The 'DataGetAiHour' function returns the AI tag data stored in file.
double DataGetAiHour(string tag, int data_type, int year, int mon, int
day, int hour);
Note : Because this function loads the data from a file, it may take a long time to excute this function. If you use this function much, the execution speed of LocalMain program slows down. Therefore, it is better to use this function only when it is absolutely necessary.
Parameters
string tag : AI tag name
int data_type : Data type that you want to load (0 = Average Value, 1 = Minimum Value, 2 = Maximum Value, 3 = Integration Value, 4 = Maximum Value of the hour - Mxaimum Value of the previous hour)
int year : Year
int mon : Month
int day : Day
int hour : Hour
Return Value
Tag data of the specified day
Example 1
@DataGetAiHour("AI_0000", 0, 1999, 12, 9, 18);
Description : The 'AI_0000' average value of 9th December 1999 18:00 is loaded.
Example 2
@DataGetAiHour("AI_0000", 1, 1999, 12, 9, 18);
Description : The 'AI_0000' minimum value of 9th December 1999 18:00 is loaded.
Relate items)