When the execution results in an error, the error code is stored in #L_CalcErrCode.
When checking the result using system variables, make sure the check takes place after the instruction has been executed. When checking the state after multiple instructions have been executed, system variables will store the result only of the last processed instruction.
If There are no items to be calculated, the total is zero and the result is zero.
Program Example
AVE
Averages 1 through 5 in Data_1 and saves the result in Data_2.
When the positive transition instruction turns ON, the AVE instruction will be executed. When the AVE instruction is executed, the average of array elements 0 through 4 of Data 1 are calculated and the result at D1 is stored in Data_2.
When using a normally-open instruction, as long as the instruction variable is ON, the AVE instruction is always executed.
|
Array Variable Name |
Data 1 |
5 Executed Instructions |
Save in |
Data 2 |
|---|---|---|---|---|
|
Element |
Data_1[0] |
+ ÷5 |
→ |
Data_2[0] |
|
Data_1[1] |
+ ÷5 |
→ |
Data_2[1] | |
|
Data_1[2] |
+ ÷5 |
→ |
Data_2[2] | |
|
Data_1[3] |
+ ÷5 |
→ |
Data_2[3] | |
|
Data_1[4] |
+ ÷5 |
→ |
Data_2[4] | |
|
Data_1[5] |
|
|
Data_2[5] | |
|
Data_1[6] |
|
|
Data_2[6] | |
|
Data_1[7] |
|
|
Data_2[7] | |
|
Data_1[8] |
|
|
Data_2[8] | |
|
Data_1[9] |
|
|
Data_2[9] | |
|
Data_1[10] |
|
|
Data_2[10] |
AVEP
When to run the instruction is different between AVE and AVEP instructions. The AVEP instruction only detects the upward transition and executes the AVEP instruction even when using a normally open instruction. As a result, even if the instruction is always on, the AVEP instruction is executed only for one scan.