Function Block Variable

Owned by CIMON (Unlicensed)
Jul 07, 2023
2 min read

Double-click Variable.

FB Variable configuration pops up.

The variable in FB folder is local variable that only works in current FB folder.

 

 

Variable Name : The same name with FB or Device address cannot be used. The maximum 16 characters are available.

I/O : From I/O pull-down menu, choose Input, Output or Input/Output.

 Input : Read integer value or device address

Output : Write device address only (Integer value is not possible)

I/O(Input and Output) : You can use one device address for both input or output.

    (Integer value is not possible)

*You cannot use below device type for Output and I/O.

  X / F/ T / TC / TS / C / CC / CS

 

Type : From Type pull-down menu, choose Bit, Word, Double Word or Float.

B (Bit) : 0 or 1

W (Word) : 2Byte (Unsigned: 0~65,535 / Signed: -32,768~32,767)

DW (Double Word) : 4Byte (Unsigned: 0~4,294,967,295 / Signed: -2,147,483,648~2,147,483,647)

F (Float) : 4Byte (3..4E +/- 38 : 7Digits)

 

Device : You cannot set up device address here. When FB is used in scan program(Ladder Logic), you can set device address for each input and output.

 

Description : Maximum 16characters are available.

  • Add Input : Default Variable name is IN + number that is persistent.