Because it was said that there is only one debug node in the entire flow, here is an export of the flow again:
I counted about 12 debug nodes.
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***********","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":710,"y":750,"wires":[]},{"id":"2d220ce9.1e5e0c","type":"switch","z":"6857e430.f6d30c","name":"","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"REQUEST","vt":"str"},{"t":"eq","v":"DETECTED","vt":"str"},{"t":"eq","v":"FULL","vt":"str"},{"t":"eq","v":"DISCONNECTED","vt":"str"}],"checkall":"true","repair":false,"outputs":4,"x":1140,"y":650,"wires":[["ec2e36aa.e5389"],["41558571.297f34","b771e11.08c87a"],["f27aa38a.279858","c21a245b.a732d8"],["f27aa38a.279858","c21a245b.a732d8"]],"outputLabels":["Request","Detected","Full",null]},{"id":"ec2e36aa.e5389","type":"change","z":"6857e430.f6d30c","name":"start","rules":[{"t":"set","p":"payload","pt":"msg","to":"start","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1330,"y":620,"wires":[["eea97116.3cd3d8","bc4bbb62.2cd07"]]},{"id":"41558571.297f34","type":"change","z":"6857e430.f6d30c","name":"reset","rules":[{"t":"set","p":"payload","pt":"msg","to":"cancel","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1330,"y":650,"wires":[["eea97116.3cd3d8","ca6ffad5.144e5"]]},{"id":"eea97116.3cd3d8","type":"mytimeout","z":"6857e430.f6d30c","name":"","outtopic":"","outsafe":"1","outwarning":"","outunsafe":"0","warning":"","timer":"30","debug":false,"ndebug":false,"ignoreCase":false,"repeat":false,"again":false,"x":1350,"y":740,"wires":[["8f861653.dd9798","9eed7175.b86bf"],["8ead79e1.cc549"]]},{"id":"f27aa38a.279858","type":"change","z":"6857e430.f6d30c","name":"reset","rules":[{"t":"set","p":"payload","pt":"msg","to":"0","tot":"num"}],"action":"","property":"","from":"","to":"","reg":false,"x":1330,"y":680,"wires":[["eea97116.3cd3d8","7307333f.008e14"]]},{"id":"5a84ac71.b0bdb4","type":"inject","z":"6857e430.f6d30c","name":"","topic":"","payload":"REQUEST","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":530,"y":500,"wires":[["3c73ee77.0d2762"]]},{"id":"ab025bd8.105d2","type":"inject","z":"6857e430.f6d30c","name":"","topic":"","payload":"DETECTED","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":520,"y":530,"wires":[["2b6dbbd.91f5e44"]]},{"id":"65dceced.e158c4","type":"inject","z":"6857e430.f6d30c","name":"","topic":"","payload":"FULL","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":540,"y":560,"wires":[["e98e2197.7bccc8"]]},{"id":"8f861653.dd9798","type":"debug","z":"6857e430.f6d30c","name":"Output","active":false,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","x":1600,"y":760,"wires":[]},{"id":"b1cfc72a.bd866","type":"debug","z":"6857e430.f6d30c","name":"Message","active":false,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","x":1790,"y":920,"wires":[]},{"id":"57d5a16d.698ed","type":"switch","z":"6857e430.f6d30c","name":"","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"0","vt":"num"}],"checkall":"true","repair":false,"outputs":1,"x":1350,"y":870,"wires":[["938bfc97.fe9928"]]},{"id":"42999298.f34cbc","type":"trigger","z":"6857e430.f6d30c","op1":"stop","op2":"go","op1type":"str","op2type":"str","duration":"2","extend":false,"units":"s","reset":"","bytopic":"all","name":"","x":1200,"y":830,"wires":[["c9cc6e2a.2dcd18"]]},{"id":"b3432ef6.eec208","type":"gate","z":"6857e430.f6d30c","name":"","controlTopic":"control","defaultState":"open","openCmd":"go","closeCmd":"stop","toggleCmd":"toggle","defaultCmd":"default","persist":false,"x":1190,"y":870,"wires":[["57d5a16d.698ed"]]},{"id":"c9cc6e2a.2dcd18","type":"change","z":"6857e430.f6d30c","name":"reset","rules":[{"t":"set","p":"topic","pt":"msg","to":"control","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1350,"y":830,"wires":[["b3432ef6.eec208"]]},{"id":"938bfc97.fe9928","type":"change","z":"6857e430.f6d30c","name":"reset","rules":[{"t":"set","p":"payload","pt":"msg","to":"Failed