        broadcast_enable: bool = False,
+        reconnect_delay: float = 0.1,
+        reconnect_delay_max: float = 300,
+        on_reconnect_callback: Callable[[], None] | None = None,
+        no_resend_on_retry: bool = False,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize a client instance."""
+        ModbusClientMixin.__init__(self)
+        self.use_sync = kwargs.get("use_sync", False)
+        setup_params = CommParams(
+            comm_type=kwargs.get("CommType"),
+            comm_name="comm",
+            source_address=kwargs.get("source_address", ("0.0.0.0", 0)),
+            reconnect_delay=reconnect_delay,
+            reconnect_delay_max=reconnect_delay_max,
+            timeout_connect=timeout,
+            host=kwargs.get("host", None),
+            port=kwargs.get("port", 0),
+            sslctx=kwargs.get("sslctx", None),
+            baudrate=kwargs.get("baudrate", None),
+            bytesize=kwargs.get("bytesize", None),
+            parity=kwargs.get("parity", None),
+            stopbits=kwargs.get("stopbits", None),
+            handle_local_echo=kwargs.get("handle_local_echo", False),
+        )
+        if not self.use_sync:
+            ModbusProtocol.__init__(
+                self,
+                setup_params,
+                False,
+            )
+        else:
+            self.comm_params = setup_params
+        self.params = self._params()
+        self.params.retries = int(retries)
+        self.params.retry_on_empty = bool(retry_on_empty)
+        self.params.close_comm_on_error = bool(close_comm_on_error)
+        self.params.strict = bool(strict)
+        self.params.broadcast_enable = bool(broadcast_enable)
+        self.on_reconnect_callback = on_reconnect_callback
+        self.retry_on_empty: int = 0
+        self.no_resend_on_retry = no_resend_on_retry
+        self.slaves: list[int] = []
+
+        # Common variables.
+        self.framer = framer(ClientDecoder(), self)
+        self.transaction = DictTransactionManager(
+            self, retries=retries, retry_on_empty=retry_on_empty, **kwargs
+        )
+        self.reconnect_delay_current = self.params.reconnect_delay
+        self.use_udp = False
+        self.state = ModbusTransactionState.IDLE
+        self.last_frame_end: float = 0
+        self.silent_interval: float = 0
+
+    # ----------------------------------------------------------------------- #
+    # Client external interface
+    # ----------------------------------------------------------------------- #
+    @property
+    def connected(self):
+        """Connect internal."""
+        return True
+
+    def register(self, custom_response_class: ModbusResponse) -> None:
+        """Register a custom response class with the decoder (call **sync**).
+
+        :param custom_response_class: (optional) Modbus response class.
+        :raises MessageRegisterException: Check exception text.
+
+        Use register() to add non-standard responses (like e.g. a login prompt) and
+        have them interpreted automatically.
+        """
+        self.framer.decoder.register(custom_response_class)
+
+    def close(self, reconnect=False) -> None:
+        """Close connection."""
+        if reconnect:
+            self.connection_lost(asyncio.TimeoutError("Server not responding"))
+        else:
+            self.transport_close()
+
+    def idle_time(self) -> float:
+        """Time before initiating next transaction (call **sync**).
+
+        Applications can call message functions without checking idle_time(),
+        this is done automatically.
+        """
+        if self.last_frame_end is None or self.silent_interval is None:
+            return 0
+        return self.last_frame_end + self.silent_interval
+
+    def execute(self, request: ModbusRequest = None) -> ModbusResponse:
+        """Execute request and get response (call **sync/async**).
+
+        :param request: The request to process
+        :returns: The result of the request execution
+        :raises ConnectionException: Check exception text.
+        """
+        if self.use_sync:
+            if not self.connect():
+                raise ConnectionException(f"Failed to connect[{self!s}]")
+            return self.transaction.execute(request)
+        if not self.transport:
+            raise ConnectionException(f"Not connected[{self!s}]")
+        return self.async_execute(request)
+
+    # ----------------------------------------------------------------------- #
+    # Merged client methods
+    # ----------------------------------------------------------------------- #
+    async def async_execute(self, request=None):
+        """Execute requests asynchronously."""
+        request.transaction_id = self.transaction.getNextTID()
+        packet = self.framer.buildPacket(request)
+
+        count = 0
+        while count <= self.params.retries:
+            if not count or not self.no_resend_on_retry:
+                self.transport_send(packet)
+            if self.params.broadcast_enable and not request.slave_id:
+                resp = b"Broadcast write sent - no response expected"
+                break
+            try:
+                req = self._build_response(request.transaction_id)
+                resp = await asyncio.wait_for(
+                    req, timeout=self.comm_params.timeout_connect
+                )
+                break
+            except asyncio.exceptions.TimeoutError:
+                count += 1
+        if count > self.params.retries:
+            self.close(reconnect=True)
+            raise ModbusIOException(
+                f"ERROR: No response received after {self.params.retries} retries"
+            )
+
+        return resp
+
+    def callback_data(self, data: bytes, addr: tuple = None) -> int:
+        """Handle received data
+
+        returns number of bytes consumed
+        """
+        self.framer.processIncomingPacket(data, self._handle_response, slave=0)
+        return len(data)
+
+    def callback_disconnected(self, _reason: Exception) -> None:
+        """Handle lost connection"""
+        for tid in list(self.transaction):
+            self.raise_future(
+                self.transaction.getTransaction(tid),
+                ConnectionException("Connection lost during request"),
+            )
+
+    async def connect(self):
+        """Connect to the modbus remote host."""
+
+    def raise_future(self, my_future, exc):
+        """Set exception of a future if not done."""
+        if not my_future.done():
+            my_future.set_exception(exc)
+
+    def _handle_response(self, reply, **_kwargs):
+        """Handle the processed response and link to correct deferred."""
+        if reply is not None:
+            tid = reply.transaction_id
+            if handler := self.transaction.getTransaction(tid):
+                if not handler.done():
+                    handler.set_result(reply)
+            else:
+                Log.debug("Unrequested message: {}", reply, ":str")
+
+    def _build_response(self, tid):
+        """Return a deferred response for the current request."""
