I am working with the Node-RED OPCUA library and h...
# umh-supporta
andyott33
04/02/2023, 1:32 PMI am working with the Node-RED OPCUA library and having a hard time getting the client to connect. I am researching the Node-RED forums to see what I can find
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DanielH
04/02/2023, 1:38 PMwe split this to a tread instead..
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andyott33
04/02/2023, 1:38 PMThanks
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DanielH
04/02/2023, 1:38 PMdo you get a connection to the opc in node-red ?
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andyott33
04/02/2023, 1:39 PMNo, I get a client node error
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[31mClient node error on: error: ["Cannot create client, check connection options: [{\"securityPolicy\":\"1\",\"securityMode\":3,\"clientCertificateManager\":\"2\",\"certificateFile\":\"3\",\"privateKeyFile\":\"4\",\"requestedSessionTimeout\":300000,\"clientName\":\"4\",\"endpointMustExist\":false,\"defaultSecureTokenLifetime\":200000,\"connectionStrategy\":\"5\",\"keepSessionAlive\":true},\"http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256\",{\"untrustUnknownCertificate\":true,\"state\":2,\"folderPoolingInterval\":5000,\"_watchers\":\"6\",\"_readCertificatesCalled\":true,\"_filenameToHash\":\"7\",\"_thumbs\":\"8\",\"_pending_crl_to_process\":0,\"queue\":\"9\",\"location\":\"10\",\"keySize\":2048,\"referenceCounter\":0,\"automaticallyAcceptUnknownCertificate\":true},\"NodeOPCUA-Client@d7e82f8da5cc[f6b532fe2815756f979be4222725f7f2c0db7bdf].pem\",\"\",{\"maxRetry\":10512000,\"initialDelay\":5000,\"maxDelay\":30000},[\"11\",\"12\",\"13\",\"14\",\"15\"],{\"/usr/src/node-red/.conf...d
DanielH
04/02/2023, 1:40 PMwhat kind of security do you use?
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andyott33
04/02/2023, 1:41 PMWith UA Expert the certificate showed up in the Quarantine section of Codesys Security and I moved it to trusted. I was thinking the same should happen with Node-RED.
I am using Basic256Sha256
andyott33
04/02/2023, 1:45 PMI just copied the folder path that was in that error into the Client Node and have different errors now:
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DanielH
04/02/2023, 1:46 PMtry remove the folder path and see if you get errors
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andyott33
04/02/2023, 1:47 PMI get that same message:
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DanielH
04/02/2023, 1:47 PMoh, but the endpoint is pointing to localhost, is that where you run the opc-ua server ?
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andyott33
04/02/2023, 1:48 PMThis could be an issue but I have codesys Linux running on Linux server and node-red in a docker container on the same Linux server
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DanielH
04/02/2023, 1:49 PMyes, but localhost will point to the pod and not the host
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andyott33
04/02/2023, 1:54 PMokay, I see. I will need to configure the Docker Container to have access to the host or create a new VM for docker?
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DanielH
04/02/2023, 1:59 PMit should work if you point the node-red-opcua to the ip-adress for your opc-ua server
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andyott33
04/02/2023, 2:01 PMOkay, I will do some more testing. Heading out with the family for the day and will test in the afternoon. Thanks for your help @DanielH
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DanielH
04/02/2023, 2:01 PMsure. no problem..
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andyott33
04/02/2023, 2:12 PMThe other method I was testing out was using the MQTT functions in Codesys. That has been working somewhat well for me. Just figuring out the best way to subscribe to multiple topics. Trying two paths hopping to get some good results with one of them.
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DanielH
04/02/2023, 2:19 PMBoth methods should work. Using OPC-UA is a bit more industry standard for pushing data in to PLCs..
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andyott33
04/02/2023, 2:21 PMSounds good. I’ll keep working on the Node-RED method. I’ll let you know how my further testing goes
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DanielH
04/02/2023, 2:25 PM👍
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andyott33
04/02/2023, 6:39 PMIt's working
andyott33
04/02/2023, 6:44 PMI set the IP Address in the endpoint and pasted the PKI folder path then checked my Codesys Security and saw the NodeOPCUA certificate in the quarantine folder. I guess rebooting it and changing the IP address worked.
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DanielH
04/03/2023, 6:05 AMah.. nice.. so the ip you have now is it the host-ip or is it a pod-ip ?
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Jermuk
04/03/2023, 9:54 AMlooping in @alexkrueger and @krgrsebastian as we had that node-red error previously, but were not able to fix it. our solution was to use then our benthos-umh docker container.
Jermuk
04/03/2023, 9:54 AMwhat did you do exactly to fix the problem?
Jermuk
04/03/2023, 9:55 AMjust changed the IP address and rebooted?
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andyott33
04/03/2023, 12:18 PMI also added the PKI Certificate folder path that was displayed in the error. See highlighted field in image above.
andyott33
04/03/2023, 12:30 PMBelow is an image with folder path highlighted in the error message:
andyott33
04/03/2023, 12:30 PMHost IP
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Jermuk
04/03/2023, 12:49 PMintersting, we'll try it out the next time we encounter it. thank you!
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andyott33
04/03/2023, 2:10 PMWere you trying to connect to a Codesys PLC as well? Or Siemens?
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Jermuk
04/03/2023, 2:28 PM@alexkrueger do you know which PLC you used?
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DanielH
04/03/2023, 2:36 PMWe have a siemens connected with no problems... i have a codesys at home i could try to replicate the error with.
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andyott33
04/04/2023, 3:51 PMSounds good. Let me know how that goes
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