In my debug console i get the event object as shown. Could someone kindly let me know why and how it is generated in the flow. Thanks
object
payload: array[5]
event: object
clientX: 864
clientY: 539
bbox: array[4]
0: 822
1: 551
2: 924
3: 503
and the screen shot
The t1 node is generating this event.
@bakman2 Thanks for your prompt response. It is there in the output of debug node t1. I never coded this is the entire flow, nor i requested it. How comes it is in the debug console. Does this represent some node setting. The output looks something like a mouse event (I presume). Could you kindly elaborate further.
For ease of understanding, following is the isolated portion of flow
and here are the contents of function node
var ping=msg.payload
if(ping==='#'){
msg.payload=ping
return [null,msg]
}
var msg1={}
var msg2={}
var value=global.get(["servo","min","max","angle","cat"])
var pl=msg.payload
if(/sent/.test(pl)===true){
if(value[0]===""){
pl="Select a servo !"
msg.payload=pl
return[msg,null]
}
msg1.payload=pl
msg1.servo=value[0]
}
if(pl===""){
msg1=null
}
var payload=[]
switch(value[0]){
case "Rotate":
sNo=1;
break;
case "Lift":
sNo=3;
break;
case "Swing":
sNo=5;
break;
case "Clutch":
sNo=0;
break;
case "Neck":
sNo=2;
break;
case "Elbow":
sNo=4;
break;
default:
sNo=99
}
payload[0]=sNo
payload[1]=value[3]
payload[2]=value[1]
payload[3]=value[2]
payload[4]=value[4]
msg2.payload=payload
msg2.servo=value[0]
return [msg1,msg2];
complete flow (sorry it's being too meshed up)
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Servo","group":"ff2ede8a.a9a4b","order":2,"width":4,"height":1,"passthru":true,"options":[{"label":"Rotate","value":"Rotate","type":"str"},{"label":"Lift","value":"Lift","type":"str"},{"label":"Swing","value":"Swing","type":"str"},{"label":"Clutch","value":"Clutch","type":"str"},{"label":"Neck","value":"Neck","type":"str"},{"label":"Elbow","value":"Elbow","type":"str"}],"payload":"","topic":"","x":240,"y":40,"wires":[["a220d529.9a6738","60468ba9.3ec484","d7ba01ef.a47f9"]]},{"id":"8ce6cfe8.03cd8","type":"ui_slider","z":"2207c839.270ea8","name":"SMin","label":"","tooltip":"","group":"ff2ede8a.a9a4b","order":17,"width":4,"height":1,"passthru":true,"outs":"all","topic":"","min":"0","max":"250","step":1,"x":310,"y":200,"wires":[["b9875870.e86d58","3d73c410.e71e6c","8eec54f5.f528b8"]]},{"id":"b9875870.e86d58","type":"ui_gauge","z":"2207c839.270ea8","name":"gMin","group":"ff2ede8a.a9a4b","order":5,"width":6,"height":4,"gtype":"gage","title":"Min Pulse 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msg;","outputs":1,"noerr":0,"x":690,"y":320,"wires":[["857017b7.ec9828","40390fc8.b8b12","92842605.9ab748"]]},{"id":"832ca22b.a05e4","type":"inject","z":"2207c839.270ea8","name":"","topic":"","payload":"150","payloadType":"num","repeat":"","crontab":"","once":true,"onceDelay":0.1,"x":90,"y":260,"wires":[["3d73c410.e71e6c"]]},{"id":"380a92dc.0c694e","type":"inject","z":"2207c839.270ea8","name":"","topic":"","payload":"600","payloadType":"num","repeat":"","crontab":"","once":true,"onceDelay":0.1,"x":90,"y":360,"wires":[["841c5518.f69da8"]]},{"id":"cbded8e2.258c38","type":"inject","z":"2207c839.270ea8","name":"","topic":"","payload":"90","payloadType":"num","repeat":"","crontab":"","once":true,"onceDelay":0.1,"x":90,"y":460,"wires":[["ad1da321.09b49"]]},{"id":"fb6adc11.8275","type":"function","z":"2207c839.270ea8","name":"RE","func":"var servo=global.get(\"servo\")\nvar hi = global.get(\"angle\")\nvar lo = global.get(\"lo\")\nvar payload={}\nif(hi>lo){\n global.set(\"cat\",2)\n payload.servo=servo\n payload.REAngle=hi\n msg.payload=payload\n msg.enabled=false\n return [msg, null];\n}\nmsg.payload=`Enter value >${lo}`\nreturn[null,msg]","outputs":2,"noerr":0,"x":850,"y":360,"wires":[["fce9e9e7.ac46c8","40390fc8.b8b12","92842605.9ab748"],["f44f880.d284d78"]]},{"id":"f44f880.d284d78","type":"ui_toast","z":"2207c839.270ea8","position":"top 