+        my_future = asyncio.Future()
+        if not self.transport:
+            self.raise_future(my_future, ConnectionException("Client is not connected"))
+        else:
+            self.transaction.addTransaction(my_future, tid)
+        return my_future
+
+    # ----------------------------------------------------------------------- #
+    # Internal methods
+    # ----------------------------------------------------------------------- #
+    def send(self, request):
+        """Send request.
+
+        :meta private:
+        """
+        if self.state != ModbusTransactionState.RETRYING:
+            Log.debug('New Transaction state "SENDING"')
+            self.state = ModbusTransactionState.SENDING
+        return request
+
+    def recv(self, size):
+        """Receive data.
+
+        :meta private:
+        """
+        return size
+
+    @classmethod
+    def _get_address_family(cls, address):
+        """Get the correct address family."""
+        try:
+            _ = socket.inet_pton(socket.AF_INET6, address)
+        except OSError:  # not a valid ipv6 address
+            return socket.AF_INET
+        return socket.AF_INET6
+
+    # ----------------------------------------------------------------------- #
+    # The magic methods
+    # ----------------------------------------------------------------------- #
+    def __enter__(self):
+        """Implement the client with enter block.
+
+        :returns: The current instance of the client
+        :raises ConnectionException:
+        """
+
+        if not self.connect():
+            raise ConnectionException(f"Failed to connect[{self.__str__()}]")
+        return self
+
+    async def __aenter__(self):
+        """Implement the client with enter block.
+
+        :returns: The current instance of the client
+        :raises ConnectionException:
+        """
+        if not await self.connect():
+            raise ConnectionException(f"Failed to connect[{self.__str__()}]")
+        return self
+
+    def __exit__(self, klass, value, traceback):
+        """Implement the client with exit block."""
+        self.close()
+
+    async def __aexit__(self, klass, value, traceback):
+        """Implement the client with exit block."""
+        self.close()
+
+    def __str__(self):
+        """Build a string representation of the connection.
+
+        :returns: The string representation
+        """
+        return (
+            f"{self.__class__.__name__} {self.comm_params.host}:{self.comm_params.port}"
+        )
@@ -0,0 +1,582 @@
+"""Modbus Client Common."""
+import struct
+from enum import Enum
+from typing import Any, List, Tuple, Union
+
+import pymodbus.bit_read_message as pdu_bit_read
+import pymodbus.bit_write_message as pdu_bit_write
+import pymodbus.diag_message as pdu_diag
+import pymodbus.file_message as pdu_file_msg
+import pymodbus.mei_message as pdu_mei
+import pymodbus.other_message as pdu_other_msg
+import pymodbus.register_read_message as pdu_reg_read
+import pymodbus.register_write_message as pdu_req_write
+from pymodbus.constants import INTERNAL_ERROR
+from pymodbus.exceptions import ModbusException
+from pymodbus.pdu import ModbusRequest, ModbusResponse
+
+
+class ModbusClientMixin:  # pylint: disable=too-many-public-methods
+    """**ModbusClientMixin**.
+
+    This is an interface class to facilitate the sending requests/receiving responses like read_coils.
+    execute() allows to make a call with non-standard or user defined function codes (remember to add a PDU
+    in the transport class to interpret the request/response).
+
+    Simple modbus message call::
+
+        response = client.read_coils(1, 10)
+        # or
+        response = await client.read_coils(1, 10)
+
+    Advanced modbus message call::
+
+        request = ReadCoilsRequest(1,10)
+        response = client.execute(request)
+        # or
+        request = ReadCoilsRequest(1,10)
+        response = await client.execute(request)
+
+    .. tip::
+        All methods can be used directly (synchronous) or
+        with await <method> (asynchronous) depending on the client used.
+    """
+
+    def __init__(self):
+        """Initialize."""
+
+    def execute(self, request: ModbusRequest) -> ModbusResponse:
+        """Execute request (code ???).
+
+        :param request: Request to send
+        :raises ModbusException:
+
+        Call with custom function codes.
+
+        .. tip::
+            Response is not interpreted.
+        """
+        raise ModbusException(INTERNAL_ERROR)
+
+    def read_coils(
+        self, address: int, count: int = 1, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Read coils (code 0x01).
+
+        :param address: Start address to read from
+        :param count: (optional) Number of coils to read
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_bit_read.ReadCoilsRequest(address, count, slave, **kwargs)
+        )
+
+    def read_discrete_inputs(
+        self, address: int, count: int = 1, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Read discrete inputs (code 0x02).
+
+        :param address: Start address to read from
+        :param count: (optional) Number of coils to read
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_bit_read.ReadDiscreteInputsRequest(address, count, slave, **kwargs)
+        )
+
+    def read_holding_registers(
+        self, address: int, count: int = 1, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Read holding registers (code 0x03).
+
+        :param address: Start address to read from
+        :param count: (optional) Number of coils to read
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_reg_read.ReadHoldingRegistersRequest(address, count, slave, **kwargs)
+        )
+
+    def read_input_registers(
+        self, address: int, count: int = 1, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Read input registers (code 0x04).
+
+        :param address: Start address to read from
+        :param count: (optional) Number of coils to read
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_reg_read.ReadInputRegistersRequest(address, count, slave, **kwargs)
+        )
+
+    def write_coil(
+        self, address: int, value: bool, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Write single coil (code 0x05).
+
+        :param address: Address to write to
+        :param value: Boolean to write
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_bit_write.WriteSingleCoilRequest(address, value, slave, **kwargs)
+        )
+
+    def write_register(
+        self, address: int, value: int, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Write register (code 0x06).
+
+        :param address: Address to write to
+        :param value: Value to write
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_req_write.WriteSingleRegisterRequest(address, value, slave, **kwargs)
+        )
+
+    def read_exception_status(self, slave: int = 0, **kwargs: Any) -> ModbusResponse:
+        """Read Exception Status (code 0x07).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_other_msg.ReadExceptionStatusRequest(slave, **kwargs))
+
+    def diag_query_data(
+        self, msg: bytearray, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose query data (code 0x08 sub 0x00).
+
+        :param msg: Message to be returned
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.ReturnQueryDataRequest(msg, slave=slave, **kwargs))
+
+    def diag_restart_communication(
+        self, toggle: bool, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose restart communication (code 0x08 sub 0x01).
+
+        :param toggle: True if toggled.
