Get timestamp of data point value (CTRL)

[michael.danzer]

Hi,

if I would want to get the time stamp of the last value change of a datapoint, how would I do that in a CTRL script? I already checked the help document but I found nothing on that topic.

I want to evaluate if the value change is not older than 5 seconds for example.

Thanks
Regards

Michael Danzer

[leoknipp]

The timestamp is saved in the attribute _stime for the configs _original, _online and _offline.
When reading current values normally the conifg _online is used.

Doing a loop, e.g. using dpGet(), to check the last update time is not the best approach. Normally a connect function (e.g. dpConnect()) is used to get the current values.

Best Regards
Leopold Knipp
Senior Support Specialist

[Gertjan van Schijndel]

Perhaps the function 'dpGetMaxAge' is of interest to you.
It will instruct the driver to get a new value if the value is older than the specified maximum age.
So if possible it will always return a value that is not too old.