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    Please Note This forum exists for community support for the Mango product family and the Radix IoT Platform. Although Radix IoT employees participate in this forum from time to time, there is no guarantee of a response to anything posted here, nor can Radix IoT, LLC guarantee the accuracy of any information expressed or conveyed. Specific project questions from customers with active support contracts are asked to send requests to support@radixiot.com.

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    Chinese brand PSU_monitoring rs485 and Mango

    How-To
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    • H
      hengst
      last edited by

      yes, that float things is special, i figured out is has something do do with "reversed"

      http://www.scadacore.com/field-applications/programming-calculators/online-hex-converter/

      0_1477943857945_upload-c4d36cfd-0296-4615-a6f7-003b8e3aeca9

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      • H
        hengst
        last edited by

        pffff, drives me crazy. putting pieces of code in the script only complains about no variable set and stuff and i don t know in what order and place to put the code.
        so,
        now i started again from scratch. but same settings do not get any data anymore.
        ( i see it coming in tcpdump )

        only in terminal i see :

        0_1477950904238_upload-a6654fa3-ebf8-4b5f-bc3d-4eccf1b5b37b

        removing everything. start from beginning. same result. this happened me twice now.

        rebooting..

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        • phildunlapP
          phildunlap
          last edited by

          Perhaps the device holds open the connection and your timeout is set to 0? I would give it a try with a 1000ms timeout or so.

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          • H
            hengst
            last edited by

            Nope, reboot did not help, rebooting device and connections did not help.

            settings :

            0_1477951949659_upload-8a4e25f9-e204-4559-9642-7b9b6c0784e3

            0_1477952027989_upload-9a895995-1c71-4f83-831c-8f67c82813f5

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            • phildunlapP
              phildunlap
              last edited by

              Your value index is wrong. It should be 0. and your value regex can just be .*

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              • H
                hengst
                last edited by

                i removed everything and restarted Mango.

                The "value index: set to 1 was indeed the bottleneck. ( i checked to see what difference 0 or 1 made.

                so i have data again,

                The errors
                "
                WARN 2016-10-31 23:57:49,316 (com.serotonin.m2m2.rt.dataSource.PollingDataSource$2.execute:228) - PSU-tcp_ip: poll scheduled at 2016/10/31 23:57:49.316 aborted because Task Currently Runnining
                "
                in terminal are still there do.

                i don t care at the moment, as getting things running is more important to me at the moment.

                now i start building COMMAND and RESPONSE from the beginning of the forum..

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                • phildunlapP
                  phildunlap
                  last edited by

                  I mentioned how to fix that, you would turn your timeout down from 50000 ms to less than your polling interval, so less than 5000.

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                  • H
                    hengst
                    last edited by

                    That fixed it indeed.

                    i noticed i can check scripting code by clicking on the "little green Script dot".

                    Its still not clear to me.

                    • Data source collects makes connection to device. ( interval for set here )
                      that is the easy part,

                    • tcp/ip Data point asks for data ( command data point )

                    • tcp/ip Data point response listen for data

                    • tcp/ip Data point "link" this to Scripting data point, "message queue" datapoint.

                    • in the "link" script screen i put in ?? which pieces of code ?

                    • in the Script Data source i also put in which pieces ?

                    i tried a lot of combinations, but i don t see it.

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                    • phildunlapP
                      phildunlap
                      last edited by

                      0_1478012753217_point-links.png

                      Response --> Point Link to parse values --> Scripting Data Source to process message queue into points' values

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                      • H
                        hengst
                        last edited by hengst

                        Alright i got it. thnx.

                        i had little play with :

                        var busVoltage = /[0-9A-Fa-f]{46}([0-9A-Fa-f]{8}).*/.exec(source.value);
                        var extractedValue = busVoltage[1];

                        print (busVoltage[1]);

                        Script result:
                        42453939

                        so that works, i found code for converting the hex to float, but no knowledge of writing (java) coding structure is a show stopper at the moment. but i do have fun learning , gehehe

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                        • phildunlapP
                          phildunlap
                          last edited by

                          Nice!

                          All the scripts use JavaScript.

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                          • H
                            hengst
                            last edited by hengst

                            little update ,

                            i found that i need to convert in javascript the with sort of

                            function hex2float(num) {
                            var sign = (num & 0x80000000) ? -1 : 1;
                            var exponent = ((num >> 23) & 0xff) - 127;
                            var mantissa = 1 + ((num & 0x7fffff) / 0x7fffff);
                            return sign * mantissa * Math.pow(2, exponent);
                            }
                            
                            
                            
                            window.alert (hex2float("0xA4703942"));
                            //flipped does the trick
                            window.alert (hex2float("0x423970A4"));
                            // outcome 46,36..... ( not rounded )
                            
                            ``
                            
                            so little progress here.
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                            • H
                              hengst
                              last edited by

                              Perfectum Resultativum ;

                              0_1478170444805_upload-5743d503-afdb-46f8-8648-2edc42e2fdcc

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                              • H
                                hengst
                                last edited by

                                now put all this in Mango needs again some pointers i think..

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                                • H
                                  hengst
                                  last edited by

                                  i got this in " point links as script " , is this ok ?

                                  0_1478275755900_upload-2b88dd9b-44ca-49ba-82c2-ab67bf96dfa0

                                  and what to put in :

                                  the script - source script. ?

                                  i tried 1000 different combinations. and reading the wiki / manuals. but sorry, i don't
                                  get it...

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                                  • phildunlapP
                                    phildunlap
                                    last edited by

                                    Looking at your message queue, there are no identifiers. I assume this is because this is always for the same point. You could connect the point link to a point directly representing that value, if there is only one point's value in a message. Otherwise, you'll want some identifiers so that your script can parse the message queue and set points identified by the identifier to the value. I would have the identifiers in an object, where the object looks something like...

                                    { "identifier1" : p334, .....}
                                    

                                    Where p334 is the variable name for the context point of the script.

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                                    • H
                                      hengst
                                      last edited by

                                      identifiers, object etc, is probably JavaScript terms....hmm and i was thinking it was almost done, gehehe.
                                      i need a neighbor with programming skills ( the neighbors house is for sale btw )
                                      so back to learning books ..

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                                      • phildunlapP
                                        phildunlap
                                        last edited by

                                        Ha! Well, we'll see how the politics here go ;)

                                        Identifier is just a name that you can use in both places. Object is a JavaScript term for things defined as { "key": value }. Other names are Map and Dictionary.

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                                        • H
                                          hengst
                                          last edited by

                                          ok learned "Object"

                                          Can someone point me some explanation links about :

                                          var identifierMap = { "messageIdentifier" : contextPoint1 ....  } 
                                          

                                          cant find much on " indentifierMap " on internet somehow.

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                                          • phildunlapP
                                            phildunlap
                                            last edited by

                                            That's just a variable name, so that later in the script you can type

                                            var ident = "messageIdentifier";
                                            identifierMap[ ident ].set( /*your value here*/ );
                                            

                                            Where context points are added to the script through the UI of the Scripting data source.

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