Hello
As a lot of others topic, I hope I will get my answer here 
I would like to read data from a plc. I tried with the node 'Read' but it need an OpcUa-Client for each variable I want to read, and my plc is limited at 15 sessions so... not good anymore...
So I have found that I could use 'Read multiple' and then I could use a function or a commuter to split 3 variables that I putted in my 'Read multiple'
the version 1 is working properly but in the limit of X sessions
And here the V2 with a Read multiple that is reading in entrance but not splitting in ouput !
I can see my 3 variables being read via OpcUaClient but I cant split them in 3 after.... I tried with a function that will look for the msg.topic and then separate it in 3 output but I have in output a msg.topic : undefined
So..... I try with a switch and in my switch, I look if msg.topic got 'In_Counter' or 'out_Counter' or 'Status'. it is supposed to be very simple in my head but it is very diffcult to find a working solution on the internet.
I tried a lot of different things in function or switch node, but nothing works ! I will give a tip via Paypal to the person that has the working solution 
code :
[
{
"id": "d85dd4e7.e244b",
"type": "tab",
"label": "read_multiple",
"disabled": false,
"info": ""
},
{
"id": "ed421a9.d6319e8",
"type": "OpcUa-Client",
"z": "d85dd4e7.e244b",
"endpoint": "dd0eae807bd57326",
"action": "readmultiple",
"deadbandtype": "a",
"deadbandvalue": 1,
"time": 10,
"timeUnit": "s",
"certificate": "n",
"localfile": "",
"localkeyfile": "",
"folderName4PKI": "",
"useTransport": false,
"maxChunkCount": "",
"maxMessageSize": "",
"receiveBufferSize": "",
"sendBufferSize": "",
"name": "Automate L10",
"x": 640,
"y": 220,
"wires": [
[
"2421fd9c16519628",
"f993fd12.db5e98",
"d7e4749671b4c569",
"3e33934d3307dbda"
]
]
},
{
"id": "2c050a3d.91f496",
"type": "inject",
"z": "d85dd4e7.e244b",
"name": "Read multiple items",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": "1",
"topic": "readmultiple",
"payload": "",
"payloadType": "str",
"x": 340,
"y": 80,
"wires": [
[
"ed421a9.d6319e8"
]
]
},
{
"id": "690e4f9f.faeca",
"type": "inject",
"z": "d85dd4e7.e244b",
"name": "Clear nodeId array",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "clearitems",
"payload": "",
"payloadType": "str",
"x": 350,
"y": 120,
"wires": [
[
"ed421a9.d6319e8"
]
]
},
{
"id": "b71fa7364ff1958f",
"type": "OpcUa-Item",
"z": "d85dd4e7.e244b",
"item": "ns=3;s=\"570PR10\".\"SCROLL\".\"2_Out_Counter_1\"",
"datatype": "Int32",
"value": "",
"name": "MACHINE 1 COMPTEUR OUT",
"x": 330,
"y": 220,
"wires": [
[
"ed421a9.d6319e8"
]
]
},
{
"id": "2e63235fd8f881ad",
"type": "OpcUa-Item",
"z": "d85dd4e7.e244b",
"item": "ns=3;s=\"570PR10\".\"SCROLL\".\"1_IN_Counter_1\"",
"datatype": "Int32",
"value": "",
"name": "MACHINE 1 COMPTEUR IN",
"x": 340,
"y": 180,
"wires": [
[
"ed421a9.d6319e8"
]
]
},
{
"id": "dd2605ecf1540a19",
"type": "OpcUa-Item",
"z": "d85dd4e7.e244b",
"item": "ns=3;s=\"570PR10\".\"SCROLL\".\"3_STATE\"",
"datatype": "Int16",
"value": "",
"name": "MACHINE 1 STATUS",
"x": 360,
"y": 260,
"wires": [
[
"ed421a9.d6319e8"
]
]
},
{
"id": "ed3864b67fc24355",
"type": "inject",
"z": "d85dd4e7.e244b",
"name": "Add item",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": 0.1,
"topic": "Scroll_Cpt_in1",
"payload": "",
"payloadType": "str",
"x": 120,
"y": 180,
"wires": [
[
"2e63235fd8f881ad"
]
]
},
{
"id": "c6127a988e62fe8e",
"type": "inject",
"z": "d85dd4e7.e244b",
"name": "Add item",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": 0.1,
"topic": "Scroll_Cpt_out1",
"payload": "",
"payloadType": "str",
"x": 120,
"y": 220,
"wires": [
[
"b71fa7364ff1958f"
]
]
},
{
"id": "20ba81a2288b98fd",
"type": "inject",
"z": "d85dd4e7.e244b",
"name": "Add item",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": 0.1,
"topic": "Scroll_status",
"payload": "",
"payloadType": "str",
"x": 120,
"y": 260,
"wires": [
[
"dd2605ecf1540a19"
]
]
},
{
"id": "2421fd9c16519628",
"type": "function",
"z": "d85dd4e7.e244b",
"name": "function 11",
"func": "var msg1={};\nvar msg2={};\nvar msg3={};\n\nvar topic = msg.topic;\nvar payload = msg.payload;\nvar msgid = msg._msgid;\n\nif (topic == \"ns=3;s=570PR10.SCROLL.1_IN_Counter_1\") {\n msg1.payload = payload;\n msg1.topic = topic;\n msg1._msgid = msgid;\n}\n\nif (topic == \"ns=3;s=570PR10.SCROLL.2_OUT_Counter_1\") \n{ \n msg2.payload = payload;\n msg2.topic = topic;\n msg2._msgid = msgid;\n}\n\nif (topic == \"ns=3;s=570PR10.SCROLL.3_STATE\") \n{\n msg3.payload = payload;\n msg3.topic = topic;\n msg3._msgid = msgid;\n}\n\nreturn [msg1,msg2,msg3];",
