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. - Increase a numerical variable.
Inputs
|
Input |
Data Type |
Range |
Unit |
Default |
Description |
|---|---|---|---|---|---|
|
IN |
ANY |
|
|
|
Numerical variable (increased after call). See Data In / Data Out for more information. |
Outputs
|
Output |
Data Type |
Range |
Unit |
Description |
|---|---|---|---|---|
|
Q |
ANY |
|
|
Increased value. |
Remarks
- This function is particularly designed for ST Language.
- It allows simplified writing as assigning the result of the function is not mandatory.
- When the function is called, the variable connected to the IN input is decreased and copied to Q.
- All data types are supported except BOOL and STRING: for these types, the output is the copy of IN.
- For real values, a variable is decreased by 1.0.
- For time values, a variable is decreased by 1 ms.
- The IN input must be directly connected to a variable.
- It cannot be a constant or complex expression.
FBD Language
FFLD Language
IL Language
Not available.
ST Language
IN := 1;
Q := INC (IN);
(* now: IN = 2 ; Q = 2 *)
INC (IN); (* simplified call *)
