Pymodbus is a full Modbus protocol implementation offering a client and server with synchronous/asynchronous API and simulators. Our releases follow the pattern X.Y.Z.

Pymodbus asynchronous Server with updating task Example. An example of an asynchronous server and a task that runs continuously alongside the server and updates values.

Pymodbus offers both a synchronous client and a asynchronous client. Both clients offer simple calls for each type of request, as well as a unified response, removing a lot of the complexities …

Pymodbus asynchronous Server with updating task Example. An example of an asynchronous server and a task that runs continuously alongside the server and updates values.

Server (3.x) Pymodbus offers servers with transport protocols for Serial (RS-485) typically using a dongle TCP TLS UDP possibility to add a custom transport protocol communication in 2 …

pymodbus.pymodbus_apply_logging_config(level: str | int = 10, log_file_name: str | None = None) Apply basic logging configuration used by default by Pymodbus maintainers.

Pymodbus offers both a synchronous client and a asynchronous client. Both clients offer simple calls for each type of request, as well as a unified response, removing a lot of the complexities …

Pymodbus 4.0 contains a number of incompatibilities with Pymodbus 3.x, however most of these are simple edits. This will be amended, whenever there API changes are merged

pymodbus.pymodbus_apply_logging_config(level: str | int = 10, log_file_name: str | None = None) Apply basic logging configuration used by default by Pymodbus maintainers.

Configuring the pymodbus simulator is done with a json file, or if only using the datastore simulator a python dict (same structure as the device part of the json file).