RE: Charting Process Data
Hello,
I have a similar issue.
- the link https://github.com/PLCnext/HTML5_with_REST is not accessible any more.
- 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
Comments
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
Thanks!