And that in his experience, the transaction time (including all overhead) will not be stable below 100 ms. My suggestion that they could use Raspberry Pi has received a critical response – the user considered it to be a slow and practically unusable device. He wrote that he could not use a SCADA system, which usually does not have a fast enough reading cycle.Īnother user has written in several posts that the total data acquisition time (including writing to the SQL database) was not able to be less than 200 ms. The value of the digital signals changed so that they were in the ON state for about 100 ms. A Reddit user requested to write several measurement points to the SQL database on the change of the value, with a timestamp. About a year ago, I joined a discussion on Reddit.
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