Hi the community,
I would like to retreive data from Historian to PI.
The data are stored in a Historian DB in GMT+1. Proficy Historian application can read without problem the timestamp of the data and convert them in UTC Time correctly.
I use Matrikon OPC Server to get data in iHistorian DB.
I use OPC HDA connected to Matrikon.
My problem : when I use PI_HDA Tool, I noted that the timestamps are not good in winter time range : the same rule is applicated to the winter timestamp and summer time (DST) : -2 hours (server is in Time Zone GMT+1 DST)
I did several tests with 'Local Time' set or not, changing as well the server Time Zone to GMT/UTC : the UTC Winter timestamps are not good.
It seems that OPC HDA cannot translate correctly. Only using one rule for all data timestamps : minus 2 hours (UTC+1 DST --> UTC)
Does someone have already this issue ?
Example : Proficy Historian in UTC Time Zone : continuous data
PI_Hda Tool without 'Local Time' option (=UTC) : an 1 hour offset