Gets the time and date of a trend at an offset for a specified pen. The Offset should be a value between 0 (zero) and the number of samples displayed on the trend.
Syntax
TrnGetBufTime(nAN, Pen, Offset)
nAN:
The AN where the trend is located.
Pen:
The trend pen number:
0 - The pen currently in focus
1...8 - Pen1. . .Pen8
Offset:
The trend buffer offset, in samples. The number of samples can range from 0 to the maximum number of samples that can display on the trend - 1.
Return Value
A time/date variable. If Offset is not within boundaries, 0 (zero) is returned. If nAN or Pen is invalid, 0(zero) is returned and an error code is set.
Related Functions
Example
! For the trend at AN20
INT time;
time = TrnGetBufTime(20,0,10);
IF time <> 0 THEN
DspText(31,0,TimeToStr(time,2));
END
/* Displays the trend date at offset 10 for the pen currently in focus. The time will display at AN31. */
See Also
Published June 2018