Modbus data types

Modbus data types

Modbus Type	Server Data Type	Size	Access Rights
discrete input	bool	fixed	Read-Only
coil	bool	fixed	Read-Write
input register	uint16	fixed	Read-Only
input register	int16	fixed	Read-Only

Modbus data types

Modbus Type	Server Data Type	Size	Access Rights
input register	uint32	fixed	Read-Only
input register	int32	fixed	Read-Only
input register	float	fixed	Read-Only
input register	double	fixed	Read-Only
input register	bool	fixed	Read-Only
input register	time	fixed	Read-Only
input register	string	1 – 246	Read-Only
input register	wstring	1 – 123	Read-Only
holding register	uint16	fixed	Read-Write
holding register	int16	fixed	Read-Write
holding register	uint32	fixed	Read-Write
holding register	int32	fixed	Read-Write
holding register	float	fixed	Read-Write
holding register	double	fixed	Read-Write
holding register	bool	fixed	Read-Write
holding register	time	fixed	Read-Write
holding register	string	1 – 246	Read-Write
holding register	wstring	1 – 123	Read-Write