Issue
A new utility is being used to record log data and store it in the "cloud". It has been requested that the log data have timestamps every 15 minutes synchronized to the hour.
Environment
Sigma
Trend Log
Log data
Log set
Logging
Timestamp
Cause
There is no mechanism with Sigma to specify when a log set starts to process the logging data. When set to log at timed intervals the log bucket file is downloaded to the controller and processed. The timed interval then starts from that time.
There have been some requests for data to be synchronized to the hour with 15 minute log intervals.
Resolution
There is a engineering workaround to make Sigma do this.
A prog point will be needed for every value that is required to be logged. The text is below.
10 XFlo = POINT 0|41 - Object to be logged
20 IF MINUTE = 0 OR MINUTE = 15 OR MINUTE = 30 OR MINUTE = 45 THEN GOTO 40
30 RETURN VIA TEXT 92 VALUE YFlo
40 IF SECOND DOWN THEN GOTO 60
50 RETURN VIA TEXT 92 VALUE YFlo
60 YFlo = XFlo
70 RETURN VIA TEXT 92 VALUE YFlo
Then setup the log set with the log data set to "change of value".
