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@homoran ja ich bin sicher. Hatte ich unten schon mal geschrieben.
Hier habe ich die Konvertierung hin und zurück gemacht:
Und hier hatte ich das mit dem unsigned Int schon mal erwähnt: https://forum.iobroker.net/post/989556 und hier als ich es ausprobiert hatte: https://forum.iobroker.net/post/989554
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Kein Problem. Ist doch schnell umgestellt. Und das Ergebnis auch schnell zu sehen.Jetzt fällt es mir auch wieder ein. Ja dass hattest Du auch schon mal geschrieben, du Fuchs. :+1:
Jetzt passt es und die drei Varianten laufen auch bei Minuswerten im Gleichschritt. Super Danke nochmal dafür.
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@homoran ja ich bin sicher. Hatte ich unten schon mal geschrieben.
Hier habe ich die Konvertierung hin und zurück gemacht:
Und hier hatte ich das mit dem unsigned Int schon mal erwähnt: https://forum.iobroker.net/post/989556 und hier als ich es ausprobiert hatte: https://forum.iobroker.net/post/989554
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Jetzt gilt es die signed Integerwerte an den Regler zu senden. Also erst einmal wieder die Werte vom Regler in drei Modbusregister schreiben lassen.
0 = 0
1 = 1
-1 = 65535Gut die ersten beiden Zahlen soweit kein Problem. Bei der -1 geht das Gedöns wieder los. Kriege es mit dem buffer parser wieder nicht hin. Rechne ich mit der Formel von Steve und fasse die Werte aus dem Buffer Maker zusamen, kommt der Wert 65535 raus.
Klar jetzt könnte man aus der -1 einfach eine 2 machen und schon hätte man die Aufgabe elegant umgangen. Aber einfach kann jeder. Außerdem so lernt man ja nichts.
Ich bin schon wieder auf deine Antwort gespannt. Vielleicht kapiere ich es dann auch irgendwann noch mal.
Ach ja, mit den Werten -1, 0, 1 beschreibt der WR seinen Betriebszustand, Ausgeschaltet, Standby, Betrieb.
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Ich schon wieder. Heute wieder eine neue Herausforderung. Und wieder der buffer parser, der mich zur Verzweiflung bringt.
Jetzt gilt es die signed Integerwerte an den Regler zu senden. Also erst einmal wieder die Werte vom Regler in drei Modbusregister schreiben lassen.
0 = 0
1 = 1
-1 = 65535Gut die ersten beiden Zahlen soweit kein Problem. Bei der -1 geht das Gedöns wieder los. Kriege es mit dem buffer parser wieder nicht hin. Rechne ich mit der Formel von Steve und fasse die Werte aus dem Buffer Maker zusamen, kommt der Wert 65535 raus.
Klar jetzt könnte man aus der -1 einfach eine 2 machen und schon hätte man die Aufgabe elegant umgangen. Aber einfach kann jeder. Außerdem so lernt man ja nichts.
Ich bin schon wieder auf deine Antwort gespannt. Vielleicht kapiere ich es dann auch irgendwann noch mal.
Ach ja, mit den Werten -1, 0, 1 beschreibt der WR seinen Betriebszustand, Ausgeschaltet, Standby, Betrieb.
@garf Hier kann ich 2 Anmerkungen machen.
- Wenn Du bereits Integer hast, kannst Du der Parser-Node einfach ein signed Integer-Array übergeben und musst nicht über den Umweg eines Buffers gehen (mit Einzelbytes).
Siehst Du in der Hilfe zur Parser Node:
Das heißt bei signed Integer musst Du nicht über den Buffer Maker gehen. Du musst Deinen signed Integer nur in ein Array packen.
Das ist der untere Weg.
Für Dein Modbus Array - gibst Du IMMER - egal ob Du einen Buffer hast oder eine 16bint Integer-Array hast - einen unsigned 16bit Integer aus bzw. ein Array von unsigned 16bit Integers.
