1/25/2024 1:17 PM | |
Joined: 10/30/2023 Last visit: 7/10/2024 Posts: 5 Rating: (0) |
Hi, My goal is to send a fetch/write frame into a Siemens PLC with Node-Red, in order to collect data thanks to captors. For that, I have an IOT2050 which is used to do the link between my laptop and the PLC (of the chamber). Unfortunately, I don't succeed to establish the communication on Node Red.The connection is refused. I created a topic about my issue on the Node Red's forum, you can find it here for more informations : https://discourse.nodered.org/t/creating-a-fetch-write-request-to-retrieve-data-from-a-plc/84871 Apparently, it could be an access problem for the PLC. Do you know how can I fix this problem ? Thank you for your help. |
2/7/2024 12:57 PM | |
Joined: 10/30/2023 Last visit: 7/10/2024 Posts: 5 Rating: (0) |
Hello, sorry for my late response. In fact, I used the s7 nodes and it worked perfectly. Now I can read and write data like I want. However, I have another problem. I developed my flow on Node Red on my laptop (localhost), and then I imported it into the IOT.
It is weird because I do not use MySQL nodes in my flow. But they are installed on my computer. And because I have this module on my laptop and not in the IOT, it prevents the flow to run. So I am forced to install this module. The reading of the data does not start like on my laptop. I've tried to update node-red to fix the problem but it does not work too :
I created a topic on the Node Red's forum (https://discourse.nodered.org/t/npm-err-engine-unsupported-engine/85284/4), and someone told me that IOT2050 is not well supported after v12 Nodejs. Now, when I try to start Node Red, this what I have :
How can I fix my problem and start Node Red like before the update ? Actual version of Node.js :
Thank you for your help.
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