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.RestartCommunicationsOptionRequest(toggle, slave=slave, **kwargs)
+        )
+
+    def diag_read_diagnostic_register(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read diagnostic register (code 0x08 sub 0x02).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnDiagnosticRegisterRequest(slave=slave, **kwargs)
+        )
+
+    def diag_change_ascii_input_delimeter(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose change ASCII input delimiter (code 0x08 sub 0x03).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ChangeAsciiInputDelimiterRequest(slave=slave, **kwargs)
+        )
+
+    def diag_force_listen_only(self, slave: int = 0, **kwargs: Any) -> ModbusResponse:
+        """Diagnose force listen only (code 0x08 sub 0x04).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.ForceListenOnlyModeRequest(slave=slave, **kwargs))
+
+    def diag_clear_counters(self, slave: int = 0, **kwargs: Any) -> ModbusResponse:
+        """Diagnose clear counters (code 0x08 sub 0x0A).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.ClearCountersRequest(slave=slave, **kwargs))
+
+    def diag_read_bus_message_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read bus message count (code 0x08 sub 0x0B).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnBusMessageCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_read_bus_comm_error_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Bus Communication Error Count (code 0x08 sub 0x0C).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnBusCommunicationErrorCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_read_bus_exception_error_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Bus Exception Error Count (code 0x08 sub 0x0D).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnBusExceptionErrorCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_read_slave_message_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Slave Message Count (code 0x08 sub 0x0E).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnSlaveMessageCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_read_slave_no_response_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Slave No Response Count (code 0x08 sub 0x0F).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnSlaveNoResponseCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_read_slave_nak_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Slave NAK Count (code 0x08 sub 0x10).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.ReturnSlaveNAKCountRequest(slave=slave, **kwargs))
+
+    def diag_read_slave_busy_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Slave Busy Count (code 0x08 sub 0x11).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.ReturnSlaveBusyCountRequest(slave=slave, **kwargs))
+
+    def diag_read_bus_char_overrun_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Bus Character Overrun Count (code 0x08 sub 0x12).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnSlaveBusCharacterOverrunCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_read_iop_overrun_count(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose read Iop overrun count (code 0x08 sub 0x13).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_diag.ReturnIopOverrunCountRequest(slave=slave, **kwargs)
+        )
+
+    def diag_clear_overrun_counter(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose Clear Overrun Counter and Flag (code 0x08 sub 0x14).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.ClearOverrunCountRequest(slave=slave, **kwargs))
+
+    def diag_getclear_modbus_response(
+        self, slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Diagnose Get/Clear modbus plus (code 0x08 sub 0x15).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_diag.GetClearModbusPlusRequest(slave=slave, **kwargs))
+
+    def diag_get_comm_event_counter(self, **kwargs: Any) -> ModbusResponse:
+        """Diagnose get event counter (code 0x0B).
+
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_other_msg.GetCommEventCounterRequest(**kwargs))
+
+    def diag_get_comm_event_log(self, **kwargs: Any) -> ModbusResponse:
+        """Diagnose get event counter (code 0x0C).
+
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_other_msg.GetCommEventLogRequest(**kwargs))
+
+    def write_coils(
+        self,
+        address: int,
+        values: Union[List[bool], bool],
+        slave: int = 0,
+        **kwargs: Any,
+    ) -> ModbusResponse:
+        """Write coils (code 0x0F).
+
+        :param address: Start address to write to
+        :param values: List of booleans to write, or a single boolean to write
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_bit_write.WriteMultipleCoilsRequest(address, values, slave, **kwargs)
+        )
+
+    def write_registers(
+        self, address: int, values: Union[List[int], int], slave: int = 0, **kwargs: Any
+    ) -> ModbusResponse:
+        """Write registers (code 0x10).
+
+        :param address: Start address to write to
+        :param values: List of values to write, or a single value to write
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_req_write.WriteMultipleRegistersRequest(
+                address, values, slave, **kwargs
+            )
+        )
+
+    def report_slave_id(self, slave: int = 0, **kwargs: Any) -> ModbusResponse:
+        """Report slave ID (code 0x11).
+
+        :param slave: (optional) Modbus slave ID
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_other_msg.ReportSlaveIdRequest(slave, **kwargs))
+
+    def read_file_record(self, records: List[Tuple], **kwargs: Any) -> ModbusResponse:
+        """Read file record (code 0x14).
+
+        :param records: List of (Reference type, File number, Record Number, Record Length)
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_file_msg.ReadFileRecordRequest(records, **kwargs))
+
+    def write_file_record(self, records: List[Tuple], **kwargs: Any) -> ModbusResponse:
+        """Write file record (code 0x15).
+
+        :param records: List of (Reference type, File number, Record Number, Record Length)
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(pdu_file_msg.WriteFileRecordRequest(records, **kwargs))
+
+    def mask_write_register(
+        self,
+        address: int = 0x0000,
+        and_mask: int = 0xFFFF,
+        or_mask: int = 0x0000,
+        **kwargs: Any,
+    ) -> ModbusResponse:
+        """Mask write register (code 0x16).
+
+        :param address: The mask pointer address (0x0000 to 0xffff)
+        :param and_mask: The and bitmask to apply to the register address
+        :param or_mask: The or bitmask to apply to the register address
+        :param kwargs: (optional) Experimental parameters.
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_req_write.MaskWriteRegisterRequest(address, and_mask, or_mask, **kwargs)
+        )
+
+    def readwrite_registers(
+        self,
+        read_address: int = 0,
+        read_count: int = 0,
+        write_address: int = 0,
+        values: Union[List[int], int] = 0,
+        slave: int = 0,
+        **kwargs,
+    ) -> ModbusResponse:
+        """Read/Write registers (code 0x17).
+
+        :param read_address: The address to start reading from
+        :param read_count: The number of registers to read from address
+        :param write_address: The address to start writing to
+        :param values: List of values to write, or a single value to write
+        :param slave: (optional) Modbus slave ID
+        :param kwargs:
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_reg_read.ReadWriteMultipleRegistersRequest(
+                read_address=read_address,
+                read_count=read_count,
+                write_address=write_address,
+                write_registers=values,
+                slave=slave,
+                **kwargs,
+            )
+        )
+
+    def read_fifo_queue(self, address: int = 0x0000, **kwargs: Any) -> ModbusResponse:
+        """Read FIFO queue (code 0x18).
