Access Rapid SCADA data from Node-RED

[kumajaya]

Here it is: Node-RED flow

But got too much data for 5 minutes last data and we must set minutes data to 1 minute for a proper data response.

[greenfoxx]

Hi!

Could you please clarify your question?

[kumajaya]

I expect last 5 minutes ‘minutes data’ = 5 datapoints but I got a thousands datapoints. My request:

{
   "panelId":1,
   "range":{
      "from":"2020-09-14T12:29:52.810Z",
      "to":"2020-09-14T12:34:52.811Z"
   },
   "interval":"30s",
   "intervalMs":30000,
   "targets":[
      {
         "target":"3201",
         "type":"timeserie"
      },
      {
         "target":"3202",
         "type":"timeserie"
      }
   ],
   "format":"json",
   "maxDataPoints":5
}

And no data update in between 23:59 – 06:59, it’s strange.

• This reply was modified 5 years, 2 months ago by kumajaya.

[kumajaya]

I’m talking about Grafana Data Provider API access from Node-RED.

[greenfoxx]

Could you please provide response from Grafana?
Grafana Data Provider API represents parameters transmitted to Grafana for build graph and converts the specified date and time to the unix milliseconds.

• This reply was modified 5 years, 2 months ago by greenfoxx.

[kumajaya]

Yes, I analyzed Grafana communication using Wireshark, same result. I always got today minutes data (from 00:00) even Grafana asking for 5 minutes last data.

[greenfoxx]

Could you please provide response from Grafana? It’s help me.

[kumajaya]

Request from Grafana dashboard: https://api.npoint.io/3b18da2d456f256ec75e
Response from Grafana Data Provider: https://api.npoint.io/c8625b14b7d1d496f6a8

[greenfoxx]

Thank you for details. We’ll investigate the problem and issue a fix. Thanks for the report.

[greenfoxx]

We fixed this issue.

[kumajaya]

I just confirmed it. Now I really got five data for last five minutes time range. Thank you.

But I have a different experience on Linux, Ubuntu 20.04 LTS. Sometime Grafana just shown no data. I have to debug it further, installed this modul on both Windows and Linux, RS running on Linux.

[Mikhail]

@kumajaya thank you for your help. It is very useful. We will check this.

[greenfoxx]

Thank you very much Kumajaya! We accepted your changes in the last commit. You were right.
The issue has been fixed.

[kumajaya]

Great! Very proud if I could contribute back to Rapid SCADA. BTW, RS need a better logo 😀

[kumajaya]

@greenfoxx @Mikhail Please check https://github.com/kumajaya/scada-community/commit/46d9f43fc3ee0b37b65c83cfa337af63a0fd4b4b

[Author]

Posts