RE: Charting Process Data

Hello, I have a similar issue.

                                             1. the link <https://github.com/PLCnext/HTML5_with_REST> is not accessible any more.
                                             2. Is the way explained in the August 2019 still the best way?   

Because I have to plot historical data that I would save with the datalogger feature.
So instead of REST API I would use SQlite or OPC UA library in JS.
Any other way?
Maybe a eHMI object in the next release as indicated in https://www.plcnext-community.net/en/discussions-2-offcanvas/trend.html ?

Thanks, M256

Hello M256, have a look here for the REST api documentation.

I will inquire about the state of the eHMI object and update you on that asap.
kind regards,
Oliver

Initial Topic

Dear M256, sorry for the late reply, but at least I have good news. With FW 2021.0LTS (just released for AXC F 1152/2152) we’ve introduced an TSDB which can be used for the integrated real-time datalogger.

In combination with the brand new “chart” object in PLCnext Engineer 2021.0LTS you have now a very easy way to visualise the historicals inside a PLCnext HMI application. Just follow the introduction in the PLCnext Engineer Help, just search for “chart”. Take care, Frank


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Thanks!