+
+        :param address: The address to start reading from
+        :param kwargs:
+        :raises ModbusException:
+        """
+        return self.execute(pdu_file_msg.ReadFifoQueueRequest(address, **kwargs))
+
+    # code 0x2B sub 0x0D: CANopen General Reference Request and Response, NOT IMPLEMENTED
+
+    def read_device_information(
+        self, read_code: int = None, object_id: int = 0x00, **kwargs: Any
+    ) -> ModbusResponse:
+        """Read FIFO queue (code 0x2B sub 0x0E).
+
+        :param read_code: The device information read code
+        :param object_id: The object to read from
+        :param kwargs:
+        :raises ModbusException:
+        """
+        return self.execute(
+            pdu_mei.ReadDeviceInformationRequest(read_code, object_id, **kwargs)
+        )
+
+    # ------------------
+    # Converter methods
+    # ------------------
+
+    class DATATYPE(Enum):
+        """Datatype enum (name and number of bytes), used for convert_* calls."""
+
+        INT16 = ("h", 1)
+        UINT16 = ("H", 1)
+        INT32 = ("i", 2)
+        UINT32 = ("I", 2)
+        INT64 = ("q", 4)
+        UINT64 = ("Q", 4)
+        FLOAT32 = ("f", 2)
+        FLOAT64 = ("d", 4)
+        STRING = ("s", 0)
+
+    @classmethod
+    def convert_from_registers(
+        cls, registers: List[int], data_type: DATATYPE
+    ) -> Union[int, float, str]:
+        """Convert registers to int/float/str.
+
+        :param registers: list of registers received from e.g. read_holding_registers()
+        :param data_type: data type to convert to
+        :returns: int, float or str depending on "data_type"
+        :raises ModbusException: when size of registers is not 1, 2 or 4
+        """
+        byte_list = bytearray()
+        for x in registers:
+            byte_list.extend(int.to_bytes(x, 2, "big"))
+        if data_type == cls.DATATYPE.STRING:
+            if byte_list[-1:] == b"\00":
+                byte_list = byte_list[:-1]
+            return byte_list.decode("utf-8")
+        if len(registers) != data_type.value[1]:
+            raise ModbusException(
+                f"Illegal size ({len(registers)}) of register array, cannot convert!"
+            )
+        return struct.unpack(f">{data_type.value[0]}", byte_list)[0]
+
+    @classmethod
+    def convert_to_registers(
+        cls, value: Union[int, float, str], data_type: DATATYPE
+    ) -> List[int]:
+        """Convert int/float/str to registers (16/32/64 bit).
+
+        :param value: value to be converted
+        :param data_type: data type to be encoded as registers
+        :returns: List of registers, can be used directly in e.g. write_registers()
+        :raises TypeError: when there is a mismatch between data_type and value
+        """
+        if data_type == cls.DATATYPE.STRING:
+            if not isinstance(value, str):
+                raise TypeError(f"Value should be string but is {type(value)}.")
+            byte_list = value.encode()
+            if len(byte_list) % 2:
+                byte_list += b"\x00"
+        else:
+            byte_list = struct.pack(f">{data_type.value[0]}", value)
+        regs = [
+            int.from_bytes(byte_list[x : x + 2], "big")
+            for x in range(0, len(byte_list), 2)
+        ]
+        return regs
@@ -0,0 +1,291 @@
+"""Modbus client async serial communication."""
+import asyncio
+import time
+from contextlib import suppress
+from functools import partial
+from typing import Any, Type
+
+from pymodbus.client.base import ModbusBaseClient
+from pymodbus.exceptions import ConnectionException
+from pymodbus.framer import ModbusFramer
+from pymodbus.framer.rtu_framer import ModbusRtuFramer
+from pymodbus.logging import Log
+from pymodbus.transport import CommType
+from pymodbus.utilities import ModbusTransactionState
+
+
+with suppress(ImportError):
+    import serial
+
+
+class AsyncModbusSerialClient(ModbusBaseClient, asyncio.Protocol):
+    """**AsyncModbusSerialClient**.
+
+    :param port: Serial port used for communication.
+    :param framer: (optional) Framer class.
+    :param baudrate: (optional) Bits per second.
+    :param bytesize: (optional) Number of bits per byte 7-8.
+    :param parity: (optional) 'E'ven, 'O'dd or 'N'one
+    :param stopbits: (optional) Number of stop bits 0-2¡.
+    :param handle_local_echo: (optional) Discard local echo from dongle.
+    :param kwargs: (optional) Experimental parameters
+
+    The serial communication is RS-485 based, and usually used with a usb RS485 dongle.
+
+    Example::
+
+        from pymodbus.client import AsyncModbusSerialClient
+
+        async def run():
+            client = AsyncModbusSerialClient("dev/serial0")
+
+            await client.connect()
+            ...
+            client.close()
+    """
+
+    def __init__(
+        self,
+        port: str,
+        framer: Type[ModbusFramer] = ModbusRtuFramer,
+        baudrate: int = 19200,
+        bytesize: int = 8,
+        parity: str = "N",
+        stopbits: int = 1,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize Asyncio Modbus Serial Client."""
+        asyncio.Protocol.__init__(self)
+        ModbusBaseClient.__init__(
+            self,
+            framer=framer,
+            CommType=CommType.SERIAL,
+            host=port,
+            baudrate=baudrate,
+            bytesize=bytesize,
+            parity=parity,
+            stopbits=stopbits,
+            **kwargs,
+        )
+
+    @property
+    def connected(self):
+        """Connect internal."""
+        return self.is_active()
+
+    async def connect(self) -> bool:
+        """Connect Async client."""
+        self.reset_delay()
+        Log.debug("Connecting to {}.", self.comm_params.host)
+        return await self.transport_connect()
+
+
+class ModbusSerialClient(ModbusBaseClient):
+    """**ModbusSerialClient**.
+
+    :param port: Serial port used for communication.
+    :param framer: (optional) Framer class.
+    :param baudrate: (optional) Bits per second.
+    :param bytesize: (optional) Number of bits per byte 7-8.
+    :param parity: (optional) 'E'ven, 'O'dd or 'N'one
+    :param stopbits: (optional) Number of stop bits 0-2¡.
