damiankk Posted September 28, 2020 Report Share Posted September 28, 2020 Hi, I consider few ways to get 100 variables every second from USC-B10-TR22: 1. Create DataTable on SD card, and then get it through FTP server 2. Get data via MODBUS 3. Use any OPC client When I tested first way, there was problems with accurate timming. I forced creating line in SD file with data every 0.8s, and average time was around 0.8s, but varied between 0.6 and 1.4s Second way seems to be ok, but using Python's modbus library also occured some timming mismatch. Average was also ok, but again varied between similiar values. I'm not sure, but it also can be Python's library problem, because it is me first time with this library. So far I don't have any experience with OPC and I would like to know is it right way or not. I also tried DataSampler, but it is limited by amount of variables saved with one DataSampler, so I discontinued this way. Quote Link to comment Share on other sites More sharing options...
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