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Configuring S7-1200 PLC to communicate with node-red ...
#4
Hi there,

the Web-UI of netPI is executed and featured by netPI's Raspberry Pi CPU. The PROFINET is featured by the second netPI controller named netX coming from Hilscher.

Since both controller are running totally independent there is no influence between both. So when the Node-Page is available before connecting the S7 then this page must be also available after you connect the S7.

Now to your problem and this is just a guess from my side. When the S7 establishes a connection to netPI over PROFINET then it assigns an IP address to the fieldbus ports. This is the IP address you configure in TIA. If now in the whole switched network a double IP address get present then usually the interfaces are going offline and are not reachable any more. So supposing your netPI primary ethernet port is configured in netPI's web UI to 192.168.0.2 and later the S7 configures the same address 192.168.0.2 on the fieldbus ports too ... which is not allowed by the way .. then netPIs ethernet port will go offine. I think this is the problem right now.

So what is your IP address of your netPI and eth0 port?

To your questions in detail

1. no it never stop it
2. no you do not need to configure something in advance. You can do all configurations in parallel

Thx
Armin
You never fail until you stop trying.“, Albert Einstein (1879 - 1955)

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RE: Configuring S7-1200 PLC to communicate with node-red ... - by Armin@netPI - January-27th-2021, 11:01 AM

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