+    :param handle_local_echo: (optional) Discard local echo from dongle.
+    :param kwargs: (optional) Experimental parameters
+
+    The serial communication is RS-485 based, and usually used with a usb RS485 dongle.
+
+    Example::
+
+        from pymodbus.client import ModbusSerialClient
+
+        def run():
+            client = ModbusSerialClient("dev/serial0")
+
+            client.connect()
+            ...
+            client.close()
+
+
+    Remark: There are no automatic reconnect as with AsyncModbusSerialClient
+    """
+
+    state = ModbusTransactionState.IDLE
+    inter_char_timeout: float = 0
+    silent_interval: float = 0
+
+    def __init__(
+        self,
+        port: str,
+        framer: Type[ModbusFramer] = ModbusRtuFramer,
+        baudrate: int = 19200,
+        bytesize: int = 8,
+        parity: str = "N",
+        stopbits: int = 1,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize Modbus Serial Client."""
+        self.transport = None
+        kwargs["use_sync"] = True
+        ModbusBaseClient.__init__(
+            self,
+            framer=framer,
+            CommType=CommType.SERIAL,
+            host=port,
+            baudrate=baudrate,
+            bytesize=bytesize,
+            parity=parity,
+            stopbits=stopbits,
+            **kwargs,
+        )
+        self.socket = None
+
+        self.last_frame_end = None
+
+        self._t0 = float(1 + 8 + 2) / self.comm_params.baudrate
+
+        """
+        The minimum delay is 0.01s and the maximum can be set to 0.05s.
+        Setting too large a setting affects efficiency.
+        """
+        self._recv_interval = (
+            (round((100 * self._t0), 2) + 0.01)
+            if (round((100 * self._t0), 2) + 0.01) < 0.05
+            else 0.05
+        )
+
+        if self.comm_params.baudrate > 19200:
+            self.silent_interval = 1.75 / 1000  # ms
+        else:
+            self.inter_char_timeout = 1.5 * self._t0
+            self.silent_interval = 3.5 * self._t0
+        self.silent_interval = round(self.silent_interval, 6)
+
+    @property
+    def connected(self):
+        """Connect internal."""
+        return self.connect()
+
+    def connect(self):  # pylint: disable=invalid-overridden-method
+        """Connect to the modbus serial server."""
+        if self.socket:
+            return True
+        try:
+            self.socket = serial.serial_for_url(
+                self.comm_params.host,
+                timeout=self.comm_params.timeout_connect,
+                bytesize=self.comm_params.bytesize,
+                stopbits=self.comm_params.stopbits,
+                baudrate=self.comm_params.baudrate,
+                parity=self.comm_params.parity,
+            )
+            if isinstance(self.framer, ModbusRtuFramer):
+                if self.params.strict:
+                    self.socket.interCharTimeout = self.inter_char_timeout
+                self.last_frame_end = None
+        except serial.SerialException as msg:
+            Log.error("{}", msg)
+            self.close()
+        return self.socket is not None
+
+    def close(self):  # pylint: disable=arguments-differ
+        """Close the underlying socket connection."""
+        if self.socket:
+            self.socket.close()
+        self.socket = None
+
+    def _in_waiting(self):
+        """Return _in_waiting."""
+        in_waiting = "in_waiting" if hasattr(self.socket, "in_waiting") else "inWaiting"
+
+        if in_waiting == "in_waiting":
+            waitingbytes = getattr(self.socket, in_waiting)
+        else:
+            waitingbytes = getattr(self.socket, in_waiting)()
+        return waitingbytes
+
+    def send(self, request):
+        """Send data on the underlying socket.
+
+        If receive buffer still holds some data then flush it.
+
+        Sleep if last send finished less than 3.5 character times ago.
+        """
+        super().send(request)
+        if not self.socket:
+            raise ConnectionException(str(self))
+        if request:
+            try:
+                if waitingbytes := self._in_waiting():
+                    result = self.socket.read(waitingbytes)
+                    if self.state == ModbusTransactionState.RETRYING:
+                        Log.debug(
+                            "Sending available data in recv buffer {}", result, ":hex"
+                        )
+                        return result
+                    Log.warning("Cleanup recv buffer before send: {}", result, ":hex")
+            except NotImplementedError:
+                pass
+            if self.state != ModbusTransactionState.SENDING:
+                Log.debug('New Transaction state "SENDING"')
+                self.state = ModbusTransactionState.SENDING
+            size = self.socket.write(request)
+            return size
+        return 0
+
+    def _wait_for_data(self):
+        """Wait for data."""
+        size = 0
+        more_data = False
+        if (
+            self.comm_params.timeout_connect is not None
+            and self.comm_params.timeout_connect
+        ):
+            condition = partial(
+                lambda start, timeout: (time.time() - start) <= timeout,
+                timeout=self.comm_params.timeout_connect,
+            )
+        else:
+            condition = partial(lambda dummy1, dummy2: True, dummy2=None)
+        start = time.time()
+        while condition(start):
+            available = self._in_waiting()
+            if (more_data and not available) or (more_data and available == size):
+                break
+            if available and available != size:
+                more_data = True
+                size = available
+            time.sleep(self._recv_interval)
+        return size
+
+    def recv(self, size):
+        """Read data from the underlying descriptor."""
+        super().recv(size)
+        if not self.socket:
+            raise ConnectionException(
+                self.__str__()  # pylint: disable=unnecessary-dunder-call
+            )
+        if size is None:
+            size = self._wait_for_data()
+        if size > self._in_waiting():
+            self._wait_for_data()
+        result = self.socket.read(size)
+        return result
+
+    def is_socket_open(self):
+        """Check if socket is open."""
+        if self.socket:
+            if hasattr(self.socket, "is_open"):
+                return self.socket.is_open
+            return self.socket.isOpen()
+        return False
+
+    def __str__(self):
+        """Build a string representation of the connection."""
+        return f"ModbusSerialClient({self.framer} baud[{self.comm_params.baudrate}])"
+
+    def __repr__(self):
+        """Return string representation."""
+        return (
+            f"<{self.__class__.__name__} at {hex(id(self))} socket={self.socket}, "
+            f"framer={self.framer}, timeout={self.comm_params.timeout_connect}>"
+        )
@@ -0,0 +1,275 @@
+"""Modbus client async TCP communication."""
