Hello friends. Its been a while. I once posted a problem, where i wanded to read from one adress, that contained multiple information. For example adress 100 was listed in the documenation and contained multiple values: ADR: 100.1 (bool value X) ADR: 100.2 (bool value Y) ADR: 100.3 (bool value Z) (and so on) If someone want to read it: First project. Is Node-red the way to go Here is my solution, how to read from an adress 100 that is splited into 6 "sub" adresses (100.1 , 100,2 ...) [ { "id": "c883412ea76f64d2", "type": "modbus-flex-getter", "z": "0c822967e78b69a8", "name": "", "showStatusActivities": false, "showErrors": false, "logIOActivities": false, "server": "0e3ec676f3e39293", "useIOFile": false, "ioFile": "", "useIOForPayload": false, "emptyMsgOnFail": false, "keepMsgProperties": false, "x": 1630, "y": 800, "wires": [ [ "c3da37c4c8cd7d50", "c14c540e23bfcdbc" ], [] ] }, { "id": "c3da37c4c8cd7d50", "type": "modbus-response", "z": "0c822967e78b69a8", "name": "", "registerShowMax": 20, "x": 1630, "y": 860, "wires": [] }, { "id": "51c6209a18301ef8", "type": "function", "z": "0c822967e78b69a8", "name": "Read_101", "func": "msg.payload =\n{ value: msg.payload, \n'fc': 3, \n'unitid': 0, \n'address': 100, \n'quantity':1 \n \n} ;\nreturn msg", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1380, "y": 800, "wires": [ [ "c883412ea76f64d2" ] ] }, { "id": "a8b39931d1595820", "type": "inject", "z": "0c822967e78b69a8", "name": "", "props": [ { "p": "payload" }, { "p": "topic", "vt": "str" } ], "repeat": "2", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 1410, "y": 940, "wires": [ [ "51c6209a18301ef8" ] ] }, { "id": "c14c540e23bfcdbc", "type": "buffer-parser", "z": "0c822967e78b69a8", "name": "", "data": "payload", "dataType": "msg", "specification": "spec", "specificationType": "ui", "items": [ { "type": "bool", "name": "Remote_On_Off", "offset": 1, "length": 1, "offsetbit": 0, "scale": "1", "mask": "" }, { "type": "bool", "name": "Deaerating", "offset": 1, "length": 1, "offsetbit": 1, "scale": "1", "mask": "" }, { "type": "bool", "name": "AnalogueMode", "offset": 1, "length": 1, "offsetbit": 2, "scale": "1", "mask": "" }, { "type": "bool", "name": "TimerMode", "offset": 1, "length": 1, "offsetbit": 3, "scale": "1", "mask": "" }, { "type": "bool", "name": "SlowMode", "offset": 1, "length": 1, "offsetbit": 4, "scale": "1", "mask": "" }, { "type": "bool", "name": "Velocity", "offset": 1, "length": 1, "offsetbit": 5, "scale": "1", "mask": "" } ], "swap1": "", "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": 1670, "y": 960, "wires": [ [ "58b5d9ecd58ba23f" ] ] }, { "id": "58b5d9ecd58ba23f", "type": "debug", "z": "0c822967e78b69a8", "name": "", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 1890, "y": 860, "wires": [] }, { "id": "0e3ec676f3e39293", "type": "modbus-client", "name": "CIM500", "clienttype": "tcp", "bufferCommands": true, "stateLogEnabled": false, "queueLogEnabled": false, "tcpHost": "10.240.6.39", "tcpPort": "502", "tcpType": "DEFAULT", "serialPort": "/dev/ttyUSB", "serialType": "RTU-BUFFERD", "serialBaudrate": "9600", "serialDatabits": "8", "serialStopbits": "1", "serialParity": "none", "serialConnectionDelay": "100", "serialAsciiResponseStartDelimiter": "0x3A", "unit_id": 1, "commandDelay": 1, "clientTimeout": 1000, "reconnectOnTimeout": true, "reconnectTimeout": 2000, "parallelUnitIdsAllowed": true } ] My