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OPC UA Client with node-red

Created by: bergmanu at: 12/19/2016 9:36 AM (59 Replies)

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2/28/2017 4:49 PM	Rate (0)
JDarius Posts: 215 Rating: (6)	So, what's the correct order? I pressed the button (a notification pooped up with "successfully injected") and I changed the value in the plc. Nothing happened with the gauge. Then I clicked the button again (same notification). No change. I changed the value in the plc again. No change.
JDarius Posts: 215 Rating: (6)
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2/28/2017 5:09 PM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 2/8/2023 Posts: 3089 Rating: (362)	That's correct. At first inject the NodeId and the the Client subscribes this NodeId. Can you add a debug node like in the added screenshot? There the value should be displayed as well if the connection is working. Attachment opcua_debug.jpg (600 Downloads)

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3/1/2017 8:21 AM	Rate (0)
JDarius Posts: 215 Rating: (6)	I'm getting two errors and some bs. See attached screenshot. I suspect the first error to be connected with a faulty installation of the node red contribution... The second one I can't interprete. I'm not trying to reach a PLC on 192.whatsoever. Furthermore, I'm getting four messages of: "Failure (Bad values)" Attachment error_opc.jpg (525 Downloads)
JDarius Posts: 215 Rating: (6)
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3/1/2017 9:22 AM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 2/8/2023 Posts: 3089 Rating: (362)	The second failure belongs to your S7 node I guess, because of the port 102, as well as the Bad values failures. The "Failure (Bad values)" appears if there is no connection to the configured PLC. I suggest to remove the folder "node-red-contirb-opcua" in the directory /usr/lib/node_modules and install it again via npm install node-red-contrib-opcua@0.2.11 Maybe that helps.

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This contribution was helpful to 1 thankful Users JDarius

3/1/2017 11:11 AM	Rate (0)
JDarius Posts: 215 Rating: (6)	Yep, works as promised. Writing onto the PLC (server) works fine. [split new question]
JDarius Posts: 215 Rating: (6)	Last edited by: JDarius at: 3/1/2017 11:11:36 AM Last edited by: JDarius at: 3/1/2017 11:24:47 AM Last edited by: Min_Moderator at: 3/1/2017 11:50:40 AM Split new question
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3/16/2017 10:21 AM	Rate (0)
anjalirani Posts: 25 Rating: (1)	hii, i don't have a directory named node_modules in usr/lib when i try to use the following command npm install node-red-contrib-opcua, it is showing that npm command not found. what is going wrong?
anjalirani Posts: 25 Rating: (1)
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3/16/2017 10:43 AM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 2/8/2023 Posts: 3089 Rating: (362)	Hi, which version of the image do you use? cat /etc/image-version Best regards

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3/16/2017 8:26 PM	Rate (0)
softwarejoker Posts: 1 Rating: (0)	root@iot2000:/etc# cat image-release IMAGE_RELEASE="V2.1.2" and i get also a lot of errors root@iot2000:/usr/lib/node_modules# npm install node-red-contrib-opcua npm ERR! Linux 4.4.13-yocto-standard npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "node-red-contrib-opcua" npm ERR! node v4.2.4 npm ERR! npm v2.14.12 npm ERR! code EAI_AGAIN npm ERR! errno EAI_AGAIN npm ERR! syscall getaddrinfo npm ERR! getaddrinfo EAI_AGAIN registry.npmjs.org:443 npm ERR! npm ERR! If you need help, you may report this error at: npm ERR! <https://github.com/npm/npm/issues> npm ERR! Please include the following file with any support request: npm ERR! /usr/lib/node_modules/npm-debug.log any ideas?
softwarejoker Posts: 1 Rating: (0)
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3/17/2017 7:24 AM	Rate (0)
AutoGen_2630904 Posts: 71 Rating: (16)	It looks like you don't have internet access on your device. Check your internet connection (use ping google.com to test) and try again.
AutoGen_2630904 Posts: 71 Rating: (16)
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3/31/2017 9:46 AM	Rate (0)
DJ_1 Gold Member Joined: 2/27/2014 Last visit: 12/22/2022 Posts: 688 Rating: (193)	Hello, While installing OPC UA , i am getting attached error. Attachment OPCUA.png (510 Downloads)
	With Best Regards, DJ TIA Portal - Your Gateway to automation in the Digital enterprise If you feel this post is useful then don't forget to rate it
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