Function
A function calculates a result according to the current value of its inputs.
A function has no internal data and is not linked to declared instances. - Concatenate of strings.
Inputs
|
Input |
Data Type |
Range |
Unit |
Default |
Description |
|---|---|---|---|---|---|
|
IN_1 |
STRING |
|
|
|
Any string variable or constant expression. |
|
IN_N |
STRING |
|
|
|
Any string variable or constant expression. |
Outputs
|
Output |
Data Type |
Range |
Unit |
Description |
|---|---|---|---|---|
|
Q |
STRING |
|
|
Concatenation of all inputs. |
Remarks
- In the FBD Function block diagram - Describes a function between input variables and output variables. A function is described as a set of elementary blocks. Language or FFLD Language, the block can have up to 16 inputs.
- In the IL Instruction list - This is a low-level language and resembles assembly. Language or ST Structured text - A high-level language that is block structured and syntactically resembles Pascal. Language, the function accepts a variable number of inputs (at least 2).
- Use the + operator to concatenate strings.
FBD Language Example
FFLD Language Example
IL Language Example
Op1: FFLD 'AB'
CONCAT 'CD', 'E'
ST Q (* Q is now 'ABCDE' *)
ST Language Example
Q := CONCAT ('AB', 'CD', 'E');
(* now Q is 'ABCDE' *)
