A Broadcaster that is a Server accepts a data input from the Schema and makes it available for others. It does not actually broadcast the data, it merely makes it available for others to read. From the perspective of a Schema the data is located "here" in this module.
A Broadcaster that is a Client periodically sends a value to a Server, via a Poll, where the Server then stores it and makes it available to others. From the perspective of the Schema, the data is stored "elsewhere" in another module, typically in another node. The Modbus/TCP broadcast allows Clients and Servers to send information to connected Receivers.
When a broadcaster is connected to a Modbus/TCP unit in the same module it is able the write to the Input Register and Discrete Input spaces, otherwise these spaces are read-only to Modbus/TCP broadcasters. The Coil and Holding Register spaces are always available to all Modbus/TCP broadcast operators.
Important Note: Define the broadcasters before the receivers to make receiver definition easier.