"outputs": 3,
"timeout": 0,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 950,
"y": 220,
"wires": [
[
"42531b6b5c221518",
"716f4370cd731f2f"
],
[
"68b60247e9835922",
"fd343c19f2876a1c"
],
[
"14860ad822a61216",
"6ba368b395d3950b"
]
]
},
{
"id": "3e33934d3307dbda",
"type": "switch",
"z": "d85dd4e7.e244b",
"name": "",
"property": "responseTopic",
"propertyType": "msg",
"rules": [
{
"t": "cont",
"v": "1_IN",
"vt": "flow"
},
{
"t": "cont",
"v": "2_Out",
"vt": "flow"
},
{
"t": "cont",
"v": "3_STATE",
"vt": "flow"
}
],
"checkall": "true",
"repair": true,
"outputs": 3,
"x": 940,
"y": 620,
"wires": [
[],
[],
[]
]
},
{
"id": "f993fd12.db5e98",
"type": "debug",
"z": "d85dd4e7.e244b",
"name": "entrée Topic",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "topic",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 950,
"y": 80,
"wires": []
},
{
"id": "d7e4749671b4c569",
"type": "debug",
"z": "d85dd4e7.e244b",
"name": "entree_payload",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 960,
"y": 120,
"wires": []
},
{
"id": "716f4370cd731f2f",
"type": "ui_gauge",
"z": "d85dd4e7.e244b",
"name": "",
"group": "9be63bcf027d9dce",
"order": 4,
"width": 0,
"height": 0,
"gtype": "gage",
"title": "Compteur Entrée",
"label": "units",
"format": "{{value}}",
"min": 0,
"max": "4500",
"colors": [
"#00b500",
"#e6e600",
"#ca3838"
],
"seg1": "",
"seg2": "",
"x": 1250,
"y": 260,
"wires": []
},
{
"id": "68b60247e9835922",
"type": "ui_gauge",
"z": "d85dd4e7.e244b",
"name": "",
"group": "9be63bcf027d9dce",
"order": 4,
"width": 0,
"height": 0,
"gtype": "gage",
"title": "Compteur Sortie",
"label": "units",
"format": "{{value}}",
"min": 0,
"max": "4500",
"colors": [
"#00b500",
"#e6e600",
"#ca3838"
],
"seg1": "",
"seg2": "",
"x": 1240,
"y": 360,
"wires": []
},
{
"id": "42531b6b5c221518",
"type": "debug",
"z": "d85dd4e7.e244b",
"name": "Sortie TT 1",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "topic",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 1230,
"y": 220,
"wires": []
},
{
"id": "fd343c19f2876a1c",
"type": "debug",
"z": "d85dd4e7.e244b",
"name": "Sortie TT 2",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "topic",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 1230,
"y": 400,
"wires": []
},
{
"id": "14860ad822a61216",
"type": "function",
"z": "d85dd4e7.e244b",
"name": "function 10",
"func": "var payload = msg.payload;\nif (payload == \"0\") {\n msg.payload = \"UNKNOWN\";\n} else if (payload == \"1\") {\n msg.payload = \"RUNNING\";\n} else if (payload == \"2\") {\n msg.payload = \"Slow Down\";\n} else if (payload == \"3\") {\n msg.payload = \"Waiting \";\n} else if (payload == \"4\") {\n msg.payload = \"Block : Saturation\";\n \n} else if (payload == \"5\") {\n msg.payload = \"mACHINE REASON CODE \";\n\n\n msg.payload = String(payload);\n}\n\nreturn msg;",
"outputs": 1,
"timeout": 0,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 1230,
"y": 500,
"wires": [
[
"7502e8207a815ab4"
]
]
},
{
"id": "7502e8207a815ab4",
"type": "ui_text",
"z": "d85dd4e7.e244b",
"group": "48d21401497a0d52",
"order": 1,
"width": 0,
"height": 0,
"name": "",
"label": "Status",
"format": "{{msg.payload}}",
"layout": "row-spread",
"x": 1390,
"y": 500,
"wires": []
},
{
"id": "6ba368b395d3950b",
"type": "debug",
"z": "d85dd4e7.e244b",
"name": "Sortie TT 3",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "topic",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 1230,
"y": 540,
"wires": []
},
{
"id": "dd0eae807bd57326",
"type": "OpcUa-Endpoint",
"endpoint": "opc.tcp://5.123.12.127:4840",
"secpol": "None",
"secmode": "None",
"none": false,
"login": false,
"usercert": false,
"usercertificate": "",
"userprivatekey": ""
},
{
"id": "9be63bcf027d9dce",
"type": "ui_group",
"name": "Compteurs",
"tab": "766c1938589028f0",
"order": 1,
"disp": true,
"width": "6",
"collapse": false
},
{
"id": "48d21401497a0d52",
"type": "ui_group",
"name": "Etat Scroll",
"tab": "766c1938589028f0",
"order": 2,
"disp": true,
"width": "6",
"collapse": false
},
{
"id": "766c1938589028f0",
"type": "ui_tab",
"name": "SCROLL",
"icon": "dashboard",
"order": 2,
"disabled": false,
"hidden": false
}
]```