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msg;","outputs":1,"noerr":0,"x":710,"y":233,"wires":[["40390fc8.b8b12","4c544b58.8c03d4"]]},{"id":"5cd9f9ce.b21928","type":"file","z":"2207c839.270ea8","name":"Create File","filename":"servo settings","appendNewline":true,"createDir":true,"overwriteFile":"true","encoding":"none","x":210,"y":100,"wires":[[]]},{"id":"92842605.9ab748","type":"function","z":"2207c839.270ea8","name":"Generate payload","func":"var ping=msg.payload\nif(ping==='#'){\n msg.payload=ping\n return [null,msg]\n}\nvar msg1={}\nvar msg2={}\nvar value=global.get([\"servo\",\"min\",\"max\",\"angle\",\"cat\"])\n\nvar pl=msg.payload\nif(/sent/.test(pl)===true){\n if(value[0]===\"\"){\n pl=\"Select a servo !\"\n msg.payload=pl\n return[msg,null]\n }\nmsg1.payload=pl\nmsg1.servo=value[0]\n}\nif(pl===\"\"){\n msg1=null\n}\n\nvar payload=[]\nswitch(value[0]){\n case \"Rotate\":\n sNo=1;\n break;\n case \"Lift\":\n sNo=3;\n break;\n case \"Swing\":\n sNo=5;\n break;\n case \"Clutch\":\n sNo=0;\n break;\n case \"Neck\":\n sNo=2;\n break;\n case \"Elbow\":\n sNo=4;\n break;\n default:\n sNo=99\n}\npayload[0]=sNo\npayload[1]=value[3]\npayload[2]=value[1]\npayload[3]=value[2]\npayload[4]=value[4]\nmsg2.payload=payload\nmsg2.servo=value[0]\nreturn [msg1,msg2];","outputs":2,"noerr":0,"x":670,"y":100,"wires":[["f053287c.2cce48","901dc889.240ed8"],["fd87d46e.bc7548","514ff355.ea23cc"]]},{"id":"f053287c.2cce48","type":"ui_toast","z":"2207c839.270ea8","position":"top 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[null,null,null];","outputs":3,"noerr":0,"x":980,"y":100,"wires":[["92842605.9ab748","cdb27368.89b13"],["983290a8.a2ee4"],["1dda53b2.b2888c"]]},{"id":"d92359bb.2e92c8","type":"debug","z":"2207c839.270ea8","name":"t3","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":1210,"y":420,"wires":[]},{"id":"d7ba01ef.a47f9","type":"debug","z":"2207c839.270ea8","name":"t2","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":450,"y":240,"wires":[]},{"id":"66ab22a4.220ebc","type":"ui_switch","z":"2207c839.270ea8","name":"","label":"Angle 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<li>{{msg.payload[3]}}</li>\n <li>{{msg.payload[5]}}</li>\n <li>{{msg.payload[0]}}</li>\n <li>{{msg.payload[2]}}</li>\n <li>{{msg.payload[4]}}</li>\n</ul>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","x":1240,"y":60,"wires":[[]]},{"id":"757de576.0611fc","type":"ui_template","z":"2207c839.270ea8","group":"ff2ede8a.a9a4b","name":"servo names","order":23,"width":2,"height":4,"format":"<ul><u>Servo</u>\n <li>Rotate:</li>\n <li>Lift:</li>\n <li>Swing:</li>\n <li>Clutch:</li>\n <li>Neck:</li>\n 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How did the msg begin? What started the flow of the message - was it from a dashboard button being pressed?
Dashboard button adds those properties so it can play nicely with other nodes e.g. context menu.
Ps, add debug nodes to all nodes and you will see exactly where it is generated.
That's it. Thanks, it was generated by send button in the flow.
I'm sure you are aware, unless it is causing a problem downstream, it's nothing to worry about. If it is interfering then you have a few choices. You can generate a new msg object in your function (not recommended as you lose often useful info from the msg making debugging more difficult) or you could use a change node immediately after the button to delete the event property.
Thanks for suggestions, this is not really bothering me. What do these properties represent anyways? 
Those are the click coordinates in the Dashboard UI. Some of the widgets generate them. They are useful for building context menus: [Announce] node-red-contrib-ui-contextmenu
That's why 
@kuema Thanks, your post greatly helped me to understand the working.
[Announce] node-red-contrib-ui-contextmenu
Appreciate their work. Great job 
If you are interested in floor plans and SVG, have a look at their SVG Dashboard node as well: https://flows.nodered.org/node/node-red-contrib-ui-svg
Thanks, that would be good addition to my lib
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