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For test the connection from the Simatic IoT2040 to the OPC UA Server.

Created by: Phuong2871998 at: 8/14/2020 10:28 AM (4 Replies)

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8/14/2020 10:28 AM	Rate (0)
Phuong2871998 Posts: 1 Rating: (0)	I'm testing the connection the Simatic IoT2040 to the OPC UA Server (S7-1214C DC/DC/DC firmware 4.4) I have a problem. How to fix the error? Error: cannot locate certificate file /home/root/OPCUA_Azure/node_modules/node- opcua/certificates/client_selfsigned_cert_1024.pem Thanks All. Attachment Annotation 2020-08-14 152810.png (724 Downloads)
Phuong2871998 Posts: 1 Rating: (0)	Last edited by: Phuong2871998 at: 08/14/2020 10:30:48
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8/17/2020 7:49 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 1/15/2026 Posts: 3345 Rating: (382)	Hi, which OPC UA Client are you using in your script? Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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12/11/2020 11:26 AM	Rate (0)
ThomTronix Posts: 3 Rating: (0)	I have a similar problem. I get also the same error: cannot locate certificate file .../certificates/client_selfsigned_cert_1024.pem Via node-red I was able to establish a connection with my Siemens S7 PLC through OPC UA, but if I try to establish the connection by using document "SIMATIC IOT2000 Connection to Microsoft Azure Cloud" I still keep getting the error "cannot locate certificate file". I could find another certificate file, client_selfsigned_cert_2048.pem, but not the "1024" variant. Any idea where I can find (or generate) the client_selfsigned_cert_1024.pem?
ThomTronix Posts: 3 Rating: (0)
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12/14/2020 1:01 PM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 1/15/2026 Posts: 3345 Rating: (382)	Hi, in the original post of this example in post 4 a user had the same poblem. Can you try to copy the certificates of the node-red node to the directory in your error? I think you can find them here: /usr/lib/node_modules/node-red-contrib-opcua/node_modules/node-opcua-client/certificates Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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This contribution was helpful to 1 thankful Users ThomTronix

2/8/2021 9:27 PM	Rate (0)
ThomTronix Posts: 3 Rating: (0)	Sorry for the delay in reply, but after copying the certification files, it was working! Thanks for your help!
ThomTronix Posts: 3 Rating: (0)
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This contribution was helpful to 2 thankful Users Jen_Moderator bergmanu

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