to connect","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1560,"y":870,"wires":[["b1cfc72a.bd866"]]},{"id":"7253689c.d9051","type":"delay","z":"6857e430.f6d30c","name":"","pauseType":"delay","timeout":"1","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":1570,"y":830,"wires":[["b3432ef6.eec208"]]},{"id":"829b3296.70ed18","type":"comment","z":"6857e430.f6d30c","name":"Relay control","info":"Output to the relay and maybe some indication\nthat it is \"in use\".","x":1760,"y":680,"wires":[]},{"id":"5aeaf67e.f92878","type":"comment","z":"6857e430.f6d30c","name":"Text output","info":"This is a text message indicating the state of\nwhat is happening.\n","x":1790,"y":880,"wires":[]},{"id":"8b930a43.9cfa7","type":"link in","z":"6857e430.f6d30c","name":"","links":["7307333f.008e14"],"x":1095,"y":830,"wires":[["42999298.f34cbc","892b38d4.d338c8"]]},{"id":"7307333f.008e14","type":"link out","z":"6857e430.f6d30c","name":"","links":["8b930a43.9cfa7"],"x":1445,"y":680,"wires":[]},{"id":"ca6ffad5.144e5","type":"link out","z":"6857e430.f6d30c","name":"","links":["b47d2dc1.8a7448"],"x":1445,"y":650,"wires":[]},{"id":"b47d2dc1.8a7448","type":"link 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in","z":"6857e430.f6d30c","name":"","links":["bc4bbb62.2cd07"],"x":1095,"y":960,"wires":[["479104fb.b3c57c","8b8da88f.e96be"]]},{"id":"892b38d4.d338c8","type":"change","z":"6857e430.f6d30c","name":"Full","rules":[{"t":"set","p":"payload","pt":"msg","to":"Full","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1190,"y":920,"wires":[["b3dfffd6.307b68","b1cfc72a.bd866","6d487ae0.0d42ec"]]},{"id":"9eed7175.b86bf","type":"change","z":"6857e430.f6d30c","name":"set","rules":[{"t":"set","p":"topic","pt":"msg","to":"CONTROL","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1600,"y":730,"wires":[["dba72950.12bf4"]]},{"id":"23bf7421.4e28c4","type":"udp out","z":"6857e430.f6d30c","name":"","addr":"192.168.0.21","iface":"","port":"6723","ipv":"udp4","outport":"","base64":false,"multicast":"false","x":2680,"y":1280,"wires":[]},{"id":"ae18dc1c.f0445","type":"link in","z":"6857e430.f6d30c","name":"","links":["dba72950.12bf4"],"x":1005,"y":1240,"wires":[["db8ee5e5.7ba0a8"]]},{"id":"dba72950.12bf4","type":"link out","z":"6857e430.f6d30c","name":"","links":["ae18dc1c.f0445"],"x":1765,"y":730,"wires":[]},{"id":"11d0df79.5b21d1","type":"inject","z":"6857e430.f6d30c","name":"","topic":"","payload":"foo","payloadType":"str","repeat":"4","crontab":"","once":false,"onceDelay":0.1,"x":1100,"y":1280,"wires":[["48d58c55.c48744"]]},{"id":"48d58c55.c48744","type":"function","z":"6857e430.f6d30c","name":"loop","func":"if (msg.topic == \"RESET\")\n{\n context.set(\"value\",0);\n return;\n}\nvar value = context.get(\"value\")||0;\nvalue = (value + 1)%2;\ncontext.set(\"value\",value);\nmsg.payload = value;\nreturn msg;","outputs":1,"noerr":0,"x":1260,"y":1280,"wires":[["eb971b97.ad26e8"]]},{"id":"eb971b97.ad26e8","type":"gate","z":"6857e430.f6d30c","name":"","controlTopic":"control","defaultState":"closed","openCmd":"GO","closeCmd":"STOP","toggleCmd":"toggle","defaultCmd":"default","persist":false,"x":1420,"y":1240,"wires":[["ddaf06a1.93f2"]]},{"id":"db8ee5e5.7ba0a8","type":"function","z":"6857e430.f6d30c","name":"","func":"msg.topic = \"CONTROL\";\nif (msg.payload === \"1\")\n{\n msg.payload = \"GO\";\n} else\n{\n msg.payload = \"STOP\";\n}\nreturn msg;","outputs":1,"noerr":0,"x":1100,"y":1240,"wires":[["f8fc3bcd.05547","eb971b97.ad26e8"]]},{"id":"ddaf06a1.93f2","type":"switch","z":"6857e430.f6d30c","name":"","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"0","vt":"num"},{"t":"eq","v":"1","vt":"num"}],"checkall":"true","repair":false,"outputs":2,"x":1420,"y":1280,"wires":[["397645c.b3929ba"],["b6b84661.c95cb"]]},{"id":"397645c.b3929ba","type":"function","z":"6857e430.f6d30c","name":"ONE","func":"msg.payload = \"ONE\";\nmsg1 = {payload:\"OFF\"};\nreturn [msg,msg1];","outputs":2,"noerr":0,"x":1590,"y":1230,"wires":[["31003b18.17b7dc","76d3ece5.9740dc"],["206c0b8b.3719b4"]]},{"id":"b6b84661.c95cb","type":"function","z":"6857e430.f6d30c","name":"TWO","func":"msg.payload = \"TWO\";\nmsg1 = {payload:\"OFF\"};\nreturn [msg,msg1];","outputs":2,"noerr":0,"x":1590,"y":1330,"wires":[["5d306c6.6120094","76d3ece5.9740dc"],["3c22093c.92e6be"]]},{"id":"f8fc3bcd.05547","type":"switch","z":"6857e430.f6d30c","name":"","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"STOP","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":1590,"y":1280,"wires":[["3c22093c.92e6be","206c0b8b.3719b4","bbdc86a5.6d69b","1e41a236.47de5e"]]},{"id":"101b2f42.e48061","type":"change","z":"6857e430.f6d30c","name":"Stop","rules":[{"t":"set","p":"payload","pt":"msg","to":"STOP","tot":"str"},{"t":"set","p":"topic","pt":"msg","to":"CONTROL","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":1190,"y":1050,"wires":[["f7e36eef.9922","6d487ae0.0d42ec"]]},{"id":"31003b18.17b7dc","type":"change","z":"6857e430.f6d30c","name":"Relay 1 ON","rules":[{"t":"set","p":"payload","pt":"msg","to":"11","tot":"str"},{"t":"set","p":"charger_number","pt":"flow","to":"1","tot":"num"}],"action":"","property":"","from":"","to":"","reg":false,"x":2440,"y":1220,"wires":[["23bf7421.4e28c4"]]},{"id":"3c22093c.92e6be","type":"change","z":"6857e430.f6d30c","name":"Relay 1 OFF","rules":[{"t":"set","p":"payload","pt":"msg","to":"21","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":2440,"y":1260,"wires":[["23bf7421.4e28c4"]]},{"id":"5d306c6.6120094","type":"change","z":"6857e430.f6d30c","name":"Relay 2 ON","rules":[{"t":"set","p":"payload","pt":"msg","to":"12","tot":"str"},{"t":"set","p":"charger_number","pt":"flow","to":"2","tot":"num"}],"action":"","property":"","from":"","to":"","reg":false,"x":2440,"y":1340,"wires":[["23bf7421.4e28c4"]]},{"id":"206c0b8b.3719b4","type":"change","z":"6857e430.f6d30c","name":"Relay 2 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Full","tooltip":"","color":"","bgcolor":"","icon":"","payload":"FULL","payloadType":"str","topic":"","x":670,"y":560,"wires":[["ce734aa1.a7f74"]]},{"id":"3c73ee77.0d2762","type":"ui_button","z":"6857e430.f6d30c","name":"Request","group":"695293e8.77b0a4","order":5,"width":0,"height":0,"passthru":true,"label":"D2 Request","tooltip":"","color":"","bgcolor":"","icon":"","payload":"REQUEST","payloadType":"str","topic":"","x":680,"y":500,"wires":[["ce734aa1.a7f74"]]},{"id":"2b6dbbd.91f5e44","type":"ui_button","z":"6857e430.f6d30c","name":"Detected","group":"695293e8.77b0a4","order":6,"width":0,"height":0,"passthru":true,"label":"D2 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same\ntime.\n","x":1080,"y":440,"wires":[]},{"id":"8872ea1e.1b54f","type":"ui_button","z":"6857e430.f6d30c","name":"Disconnected","group":"695293e8.77b0a4","order":8,"width":0,"height":0,"passthru":true,"label":"D2 Disconnected","tooltip":"","color":"","bgcolor":"","icon":"","payload":"DISCONNECTED","payloadType":"str","topic":"","x":700,"y":590,"wires":[["ce734aa1.a7f74"]]},{"id":"f06599d7.559798","type":"inject","z":"6857e430.f6d30c","name":"","topic":"","payload":"DISCONNECTED","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":500,"y":590,"wires":[["8872ea1e.1b54f"]]},{"id":"3b1394d7.247a9c","type":"debug","z":"6857e430.f6d30c","name":"Device Input","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":1160,"y":590,"wires":[]},{"id":"2bcb7fcb.309ad","type":"debug","z":"6857e430.f6d30c","name":"Switch on Charger 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