This time I would like to explain how to “Group” and “Ungroup” the Byte,Word and DWord variables to Bool Array ,Struct or User data type.Sure that you can use Variable.%X0 to finish your task, but that is not bad to learn a new things, Right?:)

Scatter

While we open the Online help in the TIA,

The “Parse the bit sequence into individual bits” instruction parses a tag of the BYTE, WORD, DWORD or LWORD data type into individual bits and saves them in an ARRAY of BOOL, an anonymous STRUCT or a PLC data type exclusively with Boolean elements.

It means that you can parse the Byte ,word DWord, LWord Variables to Bool Array, Structure, PLC Data type.

Blocks

SCATTER(IN := #SourceWord,

OUT => #DestinationArray);

Interface

	S7-1200	S7-1500
IN	Byte,Word,DWord	Byte,Word,DWord,LWord	Source data that you want to parse
OUT	Array[] of Bool, PLC data type,The length of should be 8,16,32 or 64.	Array[] of Bool, PLC data type, The length of should be 8,16,32 or 64.	Variables that you would like to parse to