Interoperability Structure of Smart Water Conservancy Based on Internet of Things

Table 3

Message structure.

Message structure	Type	Meaning
Fixed header	UInt16	Communication serial number
	DateTime	Timestamp
	Guid	Requester ID
	Guid	Responder ID
	UInt32	Total length of the message content
Function code	1Byte	Function type code
	1Byte	Subfunction code
Parameter (code)	variable length	Parameter (code)