Supported Modbus data types

Newer Beetle models support registers with a size up to 64 bits.

Label	Description	Size
Coil	Binary output	1 bit
Discrete input	Binary input	1 bit
Holding register	Analog output	1 register = 2 bytes = 16 bits 2 registers = 4 bytes = 32 bits 4 registers = 8 bytes = 64 bits
Input register	Analog input	1 register = 2 bytes = 16 bits 2 registers = 4 bytes = 32 bits 4 registers = 8 bytes = 64 bits

Legacy data types

Some older Beetle models only support 16 and 32 bit registers:

Label	Description	Size
Coil	Binary output	1 bit
Discrete input	Binary input	1 bit
Holding register	Analog output	1 register = 2 bytes = 16 bits
Input register	Analog input	1 register = 2 bytes = 16 bits
Large holding register	Analog output	2 registers = 4 bytes = 32 bits
Large input register	Analog input	2 registers = 4 bytes = 32 bits