- Wenn Du keinen signed Integer hast, dann musst Du erst über einen Buffer gehen (hier ist es optional). Und hier (und nicht im Parser) gibst Du vor ,wie die Eingabe zu interpretieren ist.
Sprich hier gibst Du ein, dass die Eingabe als signed 16 Bit Integer ist.
Sprich Deine Modbus-Register (Array) werden IMMER mit UNISIGNED 16 Bit Integer beschrieben. Das gilt für 1 und 2.
Da der BufferParser grundsätzlich mit Int16 gefüttert werden kann, musst bei der Rückkonvertierung Du dann nur wieder angeben, wie diese unsigned Modbus Integers zu interpretieren sind.
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Zum Verständnis - wie ein Computer negative Werte abbildet. Es wird das erste Bit auf 1 (bzw das Bit 7 - du zählst ja von rechts nach links) gesetzt und dann die restlichen Bits (umgedreht).
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Eíngabe", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 400, "y": 2480, "wires": [] }, { "id": "39d7dcbddba73a69", "type": "comment", "z": "385f4b8d434f6005", "name": "int8 in bits and vice versa", "info": "", "x": 250, "y": 2320, "wires": [] }, { "id": "e1b02064d9fdd3a2", "type": "junction", "z": "385f4b8d434f6005", "x": 280, "y": 2440, "wires": [ [ "652134c61c9e5717", "21fe0484881084c7" ] ] } ]Ich hoffe ich konnte etwas zur Klarstellung beitragen.
Jeder Flow bzw. jedes Script, das ich hier poste implementiert jeder auf eigene Gefahr. Flows und Scripts können Fehler aufweisen und weder der Seitenbetreiber noch ich persönlich können hierfür haftbar gemacht werden. Das gleiche gilt für Empfehlungen aller Art.
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@garf Hier kann ich 2 Anmerkungen machen.
- Wenn Du bereits Integer hast, kannst Du der Parser-Node einfach ein signed Integer-Array übergeben und musst nicht über den Umweg eines Buffers gehen (mit Einzelbytes).
Siehst Du in der Hilfe zur Parser Node:
Das heißt bei signed Integer musst Du nicht über den Buffer Maker gehen. Du musst Deinen signed Integer nur in ein Array packen.
Das ist der untere Weg.
Für Dein Modbus Array - gibst Du IMMER - egal ob Du einen Buffer hast oder eine 16bint Integer-Array hast - einen unsigned 16bit Integer aus bzw. ein Array von unsigned 16bit Integers.
- Wenn Du keinen signed Integer hast, dann musst Du erst über einen Buffer gehen (hier ist es optional). Und hier (und nicht im Parser) gibst Du vor ,wie die Eingabe zu interpretieren ist.
Sprich hier gibst Du ein, dass die Eingabe als signed 16 Bit Integer ist.
Sprich Deine Modbus-Register (Array) werden IMMER mit UNISIGNED 16 Bit Integer beschrieben. Das gilt für 1 und 2.
Da der BufferParser grundsätzlich mit Int16 gefüttert werden kann, musst bei der Rückkonvertierung Du dann nur wieder angeben, wie diese unsigned Modbus Integers zu interpretieren sind.
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Zum Verständnis - wie ein Computer negative Werte abbildet. Es wird das erste Bit auf 1 (bzw das Bit 7 - du zählst ja von rechts nach links) gesetzt und dann die restlichen Bits (umgedreht).
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Eíngabe", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 400, "y": 2480, "wires": [] }, { "id": "39d7dcbddba73a69", "type": "comment", "z": "385f4b8d434f6005", "name": "int8 in bits and vice versa", "info": "", "x": 250, "y": 2320, "wires": [] }, { "id": "e1b02064d9fdd3a2", "type": "junction", "z": "385f4b8d434f6005", "x": 280, "y": 2440, "wires": [ [ "652134c61c9e5717", "21fe0484881084c7" ] ] } ]Ich hoffe ich konnte etwas zur Klarstellung beitragen.
@mickym sagte in Node Red Modbus:
Ich hoffe ich konnte etwas zur Klarstellung beitragen.
