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Modbus

Supported datatypes

C (Coil)I (Input)IR (Input register)HR (Holding register)
Bitxxxx
Short (1 reg)xx
Int (2 reg)xx
Long (4 reg)xx
Float (2 reg)xx
Double (4 reg)xx
String (variable length)xx

Examples

Address starts at 0 for each register type => fe. integer located in holding reg 400001 = HR,INT0

Holding registers

HR,BIT10.5 => reg 10, bit 5 (mind byte swapping property)

HR,DOUBLE20

HR,STRING30.10 => length of this string is 10 regs

HR,SHORT40

HR,INT45

HR,LONG50

HR,FLOAT50

Input register

IR,BIT10.5 => reg 10, bit 5 (mind byte swapping property)

IR,DOUBLE20

IR,STRING30.10 => length of this string is 10 regs

IR,SHORT40

IR,INT45

IR,LONG50

IR,FLOAT50

Coil

C,BIT10

Input (digital)

I,BIT10