OPC UA 64bit Data reading problem.

[DavidwWoo]

I just testing for mutireading function /w KEPServer (node-red is running in mac /w M1 chip)

Ramp4 is getting correct value (it's 32bit data)
but Ramp5~Ramp7) get data little bit strange
AM i missing something? or set incorrectly?

I want to check my flow and guide from u!
Is bug or my mistake?

this is my testing flow

[ { "id": "b8398a925970a5fb", "type": "tab", "label": "플로우 1", "disabled": false, "info": "", "env": [] }, { "id": "2ab2468e8944774f", "type": "split", "z": "b8398a925970a5fb", "name": "", "splt": "\\n", "spltType": "str", "arraySplt": "1", "arraySpltType": "len", "stream": false, "addname": "", "x": 490, "y": 240, "wires": [ [ "7d9c88d37756f736" ] ] }, { "id": "4f5f8233500f7c47", "type": "function", "z": "b8398a925970a5fb", "name": "OPC UA Read Array (24개)", "func": "//전체 노드 Id 목록\n\nmsg.payload=[\n\n //Kepserver\n // \"ns=2;s=Simulation Examples.Functions.Ramp1;datatype=Int32\",\n // \"ns=2;s=Simulation Examples.Functions.Ramp2;datatype=Float\",\n // \"ns=2;s=Simulation Examples.Functions.Ramp3;datatype=UInt16\",\n \"ns=2;s=Simulation Examples.Functions.Ramp4;datatype=Int32\",\n \"ns=2;s=Simulation Examples.Functions.Ramp5\",\n \"ns=2;s=Simulation Examples.Functions.Ramp6\",\n \"ns=2;s=Simulation Examples.Functions.Ramp7\"\n // \"ns=2;s=Simulation Examples.Functions.Ramp8\",\n // \"ns=2;s=Simulation Examples.Functions.Random1\",\n // \"ns=2;s=Simulation Examples.Functions.Random2\",\n // \"ns=2;s=Simulation Examples.Functions.Random3\",\n // \"ns=2;s=Simulation Examples.Functions.Random4\",\n // \"ns=2;s=Simulation Examples.Functions.Random5\",\n // \"ns=2;s=Simulation Examples.Functions.Random6\",\n // \"ns=2;s=Simulation Examples.Functions.Random7\",\n // \"ns=2;s=Simulation Examples.Functions.Random8\",\n // \"ns=2;s=Simulation Examples.Functions.Sine1\",\n // \"ns=2;s=Simulation Examples.Functions.Sine2\",\n // \"ns=2;s=Simulation Examples.Functions.Sine3\",\n // \"ns=2;s=Simulation Examples.Functions.Sine4\",\n // \"ns=2;s=Simulation Examples.Functions.User1\",\n // \"ns=2;s=Simulation Examples.Functions.User2\",\n // \"ns=2;s=Simulation Examples.Functions.User3\",\n // \"ns=2;s=Simulation Examples.Functions.User4\"\n\n //prosys opcua server\n // \"ns=3;i=1007\",\n // \"ns=3;i=1001\"\n]\nreturn msg;", "outputs": 1, "timeout": "", "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 280, "y": 240, "wires": [ [ "2ab2468e8944774f" ] ] }, { "id": "9834cc89180fb8cd", "type": "inject", "z": "b8398a925970a5fb", "name": "Start", "props": [ { "p": "payload" }, { "p": "topic", "vt": "str" } ], "repeat": "", "crontab": "", "once": true, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 70, "y": 240, "wires": [ [ "4f5f8233500f7c47" ] ] }, { "id": "7d9c88d37756f736", "type": "function", "z": "b8398a925970a5fb", "name": "Change Payload to Topic", "func": "msg.topic=msg.payload\nreturn msg;", "outputs": 1, "timeout": "", "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 690, "y": 240, "wires": [ [ "5e3311ec23cbfb3d" ] ] }, { "id": "1630a058f1ee9b9c", "type": "function", "z": "b8398a925970a5fb", "name": "Read Multiple", "func": "msg.topic=\"readmultiple\"\nmsg.payload=\"ALL\"\nreturn msg;", "outputs": 1, "timeout": "", "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 400, "y": 360, "wires": [ [ "a1b75c00c2a193e1", "5e3311ec23cbfb3d" ] ] }, { "id": "a1b75c00c2a193e1", "type": "delay", "z": "b8398a925970a5fb", "name": "", "pauseType": "delayv", "timeout": "1000", "timeoutUnits": "milliseconds", "rate": "1", "nbRateUnits": "1", "rateUnits": "second", "randomFirst": "1", "randomLast": "5", "randomUnits": "seconds", "drop": false, "allowrate": false, "outputs": 1, "x": 220, "y": 360, "wires": [ [ "1630a058f1ee9b9c" ] ] }, { "id": "3a823777413fb4fe", "type": "inject", "z": "b8398a925970a5fb", "name": "Start", "props": [], "repeat": "", "crontab": "", "once": true, "onceDelay": 0.1, "topic": "", "x": 70, "y": 340, "wires": [ [ "a1b75c00c2a193e1" ] ] }, { "id": "cdccab90eb9df7d1", "type": "function", "z": "b8398a925970a5fb", "name": "Structure Change", "func": "/*\n{\n [nodeid]:\n {\n value: var\n //dataType: string\n statusCode: string\n timestamp: string (date)\n }\n}\n*/\n// Map OPC UA data type integer value to string description\nvar dataTypes = {\n \"1\": \"Boolean\",\n \"2\": \"SByte\",\n \"3\": \"Byte\",\n \"4\": \"Int16\",\n \"5\": \"UInt16\",\n \"6\": \"Int32\",\n \"7\": \"UInt32\",\n \"8\": \"Int64\",\n \"9\": \"UInt64\",\n \"10\": \"Float\",\n \"11\": \"Double\",\n \"12\": \"String\",\n \"13\": \"DateTime\",\n \"14\": \"Guid\",\n \"15\": \"ByteString\",\n \"16\": \"XmlElement\",\n \"17\": \"NodeId\",\n \"18\": \"ExpandedNodeId\",\n \"19\": \"StatusCode\",\n \"20\": \"QualifiedName\",\n \"21\": \"LocalizedText\",\n \"22\": \"ExtensionObject\",\n \"23\": \"DataValue\",\n \"24\": \"Variant\",\n \"25\": \"DiagnosticInfo\",\n}\nvar nodeId, value, dataType, statusCode, timestamp\nvar data={}\nfor(var i=0;i<msg.payload.length;i++){\n nodeId = msg.items[i].nodeId.value\n value = msg.payload[i].value.value.toString()\n dataType=dataTypes[msg.payload[i].value.dataType.toString()]\n statusCode = msg.payload[i].statusCode._name\n //timestamp = new Date()\n timestamp = new Date(msg.payload[i].sourceTimestamp)\n timestamp.setHours(timestamp.getHours() + timestamp.getTimezoneOffset() / (-60));\n timestamp = timestamp.toISOString().replace('T', ' ').substring(0, 23)\n data[nodeId]=\n {\n \"timestamp\": timestamp,\n \"nodeId\": nodeId,\n \"value\": value,\n \"dataType\": dataType,\n \"statusCode\": statusCode\n }\n}\nmsg.payload=data\nreturn msg;", "outputs": 1, "timeout": "", "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 830, "y": 340, "wires": [ [ "14213404f36cea7b" ] ] }, { "id": "14213404f36cea7b", "type": "function", "z": "b8398a925970a5fb", "name": "Process Name", "func": "msg.message=\"Node-RED: OPC UA Data Structue Change Complete\"\nreturn msg;", "outputs": 1, "timeout": "", "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1080, "y": 380, "wires": [ [ "63209d21fd7333a2" ] ] }, { "id": "63209d21fd7333a2", "type": "debug", "z": "b8398a925970a5fb", "name": "debug 1", "active": false, "tosidebar": true, "console": false, "tostatus": false, "complete": "false", "statusVal": "", "statusType": "auto", "x": 820, "y": 500, "wires": [] }, { "id": "5e3311ec23cbfb3d", "type": "OpcUa-Client", "z": "b8398a925970a5fb", "endpoint": "85c4164544a8a87a", "action": "readmultiple", "deadbandtype": "a", "deadbandvalue": 1, "time": 10, "timeUnit": "s", "certificate": "n", "localfile": "", "localkeyfile": "", "securitymode": "None", "securitypolicy": "None", "useTransport": false, "maxChunkCount": 1, "maxMessageSize": 8192, "receiveBufferSize": 8192, "sendBufferSize": 8192, "setstatusandtime": false, "keepsessionalive": false, "name": "", "x": 620, "y": 380, "wires": [ [ "cdccab90eb9df7d1" ], [], [] ] }, { "id": "85c4164544a8a87a", "type": "OpcUa-Endpoint", "endpoint": "opc.tcp://192.168.11.14:49320", "secpol": "None", "secmode": "None", "none": true, "login": false, "usercert": false, "usercertificate": "", "userprivatekey": "" } ]

[mikakaraila]

As JavaScript does not support 64bit values it is divided into two bytes as you see in payload.

[mikakaraila]

You can try to convert two bytes into 32bit as long as it does not overflow solution would work.

[mikakaraila]

You can combine two bytes and use these:
There are a few JS libraries around that can handle larger numbers, e.g., BigNumber and Int64.

As there only a few cases that really needs 64bit numbers, sorry.