Ja konntest Du. Danke dafür. War wieder viel Neues dabei. Lohnt sich mit der Materie auseinander zu setzen, statt sich vorbei zu mogeln.
Danke nochmals.
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@garf Hier kann ich 2 Anmerkungen machen.
- Wenn Du bereits Integer hast, kannst Du der Parser-Node einfach ein signed Integer-Array übergeben und musst nicht über den Umweg eines Buffers gehen (mit Einzelbytes).
Siehst Du in der Hilfe zur Parser Node:
Das heißt bei signed Integer musst Du nicht über den Buffer Maker gehen. Du musst Deinen signed Integer nur in ein Array packen.
Das ist der untere Weg.
Für Dein Modbus Array - gibst Du IMMER - egal ob Du einen Buffer hast oder eine 16bint Integer-Array hast - einen unsigned 16bit Integer aus bzw. ein Array von unsigned 16bit Integers.
- Wenn Du keinen signed Integer hast, dann musst Du erst über einen Buffer gehen (hier ist es optional). Und hier (und nicht im Parser) gibst Du vor ,wie die Eingabe zu interpretieren ist.
Sprich hier gibst Du ein, dass die Eingabe als signed 16 Bit Integer ist.
Sprich Deine Modbus-Register (Array) werden IMMER mit UNISIGNED 16 Bit Integer beschrieben. Das gilt für 1 und 2.
Da der BufferParser grundsätzlich mit Int16 gefüttert werden kann, musst bei der Rückkonvertierung Du dann nur wieder angeben, wie diese unsigned Modbus Integers zu interpretieren sind.
[ { "id": "89afe07090940215", "type": "inject", "z": "385f4b8d434f6005", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "1", "payloadType": "num", "x": 190, "y": 3760, "wires": [ [ "a1295e30a331a22d" ] ] }, { "id": "6428a78309e813d1", "type": "inject", "z": "385f4b8d434f6005", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "0", "payloadType": "num", "x": 190, "y": 3800, "wires": [ [ "a1295e30a331a22d" ] ] }, { "id": "4361c6fff1762f7e", "type": "inject", "z": "385f4b8d434f6005", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "-1", "payloadType": "num", "x": 190, "y": 3840, "wires": [ [ "a1295e30a331a22d" ] ] }, { "id": "7d908abdaa064e7f", "type": "buffer-parser", "z": "385f4b8d434f6005", "name": "", "data": "payload", "dataType": "msg", "specification": "spec", "specificationType": "ui", "items": [ { "type": "uint16be", "name": "item1", "offset": 0, "length": 1, "offsetbit": 0, "scale": "1", "mask": "" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "resultType": "value", "resultTypeType": "return", "multipleResult": false, "fanOutMultipleResult": false, "setTopic": true, "outputs": 1, "x": 690, "y": 3760, "wires": [ [ "d873a81aa9cad9b5", "fda789d44003c305" ] ] }, { "id": "8d7bb8c0118236d3", "type": "debug", "z": "385f4b8d434f6005", "name": "Buffer - Bytes", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 640, "y": 3700, "wires": [] }, { "id": "d873a81aa9cad9b5", "type": "debug", "z": "385f4b8d434f6005", "name": "Modbus Array", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 900, "y": 3760, "wires": [] }, { "id": "fdca5ae4d2a60dab", "type": "buffer-maker", "z": "385f4b8d434f6005", "name": "", "specification": "spec", "specificationType": "ui", "items": [ { "name": "item1", "type": "int16be", "length": 1, "dataType": "msg", "data": "payload" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "x": 430, "y": 3760, "wires": [ [ "8d7bb8c0118236d3", "7d908abdaa064e7f" ] ] }, { "id": "abe958f5c004a703", "type": "change", "z": "385f4b8d434f6005", "name": "integer Array", "rules": [ { "t": "set", "p": "payload", "pt": "msg", "to": "[payload]", "tot": "jsonata" } ], "action": "", "property": "", "from": "", "to": "", "reg": false, "x": 