problem rn is, now kinda the same, but now i want to write to an adress that has "subadresses". For example, i want to write to the adress 101.1, I tried to find an answer and tested around to make it work, but i cant find a way to manage it. I am a bit confused ho to implement the buffer parser in the writing process. Thats what i have so far: [ { "id": "a49c5714d15ff31a", "type": "modbus-flex-write", "z": "0c822967e78b69a8", "name": "", "showStatusActivities": false, "showErrors": false, "server": "0e3ec676f3e39293", "emptyMsgOnFail": false, "keepMsgProperties": false, "x": 1510, "y": 340, "wires": [ [], [ "363f74101ce7d6ce" ] ] }, { "id": "363f74101ce7d6ce", "type": "modbus-response", "z": "0c822967e78b69a8", "name": "", "registerShowMax": 20, "x": 1530, "y": 420, "wires": [] }, { "id": "a421342e3c0ce1b7", "type": "inject", "z": "0c822967e78b69a8", "name": "", "props": [ { "p": "payload" }, { "p": "topic", "vt": "str" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 1020, "y": 280, "wires": [ [ "2c2bc60ddb01114a" ] ] }, { "id": "74f8ba5aded6e8ac", "type": "inject", "z": "0c822967e78b69a8", "name": "", "props": [ { "p": "payload" }, { "p": "topic", "vt": "str" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 1060, "y": 360, "wires": [ [ "e9de7a7d92187b5b" ] ] }, { "id": "e9de7a7d92187b5b", "type": "function", "z": "0c822967e78b69a8", "name": "0", "func": "var fc=6;\nvar sa=100;\nvar addresses=1;\nvar value=0;\nmsg.slave_ip=\"10.240.6.39\";\nmsg.payload={\"value\":value , 'fc': fc, 'unitid': 1, 'address': sa , 'quantity': addresses };\nreturn msg;", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1310, "y": 400, "wires": [ [ "a49c5714d15ff31a" ] ] }, { "id": "2c2bc60ddb01114a", "type": "function", "z": "0c822967e78b69a8", "name": "0", "func": "var fc=6;\nvar sa=100;\nvar addresses=1;\nvar value=1;\nmsg.slave_ip=\"10.240.6.39\";\nmsg.payload={\"value\":value , 'fc': fc, 'unitid': 1, 'address': sa , 'quantity': addresses };\nreturn msg;", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1310, "y": 300, "wires": [ [ "a49c5714d15ff31a" ] ] }, { "id": "0e3ec676f3e39293", "type": "modbus-client", "name": "CIM500", "clienttype": "tcp", "bufferCommands": true, "stateLogEnabled": false, "queueLogEnabled": false, "tcpHost": "10.240.6.39", "tcpPort": "502", "tcpType": "DEFAULT", "serialPort": "/dev/ttyUSB", "serialType": "RTU-BUFFERD", "serialBaudrate": "9600", "serialDatabits": "8", "serialStopbits": "1", "serialParity": "none", "serialConnectionDelay": "100", "serialAsciiResponseStartDelimiter": "0x3A", "unit_id": "1", "commandDelay": "1", "clientTimeout": "1000", "reconnectOnTimeout": true, "reconnectTimeout": "2000", "parallelUnitIdsAllowed": true } ]

The submitted values coming from the remote server (through ui-form > mqtt) are in the form ? { "Remote_On_Off":false, "Deaerating":false, "AnalogueMode":false, "TimerMode":true, "SlowMode":true, "Velocity":false } if yes .. then there is no need to process each one separately but make the necessary code change in the Function node to send them all, in the correct true/false array, the buffer nodes expect. Before the code was different just to test each one individually .. now that you receive the msg from mqtt you can change it .. Example [{"id":"e8d7e5b7ad160ba3","type":"buffer-maker","z":"54efb553244c241f","name":"","specification":"spec","specificationType":"ui","items":[{"name":"item","type":"16bitbe","length":1,"dataType":"msg","data":"payload"}],"swap1":"","swap2":"","swap3":"","swap1Type":"swap","swap2Type":"swap","swap3Type":"swap","msgProperty":"payload","msgPropertyType":"str","x":590,"y":2820,"wires":[["548c5c467742b422","fa74d004c5d1bd32"]]},{"id":"d2e7823c490b5951","type":"debug","z":"54efb553244c241f","name":"debug 3","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":940,"y":2760,"wires":[]},{"id":"23d4333be6b02380","type":"debug","z":"54efb553244c241f","name":"debug 1","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":520,"y":2760,"wires":[]},{"id":"548c5c467742b422","type":"buffer-parser","z":"54efb553244c241f","name":"","data":"payload","dataType":"msg","specification":"spec","specificationType":"ui","items":[{"type":"uint16be","name":"decimal","offset":0,"length":1,"offsetbit":0,"scale":"1","mask":""}],"swap1":"","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":790,"y":2820,"wires":[["d2e7823c490b5951","28b452d7a0fed83d"]]},{"id":"fa74d004c5d1bd32","type":"debug","z":"54efb553244c241f","name":"debug 2","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":740,"y":2760,"wires":[]},{"id":"28b452d7a0fed83d","type":"function","z":"54efb553244c241f","name":"modbus","func":"var fc = 6;\nvar sa = 100;\nvar addresses = 1;\nvar value = msg.payload.decimal; // value calculated from buffer-parser\nmsg.slave_ip = \"10.240.6.39\";\n\nmsg.payload = { \"value\": value, 'fc': fc, 'unitid': 1, 'address': sa, 'quantity': addresses };\n\nreturn msg;","outputs":2,"noerr":0,"initialize":"","finalize":"","libs":[],"x":980,"y":2820,"wires":[["413fed1f1e4fff1f","3e85f776dae01afd"],[]]},{"id":"413fed1f1e4fff1f","type":"modbus-flex-write","z":"54efb553244c241f","name":"","showStatusActivities":true,"showErrors":true,"server":"0e3ec676f3e39293","emptyMsgOnFail":false,"keepMsgProperties":false,"x":1190,"y":2860,"wires":[["30fd3044f611fa2f"],[]]},{"id":"3e85f776dae01afd","type":"debug","z":"54efb553244c241f","name":"debug 4","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":1160,"y":2760,"wires":[]},{"id":"ac25cb758761677b","type":"function","z":"54efb553244c241f","name":"process MQTT","func":"let ps = flow.get(\"pumpStatus\")\n\nps = [[msg.payload.Remote_On_Off, msg.payload.Deaerating, msg.payload.AnalogueMode, msg.payload.TimerMode, msg.payload.SlowMode, msg.payload.Velocity, false, false]]\n\nmsg.payload = ps;\n\nreturn msg;\n\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":380,"y":2820,"wires":[["e8d7e5b7ad160ba3","23d4333be6b02380"]]},{"id":"a17ce8a0f4dbc4be","type":"modbus-flex-getter","z":"54efb553244c241f","name":"","showStatusActivities":true,"showErrors":true,"logIOActivities":false,"server":"0e3ec676f3e39293","useIOFile":false,"ioFile":"","useIOForPayload":false,"emptyMsgOnFail":false,"keepMsgProperties":false,"x":630,"y":2620,"wires":[["7a6c1048507f381f","401d0bd0aefdd65c"],[]]},{"id":"7a6c1048507f381f","type":"modbus-response","z":"54efb553244c241f","name":"","registerShowMax":20,"x":670,"y":2540,"wires":[]},{"id":"c69af38291ed5350","type":"function","z":"54efb553244c241f","name":"Read_101","func":"msg.payload =\n{\n value: msg.payload,\n 'fc': 3,\n 'unitid': 1,\n 'address': 100,\n 'quantity': 1\n\n};\nreturn