Use OpcUa-Method with structure input parameter

[paolopiccioli]

I'm not able to call ScanStart on SIMATIC RF186C because it seems thee is no ExtensionObject definition for nodeId ns=4;i=6033.

I receive message "Invalid NodeId: Error: Cannot find StructureType constructor for dataType ns=4;i=6033"

Using UAExpert it seems there is no definition DataTypes - > Structures with same nodeId. How can I call the method? Is there other way to pass ExtensionObject to OpcUa-Method ?

This is my node: [ { "id": "5a4465fa4c13e04c", "type": "OpcUa-Method", "z": "1fa0b22.ea7114e", "endpoint": "9a55d881d5820552", "objectId": "ns=4;i=5002", "methodId": "ns=4;i=7009", "name": "ReadTagMetod", "inputArguments": [], "outputArguments": [], "arg0name": "", "arg0type": "ExtensionObject", "arg0typeid": "ns=4;i=6033", "arg0value": "{\"Identifier\":1,\"CodeType\":\"RAW:BYTES\",\"Region\":3,\"Offset\":0,\"Length\":100,\"Password\":\"\"}", "arg1name": "", "arg1type": "", "arg1typeid": "", "arg1value": "", "arg2name": "", "arg2type": "", "arg2typeid": "", "arg2value": "", "out0name": "", "out0type": "", "out0typeid": "", "out0value": "", "x": 600, "y": 300, "wires": [ [ "075c049cee9e98c1" ] ] }, { "id": "9a55d881d5820552", "type": "OpcUa-Endpoint", "endpoint": "opc.tcp://192.168.1.4:4840", "secpol": "None", "secmode": "None", "none": false, "login": false, "usercert": false, "usercertificate": "", "userprivatekey": "" } ]

[mikakaraila]

This example shows how I retrieve extension object: RF360R.txt

I hope this will help in your case.

[paolopiccioli]

Thank you for your help. But I don't understand how I have to modify my node. In the example I can't find OpcUa-Metod node as in the attached picture. If I try to specify ns=4;i=6033 on TypeId I have the error "Invalid NodeId: Error: Cannot find StructureType constructor for dataType ns=4;i=6033". If I leave blank I receive the error "Invalid NodeId: TypeError: Cannot convert undefined or null to object".

Thank you again.

[mikakaraila]

Look second tab, I don´t have now RFID scanner at home. But in principle you should test your nodeId / Extension Object.

This illustrates principle how you can build extension object with client node or manually write needed JSON object with function node.

And function node can handle input that contains msg with input parameters for the method node.

[mikakaraila]

This way:

[paolopiccioli]

Thank you. This is the data that I have to "inject" but after what I have to put in OpcUa Method Node ? Or I don't have to use the OpcUa Method Node but a different Node?

[paolopiccioli]

For better understand I checked with WireShark and I saw that the CallRequest is not executed (as for UAExpert) and when I inject message I receive the error:

"Execute method result, error:The client did not specify all of the input arguments for the method."

Those are my Nodes

[ { "id": "7ec0f293ad070ca0", "type": "inject", "z": "1fa0b22.ea7114e", "name": "Inject", "props": [ { "p": "payload" }, { "p": "inputArguments", "v": "{\"Identifier\":0,\"CodeType\":0,\"Region\":3,\"Offset\":0,\"Lenght\":100,\"Password\":\"\"}", "vt": "json" }, { "p": "objectId", "v": "ns=4;i=5002", "vt": "str" }, { "p": "methodId", "v": "ns=4;i=7009", "vt": "str" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 390, "y": 300, "wires": [ [ "7b6ff66a8bb0f95c", "e59e3dd049753841" ] ] }, { "id": "7b6ff66a8bb0f95c", "type": "OpcUa-Method", "z": "1fa0b22.ea7114e", "endpoint": "9a55d881d5820552", "objectId": "", "methodId": "", "name": "ReadMethod", "inputArguments": [], "outputArguments": [], "arg0name": "", "arg0type": "", "arg0typeid": "", "arg0value": "", "arg1name": "", "arg1type": "", "arg1typeid": "", "arg1value": "", "arg2name": "", "arg2type": "", "arg2typeid": "", "arg2value": "", "out0name": "TagRead", "out0type": "", "out0typeid": "", "out0value": "", "x": 590, "y": 360, "wires": [ [ "075c049cee9e98c1" ] ] }, { "id": "075c049cee9e98c1", "type": "debug", "z": "1fa0b22.ea7114e", "name": "", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "false", "statusVal": "", "statusType": "auto", "x": 790, "y": 360, "wires": [] }, { "id": "9a55d881d5820552", "type": "OpcUa-Endpoint", "endpoint": "opc.tcp://192.168.1.4:4840", "secpol": "None", "secmode": "None", "none": false, "login": false, "usercert": false, "usercertificate": "", "userprivatekey": "" } ]

Is the error related to the data that I inject to the UpcUa_Method node or the node before execute the CallRequest can send an other request to verify if parameters for request are valid?

