Data logging possibilities / to be opened in Matlab
So far we are connecting an OPC Server and retrieve the process data to an Excel file. For efficient data analysis Matlab is used. Converting big Excel filets to .mat files takes a very long time. Is there any alternative given by Freelance to retrieve data efficiently so that the file can be opened or converted easily in Matlab (similar to .lvm of LabView)?
Is there any chance to log data with DigiBrowse? So far it was considered as not helpful, as it seems that only the "Trends" can be seen. A trend does not allow more than 6(ish) variables. Furthermore there is no option of aligning the data as wanted.
Yes, you can log data through many ways* and can open those logged data in Digi browse to analyze offline. As well as those data you export in .csv file format.
Many ways * mean to say you can log via SSL1/SSLN system and process data logging,OpLog - operation log, Disturbance course log, trending.
Even trend values you can see in table format in Digi browse and can export it into .csv file format.
Check image here with, (pls note as image is from Freelance 2016 Digi browse renamed to Archive browser.)
I'd just like to remark that MATLAB can retrieve data directly from OPC (BTDT). Using the OPC Toolbox you can either record data directly into MATLAB data structures and analyse them afterwards, or use callback functions to act on real-time data (e.g. implement a closed loop control).