+import asyncio
+import select
+import socket
+import time
+from typing import Any, Tuple, Type
+
+from pymodbus.client.base import ModbusBaseClient
+from pymodbus.exceptions import ConnectionException
+from pymodbus.framer import ModbusFramer
+from pymodbus.framer.socket_framer import ModbusSocketFramer
+from pymodbus.logging import Log
+from pymodbus.transport import CommType
+from pymodbus.utilities import ModbusTransactionState
+
+
+class AsyncModbusTcpClient(ModbusBaseClient, asyncio.Protocol):
+    """**AsyncModbusTcpClient**.
+
+    :param host: Host IP address or host name
+    :param port: (optional) Port used for communication
+    :param framer: (optional) Framer class
+    :param source_address: (optional) source address of client
+    :param kwargs: (optional) Experimental parameters
+
+    Example::
+
+        from pymodbus.client import AsyncModbusTcpClient
+
+        async def run():
+            client = AsyncModbusTcpClient("localhost")
+
+            await client.connect()
+            ...
+            client.close()
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = 502,
+        framer: Type[ModbusFramer] = ModbusSocketFramer,
+        source_address: Tuple[str, int] = None,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize Asyncio Modbus TCP Client."""
+        asyncio.Protocol.__init__(self)
+        if "CommType" not in kwargs:
+            kwargs["CommType"] = CommType.TCP
+        if source_address:
+            kwargs["source_address"] = source_address
+        ModbusBaseClient.__init__(
+            self,
+            framer=framer,
+            host=host,
+            port=port,
+            **kwargs,
+        )
+        self.params.source_address = source_address
+
+    async def connect(self) -> bool:
+        """Initiate connection to start client."""
+        self.reset_delay()
+        Log.debug(
+            "Connecting to {}:{}.",
+            self.comm_params.host,
+            self.comm_params.port,
+        )
+        return await self.transport_connect()
+
+    @property
+    def connected(self):
+        """Return true if connected."""
+        return self.is_active()
+
+
+class ModbusTcpClient(ModbusBaseClient):
+    """**ModbusTcpClient**.
+
+    :param host: Host IP address or host name
+    :param port: (optional) Port used for communication
+    :param framer: (optional) Framer class
+    :param source_address: (optional) source address of client
+    :param kwargs: (optional) Experimental parameters
+
+    Example::
+
+        from pymodbus.client import ModbusTcpClient
+
+        async def run():
+            client = ModbusTcpClient("localhost")
+
+            client.connect()
+            ...
+            client.close()
+
+    Remark: There are no automatic reconnect as with AsyncModbusTcpClient
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = 502,
+        framer: Type[ModbusFramer] = ModbusSocketFramer,
+        source_address: Tuple[str, int] = None,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize Modbus TCP Client."""
+        if "CommType" not in kwargs:
+            kwargs["CommType"] = CommType.TCP
+        kwargs["use_sync"] = True
+        self.transport = None
+        super().__init__(framer=framer, host=host, port=port, **kwargs)
+        self.params.source_address = source_address
+        self.socket = None
+
+    @property
+    def connected(self):
+        """Connect internal."""
+        return self.socket is not None
+
+    def connect(self):  # pylint: disable=invalid-overridden-method
+        """Connect to the modbus tcp server."""
+        if self.socket:
+            return True
+        try:
+            self.socket = socket.create_connection(
+                (self.comm_params.host, self.comm_params.port),
+                timeout=self.comm_params.timeout_connect,
+                source_address=self.params.source_address,
+            )
+            Log.debug(
+                "Connection to Modbus server established. Socket {}",
+                self.socket.getsockname(),
+            )
+        except OSError as msg:
+            Log.error(
+                "Connection to ({}, {}) failed: {}",
+                self.comm_params.host,
+                self.comm_params.port,
+                msg,
+            )
+            self.close()
+        return self.socket is not None
+
+    def close(self):  # pylint: disable=arguments-differ
+        """Close the underlying socket connection."""
+        if self.socket:
+            self.socket.close()
+        self.socket = None
+
+    def _check_read_buffer(self):
+        """Check read buffer."""
+        time_ = time.time()
+        end = time_ + self.comm_params.timeout_connect
+        data = None
+        ready = select.select([self.socket], [], [], end - time_)
+        if ready[0]:
+            data = self.socket.recv(1024)
+        return data
+
+    def send(self, request):
+        """Send data on the underlying socket."""
+        super().send(request)
+        if not self.socket:
+            raise ConnectionException(str(self))
+        if self.state == ModbusTransactionState.RETRYING:
+            if data := self._check_read_buffer():
+                return data
+
+        if request:
+            return self.socket.send(request)
+        return 0
+
+    def recv(self, size):
+        """Read data from the underlying descriptor."""
+        super().recv(size)
+        if not self.socket:
+            raise ConnectionException(str(self))
+
+        # socket.recv(size) waits until it gets some data from the host but
+        # not necessarily the entire response that can be fragmented in
+        # many packets.
+        # To avoid split responses to be recognized as invalid
+        # messages and to be discarded, loops socket.recv until full data
+        # is received or timeout is expired.
+        # If timeout expires returns the read data, also if its length is
+        # less than the expected size.
+        self.socket.setblocking(0)
+
+        timeout = self.comm_params.timeout_connect
+
+        # If size isn't specified read up to 4096 bytes at a time.
+        if size is None:
+            recv_size = 4096
+        else:
+            recv_size = size
+
+        data = []
+        data_length = 0
+        time_ = time.time()
+        end = time_ + timeout
+        while recv_size > 0:
+            try:
+                ready = select.select([self.socket], [], [], end - time_)
+            except ValueError:
+                return self._handle_abrupt_socket_close(size, data, time.time() - time_)
+            if ready[0]:
+                if (recv_data := self.socket.recv(recv_size)) == b"":
+                    return self._handle_abrupt_socket_close(
+                        size, data, time.time() - time_
+                    )
+                data.append(recv_data)
+                data_length += len(recv_data)
+            time_ = time.time()
+
+            # If size isn't specified continue to read until timeout expires.