410, "y": 3820, "wires": [ [ "786c6ec3bee5b1a5", "7d908abdaa064e7f" ] ] }, { "id": "786c6ec3bee5b1a5", "type": "debug", "z": "385f4b8d434f6005", "name": "Integer Array", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 650, "y": 3860, "wires": [] }, { "id": "fda789d44003c305", "type": "buffer-parser", "z": "385f4b8d434f6005", "name": "", "data": "payload", "dataType": "msg", "specification": "spec", "specificationType": "ui", "items": [ { "type": "int16be", "name": "item1", "offset": 0, "length": 1, "offsetbit": 0, "scale": "1", "mask": "" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "resultType": "value", "resultTypeType": "return", "multipleResult": true, "fanOutMultipleResult": false, "setTopic": true, "outputs": 1, "x": 890, "y": 3820, "wires": [ [ "3a36bcb61c95bba4" ] ] }, { "id": "3a36bcb61c95bba4", "type": "debug", "z": "385f4b8d434f6005", "name": "Rückkonvertierung", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 1110, "y": 3820, "wires": [] }, { "id": "a1295e30a331a22d", "type": "junction", "z": "385f4b8d434f6005", "x": 300, "y": 3800, "wires": [ [ "fdca5ae4d2a60dab", "abe958f5c004a703" ] ] } ]
Zum Verständnis - wie ein Computer negative Werte abbildet. Es wird das erste Bit auf 1 (bzw das Bit 7 - du zählst ja von rechts nach links) gesetzt und dann die restlichen Bits (umgedreht).
[ { "id": "65392663801b7347", "type": "inject", "z": "385f4b8d434f6005", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "-2", "payloadType": "num", "x": 190, "y": 2420, "wires": [ [ "e1b02064d9fdd3a2" ] ] }, { "id": "652134c61c9e5717", "type": "buffer-maker", "z": "385f4b8d434f6005", "name": "", "specification": "spec", "specificationType": "ui", "items": [ { "name": "item1", "type": "int8", "length": 1, "dataType": "msg", "data": "payload" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "x": 390, "y": 2420, "wires": [ [ "95bd1a00f43c3a41", "1f0f6998b2fe22bd" ] ] }, { "id": "95bd1a00f43c3a41", "type": "debug", "z": "385f4b8d434f6005", "name": "buffer maker", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 570, "y": 2380, "wires": [] }, { "id": "1f0f6998b2fe22bd", "type": "buffer-parser", "z": "385f4b8d434f6005", "name": "", "data": "payload", "dataType": "msg", "specification": "spec", "specificationType": "ui", "items": [ { "type": "8bit", "name": "item1", "offset": 0, "length": 1, "offsetbit": 0, "scale": "1", "mask": "" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "resultType": "value", "resultTypeType": "return", "multipleResult": false, "fanOutMultipleResult": false, "setTopic": true, "outputs": 1, "x": 570, "y": 2420, "wires": [ [ "0d6994be085f2354", "e2ed4381ba501491" ] ] }, { "id": "0d6994be085f2354", "type": "debug", "z": "385f4b8d434f6005", "name": "buffer parser", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 750, "y": 2420, "wires": [] }, { "id": "abae5fcc0b245338", "type": "inject", "z": "385f4b8d434f6005", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "-3", "payloadType": "num", "x": 190, "y": 2460, "wires": [ [ "e1b02064d9fdd3a2" ] ] }, { "id": "e2ed4381ba501491", "type": "change", "z": "385f4b8d434f6005", "name": "", "rules": [ { "t": "set", "p": "payload", "pt": "msg", "to": "[[payload[0][0].bits]]", "tot": "jsonata" } ], "action": "", "property": "", "from": "", "to": "", "reg": false, "x": 695, "y": 2480, "wires": [ [ "5574ff5ac8d119b9", "10d57305e25d5ffb" ] ], "l": false }, { "id": "10d57305e25d5ffb", "type": "debug", "z": "385f4b8d434f6005", "name": "8bit Array", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 