Modbus Datatypes & Function Codes

Data Types Cases:

Datatypes case no	Datatype (RTU/ASCII)	Datatype (TCP/IP)
0	Float ABCD
1	Float DCBA
2	Float BADC
3	Float CDAB	Float CDAB
4	UINT ABCD
5	UNIT DCBA
6	UINT BADC
7	UINT CDAB	UINT CDAB
8	INT ABCD
9	INT DCBA
10	INT BADC
11	INT CDAB	INT CDAB
12	INT AB	INT AB
13	INT BA
14	UINT AB	UINT AB
15	UINT BA
16	UINT ABCDEFGH
17	INT ABCDEFGH

Function Code cases

Function Code	Description
1	Coil Status
2	Input Status
3	Holding Register
4	Input Register