+            if size:
+                recv_size = size - data_length
+
+            # Timeout is reduced also if some data has been received in order
+            # to avoid infinite loops when there isn't an expected response
+            # size and the slave sends noisy data continuously.
+            if time_ > end:
+                break
+
+        return b"".join(data)
+
+    def _handle_abrupt_socket_close(self, size, data, duration):
+        """Handle unexpected socket close by remote end.
+
+        Intended to be invoked after determining that the remote end
+        has unexpectedly closed the connection, to clean up and handle
+        the situation appropriately.
+
+        :param size: The number of bytes that was attempted to read
+        :param data: The actual data returned
+        :param duration: Duration from the read was first attempted
+               until it was determined that the remote closed the
+               socket
+        :return: The more than zero bytes read from the remote end
+        :raises ConnectionException: If the remote end didn't send any
+                 data at all before closing the connection.
+        """
+        self.close()
+        size_txt = size if size else "unbounded read"
+        readsize = f"read of {size_txt} bytes"
+        msg = (
+            f"{self}: Connection unexpectedly closed "
+            f"{duration} seconds into {readsize}"
+        )
+        if data:
+            result = b"".join(data)
+            Log.warning(" after returning {} bytes: {} ", len(result), result)
+            return result
+        msg += " without response from slave before it closed connection"
+        raise ConnectionException(msg)
+
+    def is_socket_open(self):
+        """Check if socket is open."""
+        return self.socket is not None
+
+    def __str__(self):
+        """Build a string representation of the connection.
+
+        :returns: The string representation
+        """
+        return f"ModbusTcpClient({self.comm_params.host}:{self.comm_params.port})"
+
+    def __repr__(self):
+        """Return string representation."""
+        return (
+            f"<{self.__class__.__name__} at {hex(id(self))} socket={self.socket}, "
+            f"ipaddr={self.comm_params.host}, port={self.comm_params.port}, timeout={self.comm_params.timeout_connect}>"
+        )
@@ -0,0 +1,171 @@
+"""Modbus client async TLS communication."""
+import socket
+import ssl
+from typing import Any, Type
+
+from pymodbus.client.tcp import AsyncModbusTcpClient, ModbusTcpClient
+from pymodbus.framer import ModbusFramer
+from pymodbus.framer.tls_framer import ModbusTlsFramer
+from pymodbus.logging import Log
+from pymodbus.transport import CommParams, CommType
+
+
+class AsyncModbusTlsClient(AsyncModbusTcpClient):
+    """**AsyncModbusTlsClient**.
+
+    :param host: Host IP address or host name
+    :param port: (optional) Port used for communication
+    :param framer: (optional) Framer class
+    :param source_address: (optional) Source address of client
+    :param sslctx: (optional) SSLContext to use for TLS
+    :param certfile: (optional) Cert file path for TLS server request
+    :param keyfile: (optional) Key file path for TLS server request
+    :param password: (optional) Password for for decrypting private key file
+    :param server_hostname: (optional) Bind certificate to host
+    :param kwargs: (optional) Experimental parameters
+
+    ..tip::
+        See ModbusBaseClient for common parameters.
+
+    Example::
+
+        from pymodbus.client import AsyncModbusTlsClient
+
+        async def run():
+            client = AsyncModbusTlsClient("localhost")
+
+            await client.connect()
+            ...
+            client.close()
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = 802,
+        framer: Type[ModbusFramer] = ModbusTlsFramer,
+        sslctx: ssl.SSLContext = None,
+        certfile: str = None,
+        keyfile: str = None,
+        password: str = None,
+        server_hostname: str = None,
+        **kwargs: Any,
+    ):
+        """Initialize Asyncio Modbus TLS Client."""
+        AsyncModbusTcpClient.__init__(
+            self,
+            host,
+            port=port,
+            framer=framer,
+            CommType=CommType.TLS,
+            sslctx=CommParams.generate_ssl(
+                False, certfile, keyfile, password, sslctx=sslctx
+            ),
+            **kwargs,
+        )
+        self.params.server_hostname = server_hostname
+
+    async def connect(self) -> bool:
+        """Initiate connection to start client."""
+        self.reset_delay()
+        Log.debug(
+            "Connecting to {}:{}.",
+            self.comm_params.host,
+            self.comm_params.port,
+        )
+        return await self.transport_connect()
+
+
+class ModbusTlsClient(ModbusTcpClient):
+    """**ModbusTlsClient**.
+
+    :param host: Host IP address or host name
+    :param port: (optional) Port used for communication
+    :param framer: (optional) Framer class
+    :param source_address: (optional) Source address of client
+    :param sslctx: (optional) SSLContext to use for TLS
+    :param certfile: (optional) Cert file path for TLS server request
+    :param keyfile: (optional) Key file path for TLS server request
+    :param password: (optional) Password for decrypting private key file
+    :param server_hostname: (optional) Bind certificate to host
+    :param kwargs: (optional) Experimental parameters
+
+    ..tip::
+        See ModbusBaseClient for common parameters.
+
+    Example::
+
+        from pymodbus.client import ModbusTlsClient
+
+        async def run():
+            client = ModbusTlsClient("localhost")
+
+            client.connect()
+            ...
+            client.close()
+
+
+    Remark: There are no automatic reconnect as with AsyncModbusTlsClient
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = 802,
+        framer: Type[ModbusFramer] = ModbusTlsFramer,
+        sslctx: ssl.SSLContext = None,
+        certfile: str = None,
+        keyfile: str = None,
+        password: str = None,
+        server_hostname: str = None,
+        **kwargs: Any,
+    ):
+        """Initialize Modbus TLS Client."""
+        self.transport = None
+        super().__init__(
+            host, CommType=CommType.TLS, port=port, framer=framer, **kwargs
+        )
+        self.sslctx = CommParams.generate_ssl(
+            False, certfile, keyfile, password, sslctx=sslctx
+        )
+        self.params.server_hostname = server_hostname
+
+    @property
+    def connected(self):
+        """Connect internal."""
+        return self.transport is not None
+
+    def connect(self):
+        """Connect to the modbus tls server."""