840, "y": 2460, "wires": [] }, { "id": "5574ff5ac8d119b9", "type": "buffer-maker", "z": "385f4b8d434f6005", "name": "", "specification": "spec", "specificationType": "ui", "items": [ { "name": "item1", "type": "8bit", "length": 1, "dataType": "msg", "data": "payload" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "x": 850, "y": 2500, "wires": [ [ "a8bc2f0c740651b7", "bc288c3fca11aefa" ] ] }, { "id": "a8bc2f0c740651b7", "type": "debug", "z": "385f4b8d434f6005", "name": "buffer maker 2", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 1040, "y": 2460, "wires": [] }, { "id": "bc288c3fca11aefa", "type": "buffer-parser", "z": "385f4b8d434f6005", "name": "", "data": "payload", "dataType": "msg", "specification": "spec", "specificationType": "ui", "items": [ { "type": "int8", "name": "item1", "offset": 0, "length": 1, "offsetbit": 0, "scale": "1", "mask": "" } ], "swap1": "", "swap2": "", "swap3": "", "swap1Type": "swap", "swap2Type": "swap", "swap3Type": "swap", "msgProperty": "payload", "msgPropertyType": "str", "resultType": "value", "resultTypeType": "return", "multipleResult": true, "fanOutMultipleResult": false, "setTopic": false, "outputs": 1, "x": 1030, "y": 2500, "wires": [ [ "177efcba05d60d49" ] ] }, { "id": "177efcba05d60d49", "type": "debug", "z": "385f4b8d434f6005", "name": "buffer parser 2", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 1220, "y": 2500, "wires": [] }, { "id": "21fe0484881084c7", "type": "debug", "z": "385f4b8d434f6005", "name": "int 8 - Eíngabe", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 400, "y": 2480, "wires": [] }, { "id": "39d7dcbddba73a69", "type": "comment", "z": "385f4b8d434f6005", "name": "int8 in bits and vice versa", "info": "", "x": 250, "y": 2320, "wires": [] }, { "id": "e1b02064d9fdd3a2", "type": "junction", "z": "385f4b8d434f6005", "x": 280, "y": 2440, "wires": [ [ "652134c61c9e5717", "21fe0484881084c7" ] ] } ]Ich hoffe ich konnte etwas zur Klarstellung beitragen.
@mickym
Ich möchte aktuell den SDM630 Stromzähler auslesen. Funktioniert soweit echt gut mit dem BufferParser. Die Ausgabe mit den vielen Nachkommastellen gefallen mir jedoch so ganz und gar nicht. Leider finde ich keine Möglichkeit im BufferParser die Ausgabe direkt auf zwei Nachkommastellen zu begrenzen. Habe ich etwas übersehen, oder nicht richtig verstanden?
Die Ausgabewerte im Nachgang zu bearbeiten wäre natürlich kein Problem.Vielleicht kennst Du im Parser noch eine direkte Einstellung um die gewünschte Formatierung einzustellen.
-
@mickym
Ich möchte aktuell den SDM630 Stromzähler auslesen. Funktioniert soweit echt gut mit dem BufferParser. Die Ausgabe mit den vielen Nachkommastellen gefallen mir jedoch so ganz und gar nicht. Leider finde ich keine Möglichkeit im BufferParser die Ausgabe direkt auf zwei Nachkommastellen zu begrenzen. Habe ich etwas übersehen, oder nicht richtig verstanden?
Die Ausgabewerte im Nachgang zu bearbeiten wäre natürlich kein Problem.Vielleicht kennst Du im Parser noch eine direkte Einstellung um die gewünschte Formatierung einzustellen.
@garf Nein - bei Floats musst Du zur mathematisch korrekten Rundung die Werte im Nachgang bearbeiten. Also kenn auch keine andere Möglichkeit.
Jeder Flow bzw. jedes Script, das ich hier poste implementiert jeder auf eigene Gefahr. Flows und Scripts können Fehler aufweisen und weder der Seitenbetreiber noch ich persönlich können hierfür haftbar gemacht werden. Das gleiche gilt für Empfehlungen aller Art.
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