Store event frame start and end time as DateTime to allow sub-millisecond duration event frames

Hi, can you provide some example use cases? What type of events are you trying to capture with event frames?

Hi Steve. Ben created this feedback item for me. We're doing a project for a T&D company, and they have done a large IoT project together with some partners. The project aims to give extra insight in their switchgear operations with all the benefits of inexpensive, stand-alone sensor units, which can be retro-fitted to any circuit breaker, disconnector, earthing switch, etc. Their transmission system is relatively stabile, resulting in not many switchgear operations. If one operation occurs at a circuit breaker, it could easily be a year until the next operation (or they could occur back-to-back for a few repetitions). Once something happens, they record everything - and need to do it with precision. An operation may result in 10 000 values, and a whole motor current event may have a duration of 200 ms. This is my event frame! In the case I reported to techsupport, I'm missing 11 out of 12 values occuring within the last millisecond of the event. That is, between 2019-11-27 14:26:33.0340000 and 2019-11-27 14:26:33.0349167. The latter timestamp is the end time I'm trying to set, but both PI System Explorer and AF SDK simply truncates everything less than 1 ms. Had it actually rounded the number up to .035 all my time series data would have been included, so that's what I'll be doing programmatically now.

Thanks Asle, we'll look into this.