+        if self.socket:
+            return True
+        try:
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            if self.params.source_address:
+                sock.bind(self.params.source_address)
+            self.socket = self.sslctx.wrap_socket(
+                sock, server_side=False, server_hostname=self.comm_params.host
+            )
+            self.socket.settimeout(self.comm_params.timeout_connect)
+            self.socket.connect((self.comm_params.host, self.comm_params.port))
+        except OSError as msg:
+            Log.error(
+                "Connection to ({}, {}) failed: {}",
+                self.comm_params.host,
+                self.comm_params.port,
+                msg,
+            )
+            self.close()
+        return self.socket is not None
+
+    def __str__(self):
+        """Build a string representation of the connection."""
+        return f"ModbusTlsClient({self.comm_params.host}:{self.comm_params.port})"
+
+    def __repr__(self):
+        """Return string representation."""
+        return (
+            f"<{self.__class__.__name__} at {hex(id(self))} socket={self.socket}, "
+            f"ipaddr={self.comm_params.host}, port={self.comm_params.port}, sslctx={self.sslctx}, "
+            f"timeout={self.comm_params.timeout_connect}>"
+        )
@@ -0,0 +1,190 @@
+"""Modbus client async UDP communication."""
+import asyncio
+import socket
+from typing import Any, Tuple, Type
+
+from pymodbus.client.base import ModbusBaseClient
+from pymodbus.exceptions import ConnectionException
+from pymodbus.framer import ModbusFramer
+from pymodbus.framer.socket_framer import ModbusSocketFramer
+from pymodbus.logging import Log
+from pymodbus.transport import CommType
+
+
+DGRAM_TYPE = socket.SOCK_DGRAM
+
+
+class AsyncModbusUdpClient(
+    ModbusBaseClient, asyncio.Protocol, asyncio.DatagramProtocol
+):
+    """**AsyncModbusUdpClient**.
+
+    :param host: Host IP address or host name
+    :param port: (optional) Port used for communication.
+    :param framer: (optional) Framer class.
+    :param source_address: (optional) source address of client,
+    :param kwargs: (optional) Experimental parameters
+
+    ..tip::
+        See ModbusBaseClient for common parameters.
+
+    Example::
+
+        from pymodbus.client import AsyncModbusUdpClient
+
+        async def run():
+            client = AsyncModbusUdpClient("localhost")
+
+            await client.connect()
+            ...
+            client.close()
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = 502,
+        framer: Type[ModbusFramer] = ModbusSocketFramer,
+        source_address: Tuple[str, int] = None,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize Asyncio Modbus UDP Client."""
+        asyncio.DatagramProtocol.__init__(self)
+        asyncio.Protocol.__init__(self)
+        ModbusBaseClient.__init__(
+            self, framer=framer, CommType=CommType.UDP, host=host, port=port, **kwargs
+        )
+        self.params.source_address = source_address
+
+    @property
+    def connected(self):
+        """Return true if connected."""
+        return self.is_active()
+
+    async def connect(self) -> bool:
+        """Start reconnecting asynchronous udp client.
+
+        :meta private:
+        """
+        self.reset_delay()
+        Log.debug(
+            "Connecting to {}:{}.",
+            self.comm_params.host,
+            self.comm_params.port,
+        )
+        return await self.transport_connect()
+
+
+class ModbusUdpClient(ModbusBaseClient):
+    """**ModbusUdpClient**.
+
+    :param host: Host IP address or host name
+    :param port: (optional) Port used for communication.
+    :param framer: (optional) Framer class.
+    :param source_address: (optional) source address of client,
+    :param kwargs: (optional) Experimental parameters
+
+    ..tip::
+        See ModbusBaseClient for common parameters.
+
+    Example::
+
+        from pymodbus.client import ModbusUdpClient
+
+        async def run():
+            client = ModbusUdpClient("localhost")
+
+            client.connect()
+            ...
+            client.close()
+
+    Remark: There are no automatic reconnect as with AsyncModbusUdpClient
+    """
+
+    def __init__(
+        self,
+        host: str,
+        port: int = 502,
+        framer: Type[ModbusFramer] = ModbusSocketFramer,
+        source_address: Tuple[str, int] = None,
+        **kwargs: Any,
+    ) -> None:
+        """Initialize Modbus UDP Client."""
+        kwargs["use_sync"] = True
+        self.transport = None
+        super().__init__(
+            framer=framer, port=port, host=host, CommType=CommType.UDP, **kwargs
+        )
+        self.params.source_address = source_address
+
+        self.socket = None
+
+    @property
+    def connected(self):
+        """Connect internal."""
+        return self.socket is not None
+
+    def connect(self):  # pylint: disable=invalid-overridden-method
+        """Connect to the modbus tcp server.
+
+        :meta private:
+        """
+        if self.socket:
+            return True
+        try:
+            family = ModbusUdpClient._get_address_family(self.comm_params.host)
+            self.socket = socket.socket(family, socket.SOCK_DGRAM)
+            self.socket.settimeout(self.comm_params.timeout_connect)
+        except OSError as exc:
+            Log.error("Unable to create udp socket {}", exc)
+            self.close()
+        return self.socket is not None
+
+    def close(self):  # pylint: disable=arguments-differ
+        """Close the underlying socket connection.
+
+        :meta private:
+        """
+        self.socket = None
+
+    def send(self, request):
+        """Send data on the underlying socket.
+
+        :meta private:
+        """
+        super().send(request)
+        if not self.socket:
+            raise ConnectionException(str(self))
+        if request:
+            return self.socket.sendto(
+                request, (self.comm_params.host, self.comm_params.port)
+            )
+        return 0
+
+    def recv(self, size):
+        """Read data from the underlying descriptor.
+
+        :meta private:
+        """
+        super().recv(size)
+        if not self.socket:
+            raise ConnectionException(str(self))
+        return self.socket.recvfrom(size)[0]
+
+    def is_socket_open(self):
+        """Check if socket is open.
+
+        :meta private:
+        """
+        return True
+
+    def __str__(self):
+        """Build a string representation of the connection."""
+        return f"ModbusUdpClient({self.comm_params.host}:{self.comm_params.port})"
+
+    def __repr__(self):
+        """Return string representation."""
+        return (
+            f"<{self.__class__.__name__} at {hex(id(self))} socket={self.socket}, "
+            f"ipaddr={self.comm_params.host}, port={self.comm_params.port}, timeout={self.comm_params.timeout_connect}>"
+        )