Do you mean that the numbers in the buffer are just the values that you wish to populate the object with, or do you think that whole object, including field names is contained in that buffer? It isn't long enough for that.
If the former, then how does the data in the buffer map onto the object?
The document does not tell me how you configured your mqtt in node. I was looking to see what the output is configured to.
P.S. The data looks compressed when outputed as a string from the mqtt in node.
According to the manual you linked, data starts at byte 6, and every value is (256*byte-n) + (byte-n1)
The mqtt format will be a packet of 40 hex bytes. Each key value in the json(e.g PrdWt), is constructed as 256*byte0+byte1.
The offset of the 1st value in the json (“PrdWt”) is the 6th byte offset of the byte stream. So,
PrdWt = byte 6 *256 + byte 7
nOff = byte 8 * 256 + byte 9 and so on
Essentially, the data is a byte reversed array of 16bit values with data starting at byte 6.
Following that specification, using the buffer-parser node like this
I have no idea if that is correct or not (I suspect the buffer data you provided does NOT match the result in your first post)
Demo flow...
[{"id":"2df7243189d4a33a","type":"inject","z":"1b5ed5b363954ae7","name":"inject your buffer","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"CC50E3EBD81D/event","payload":"[1,3,80,0,0,3,232,0,0,5,93,0,0,0,0,5,93,42,224,26,207,37,138,107,57,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0]","payloadType":"bin","x":320,"y":820,"wires":[["86da72d0ea660d34"]]},{"id":"1fb0717a014c6dd5","type":"debug","z":"1b5ed5b363954ae7","name":"Result","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":790,"y":880,"wires":[]},{"id":"86da72d0ea660d34","type":"buffer-parser","z":"1b5ed5b363954ae7","name":"","data":"payload","dataType":"msg","specification":"spec","specificationType":"ui","items":[{"type":"uint16be","name":"PrdWt","offset":6,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"nOff","offset":8,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"nPChg","offset":10,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"nCChg","offset":12,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"nOvrL","offset":13,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"nEOff","offset":16,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"ovrTl","offset":18,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"winTl","offset":20,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"blwTl","offset":22,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"tPrdOK","offset":24,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"DPvalue","offset":26,"length":1,"offsetbit":0,"scale":"1","mask":""}],"swap1":"swap16","swap2":"","swap3":"","swap1Type":"swap","swap2Type":"swap","swap3Type":"swap","msgProperty":"payload","msgPropertyType":"str","resultType":"keyvalue","resultTypeType":"return","multipleResult":false,"fanOutMultipleResult":false,"setTopic":true,"outputs":1,"x":510,"y":820,"wires":[["f53d51a2895034b0"]]},{"id":"f53d51a2895034b0","type":"function","z":"1b5ed5b363954ae7","name":"Populate Time and Device_ID","func":"msg.payload.Device_ID = msg.topic.split('/')[0]\nmsg.payload.Time = new Date().toISOString()\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":750,"y":820,"wires":[["1fb0717a014c6dd5"]]}]