Thank you again.

[paolopiccioli]

Sorry but I wrongly mark as solved. I add also image of Wireshark working CallMethodRequest where I saw that first element of parameters array should be ExtensionObject.

[paolopiccioli]

Hello again, is there an example how to use UpcUa Method to execute correctly the ReadTag ?

I know that first two parameters are Object. For the first, following the examples, I can build and I pass as first parameter in the call, but I can't use the same way for the second because it seems is not defined. It is CodeTypeDataType derived from String.

I really cant understand where can be the problem of the error in the Method call. Do I have to "Build" first two parameters or I can define manually by code to pass to the method Node?

This is my flow [ { "id": "075c049cee9e98c1", "type": "debug", "z": "1fa0b22.ea7114e", "name": "", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "false", "statusVal": "", "statusType": "auto", "x": 790, "y": 300, "wires": [] }, { "id": "7b6ff66a8bb0f95c", "type": "OpcUa-Method", "z": "1fa0b22.ea7114e", "endpoint": "9a55d881d5820552", "objectId": "", "methodId": "", "name": "ReadMethod", "inputArguments": [], "outputArguments": [], "arg0name": "", "arg0type": "String", "arg0typeid": "", "arg0value": "msg.paramArray", "arg1name": "", "arg1type": "", "arg1typeid": "", "arg1value": "", "arg2name": "", "arg2type": "", "arg2typeid": "", "arg2value": "", "out0name": "TagRead", "out0type": "", "out0typeid": "", "out0value": "", "x": 510, "y": 280, "wires": [ [ "075c049cee9e98c1" ] ] }, { "id": "9c5ae7c6c7190a72", "type": "OpcUa-Item", "z": "1fa0b22.ea7114e", "item": "ns=3;i=3020", "datatype": "Extension Object", "value": "", "name": "ExtensionObject", "x": 320, "y": 200, "wires": [ [ "6bd33ea1d1ba1b1b" ] ] }, { "id": "98cd5ccf34bcf2cc", "type": "inject", "z": "1fa0b22.ea7114e", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "str", "x": 130, "y": 200, "wires": [ [ "9c5ae7c6c7190a72" ] ] }, { "id": "f7992cc8d8c2b5ba", "type": "function", "z": "1fa0b22.ea7114e", "name": "", "func": "var paramArray = [];\nparamArray.push(msg.parameter1);\nparamArray.push(0);\nparamArray.push(3);\nparamArray.push(0);\nparamArray.push(100);\nparamArray.push(\"\");\n\nmsg.inputArguments = paramArray;\nmsg.objectId = \"ns=4;i=5002\";\nmsg.methodId = \"ns=4;i=7009\";\n\nreturn msg;", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 140, "y": 260, "wires": [ [ "0f549f5ba4f8ad80", "7b6ff66a8bb0f95c" ] ] }, { "id": "6bd33ea1d1ba1b1b", "type": "OpcUa-Client", "z": "1fa0b22.ea7114e", "endpoint": "9a55d881d5820552", "action": "build", "deadbandtype": "a", "deadbandvalue": 1, "time": 10, "timeUnit": "s", "certificate": "n", "localfile": "", "localkeyfile": "", "securitymode": "None", "securitypolicy": "None", "folderName4PKI": "", "useTransport": false, "maxChunkCount": "", "maxMessageSize": "", "receiveBufferSize": "", "sendBufferSize": "", "name": "BuildExtensionObject", "x": 540, "y": 200, "wires": [ [ "10e60394c4e0aacd" ] ] }, { "id": "10e60394c4e0aacd", "type": "json", "z": "1fa0b22.ea7114e", "name": "Convert", "property": "payload", "action": "obj", "pretty": false, "x": 760, "y": 180, "wires": [ [ "1db0f102e95dca7e" ] ] }, { "id": "1db0f102e95dca7e", "type": "function", "z": "1fa0b22.ea7114e", "name": "SetPar", "func": "//msg.payload.switchField = 0x00000000;\nmsg.parameter1 = msg.payload;\nreturn msg;", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 770, "y": 220, "wires": [ [ "f7992cc8d8c2b5ba" ] ] }, { "id": "0f549f5ba4f8ad80", "type": "debug", "z": "1fa0b22.ea7114e", "name": "", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "true", "targetType": "full", "statusVal": "", "statusType": "auto", "x": 310, "y": 320, "wires": [] }, { "id": "9a55d881d5820552", "type": "OpcUa-Endpoint", "endpoint": "opc.tcp://192.168.1.4:4840", "secpol": "None", "secmode": "None", "none": false, "login": false, "usercert": false, "usercertificate": "", "userprivatekey": "" } ]

I attach also the NoedRed screen with debug messages and also the page with parameter description of the RF186C.

Is there anyone that can help me or I have to follow an other way to communicate with RF186C ?

