Which layer specifies the rules for Modbus Application ProtocolAvailable Choices (select all choices that are...

The Modbus Application Protocol is a messaging protocol that provides client/server communication between devices connected on different types of buses or networks. It is positioned at level 7 of the OSI model, which is the application layer. The application layer is the highest level of the OSI model and defines the rules and formats for data exchange between applications. The Modbus Application Protocol is independent of the underlying communication layers and can be implemented using different transport protocols, such as TCP/IP, serial, or Modbus Plus. The Modbus Application Protocol defines the function codes, data formats, and error codes for Modbus transactions123 References:

MODBUS APPLICATION PROTOCOL SPECIFICATION V1

Modbus - Wikipedia

Overview of Modbus — EPICS support for Modbus - GitHub Pages