msg","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":440,"y":2560,"wires":[["a17ce8a0f4dbc4be"]]},{"id":"e0f40ada64ebbd1d","type":"inject","z":"54efb553244c241f","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":180,"y":2580,"wires":[["c69af38291ed5350"]]},{"id":"401d0bd0aefdd65c","type":"buffer-parser","z":"54efb553244c241f","name":"","data":"payload","dataType":"msg","specification":"spec","specificationType":"ui","items":[{"type":"bool","name":"Remote_On_Off","offset":1,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"bool","name":"Deaerating","offset":1,"length":1,"offsetbit":1,"scale":"1","mask":""},{"type":"bool","name":"AnalogueMode","offset":1,"length":1,"offsetbit":2,"scale":"1","mask":""},{"type":"bool","name":"TimerMode","offset":1,"length":1,"offsetbit":3,"scale":"1","mask":""},{"type":"bool","name":"SlowMode","offset":1,"length":1,"offsetbit":4,"scale":"1","mask":""},{"type":"bool","name":"Velocity","offset":1,"length":1,"offsetbit":5,"scale":"1","mask":""}],"swap1":"","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":860,"y":2600,"wires":[["90bca505d5c3438d"]]},{"id":"6e92964aff312500","type":"debug","z":"54efb553244c241f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":1450,"y":2600,"wires":[]},{"id":"90bca505d5c3438d","type":"change","z":"54efb553244c241f","name":"save to Context","rules":[{"t":"set","p":"pumpStatus","pt":"flow","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":1080,"y":2600,"wires":[["db16e8cc24fdf9ef"]]},{"id":"30fd3044f611fa2f","type":"link out","z":"54efb553244c241f","name":"link out 1","mode":"link","links":["c259c9c6e5f2f21a"],"x":1335,"y":2860,"wires":[]},{"id":"c259c9c6e5f2f21a","type":"link in","z":"54efb553244c241f","name":"link in 1","links":["30fd3044f611fa2f"],"x":355,"y":2520,"wires":[["c69af38291ed5350"]]},{"id":"21894a25d4b9b9dc","type":"mqtt in","z":"54efb553244c241f","name":"","topic":"CIM500/FORM_W","qos":"2","datatype":"json","broker":"b5a7c2060fae401c","nl":false,"rap":true,"rh":0,"inputs":0,"x":170,"y":2820,"wires":[["ac25cb758761677b"]]},{"id":"db16e8cc24fdf9ef","type":"function","z":"54efb553244c241f","name":"","func":"\nreturn msg;","outputs":3,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1260,"y":2600,"wires":[["6e92964aff312500"],[],[]]},{"id":"0e3ec676f3e39293","type":"modbus-client","name":"CIM500","clienttype":"tcp","bufferCommands":true,"stateLogEnabled":false,"queueLogEnabled":false,"tcpHost":"10.240.6.39","tcpPort":"502","tcpType":"DEFAULT","serialPort":"/dev/ttyUSB","serialType":"RTU-BUFFERD","serialBaudrate":"9600","serialDatabits":"8","serialStopbits":"1","serialParity":"none","serialConnectionDelay":"100","serialAsciiResponseStartDelimiter":"0x3A","unit_id":1,"commandDelay":1,"clientTimeout":1000,"reconnectOnTimeout":true,"reconnectTimeout":2000,"parallelUnitIdsAllowed":true},{"id":"b5a7c2060fae401c","type":"mqtt-broker","name":"","broker":"185.164.7.227","port":"1883","clientid":"","autoConnect":true,"usetls":false,"protocolVersion":"4","keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","birthMsg":{},"closeTopic":"","closeQos":"0","closePayload":"","closeMsg":{},"willTopic":"","willQos":"0","willPayload":"","willMsg":{},"sessionExpiry":""}] [image] Manuel_o: what causes this trouble with Slowmode the pump is Grundfos ? i tried to read a bit about it but didnt find anything in the manual. probably you have to contact the supplier

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Write to subregister via Modbus and bufferparser

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