Thank you in advance.

[paolopiccioli]

After some tests, I finally understand that the wrong parameter is the first. I saw in wireshark that in CallResponse message it is marked as [BadTypeMismatch]. I saw also that in the CallRequest the parameter has Variant Type : Null (0x00). What I'm wrong? How can I pass the first parameter?

This are my Nodes: [ { "id": "98cd5ccf34bcf2cc", "type": "inject", "z": "1fa0b22.ea7114e", "name": "", "props": [ { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "str", "x": 130, "y": 200, "wires": [ [ "9c5ae7c6c7190a72" ] ] }, { "id": "9c5ae7c6c7190a72", "type": "OpcUa-Item", "z": "1fa0b22.ea7114e", "item": "ns=3;i=3020", "datatype": "Extension Object", "value": "", "name": "ExtensionObject", "x": 320, "y": 200, "wires": [ [ "6bd33ea1d1ba1b1b" ] ] }, { "id": "6bd33ea1d1ba1b1b", "type": "OpcUa-Client", "z": "1fa0b22.ea7114e", "endpoint": "9a55d881d5820552", "action": "build", "deadbandtype": "a", "deadbandvalue": 1, "time": 10, "timeUnit": "s", "certificate": "n", "localfile": "", "localkeyfile": "", "securitymode": "None", "securitypolicy": "None", "folderName4PKI": "", "useTransport": false, "maxChunkCount": "", "maxMessageSize": "", "receiveBufferSize": "", "sendBufferSize": "", "name": "BuildExtensionObject", "x": 540, "y": 200, "wires": [ [ "1c8e177e67708197", "10e60394c4e0aacd" ] ] }, { "id": "10e60394c4e0aacd", "type": "json", "z": "1fa0b22.ea7114e", "name": "Convert", "property": "payload", "action": "obj", "pretty": false, "x": 760, "y": 180, "wires": [ [ "1db0f102e95dca7e" ] ] }, { "id": "1db0f102e95dca7e", "type": "function", "z": "1fa0b22.ea7114e", "name": "SetPar", "func": "//msg.payload.switchField = 0x00000000;\nmsg.parameter1 = msg.payload;\nreturn msg;", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 770, "y": 220, "wires": [ [ "7a069ae54a3d2c83", "f7992cc8d8c2b5ba" ] ] }, { "id": "f7992cc8d8c2b5ba", "type": "function", "z": "1fa0b22.ea7114e", "name": "", "func": "var paramArray = [];\n\n/*\nparamArray.push({ dataType: \"ScanData\", value: 0 });\nparamArray.push({ dataType: \"CodeTypeDataType\", value: \"RAW:BYTES\" });\n\nparamArray.push({ dataType: \"UInt16\", value: 3 });\nparamArray.push({ dataType: \"UInt16\", value: 0 });\nparamArray.push({ dataType: \"UInt32\", value: 100 });\nparamArray.push({ dataType: \"ByteString\", value: \"\" });\n*/\n\nparamArray.push( msg.parameter1);\nparamArray.push({ dataType: \"String\", value:\"1\" });\nparamArray.push({ dataType: \"UInt16\", value: 3 });\nparamArray.push({ dataType: \"UInt32\", value: 0 });\nparamArray.push({ dataType: \"UInt32\", value: 100 });\nparamArray.push({ dataType: \"ByteString\", value: \"\" });\n\nmsg.inputArguments = paramArray;\nmsg.objectId = \"ns=4;i=5002\";\nmsg.methodId = \"ns=4;i=7009\";\n\nreturn msg;", "outputs": 1, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 140, "y": 260, "wires": [ [ "0f549f5ba4f8ad80", "67428ff7bec2ee64" ] ] }, { "id": "67428ff7bec2ee64", "type": "OpcUa-Client", "z": "1fa0b22.ea7114e", "endpoint": "9a55d881d5820552", "action": "method", "deadbandtype": "a", "deadbandvalue": 1, "time": 10, "timeUnit": "s", "certificate": "n", "localfile": "", "localkeyfile": "", "securitymode": "None", "securitypolicy": "None", "folderName4PKI": "", "useTransport": false, "maxChunkCount": 1, "maxMessageSize": 8192, "receiveBufferSize": 8192, "sendBufferSize": 8192, "name": "", "x": 540, "y": 340, "wires": [ [ "075c049cee9e98c1" ] ] }, { "id": "075c049cee9e98c1", "type": "debug", "z": "1fa0b22.ea7114e", "name": "", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "false", "statusVal": "", "statusType": "auto", "x": 790, "y": 280, "wires": [] }, { "id": "9a55d881d5820552", "type": "OpcUa-Endpoint", "endpoint": "opc.tcp://192.168.1.4:4840", "secpol": "None", "secmode": "None", "none": false, "login": false, "usercert": false, "usercertificate": "", "userprivatekey": "" } ]

Thank you.