| Function Name |
ADD |
|---|---|
|
ST Operator |
+ |
|
Description |
Provides a sum total of the 2 inputs. |
|
Arguments |
Input 1 - Input n{ANY_MAGNITUDE} The ADD function can have 2 or more inputs and these can be of any type within the ANY_MAGNITUDE category (see Data Type Hierarchy). |
|
Returns |
Total {Same type as input} The total value of the inputs combined (Input 1 + Input 2 + Input 3 and so on). The type of output is dependent on the inputs. |
Example:
Function Block Diagram - ADD:
The ADD function is used to provide a total of 2 inputs. In this case, Input 1 is 2 and Input 2 is 5. The ADD function returns 7 (2+5=7)
ST Program - ADD:
The ADD function is used to provide the total value of 3 inputs. In this case, Input 1 is 2, Input 2 is 5, and Input 3 is 17. The ADD function returns 24 (2+5+17=24):
Output := ADD (Input 1, Input 2, Input 3);
Where Output, Input 1, Input 2 and Input 3 are defined as variables earlier in the ST program.
Alternatively, the same calculation can be made by using the following syntax:
Output := Input 1 + Input 2 + Input 3;
Again, where Output, Input 1, Input 2 and Input 3 are defined as variables earlier in the ST Program.