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Collecting data from a PLC 1200, with an IOT 2040 and with the help of Node Red.

Created by: kampos46 at: 4/2/2022 1:46 PM (17 Replies)

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4/28/2022 12:11 AM	Rate (0)
kampos46 Member Joined: 11/8/2020 Last visit: 7/12/2022 Posts: 9 Rating: (0)	bergmanu Hi, please use the Example Image V3.1.1. With this image the dashboard are already pre-installed and there is no need to install them. From the Node-Red version in your screenshot it seems you are using any older Example Image. The easiest way to have access to the IOT2040 and to the PLC from your PC is using a switch. Connect your PC, X1 of IOT2040 and the PLC to this switch and set all devices in subnet 192.168.200.xxx. When using a S7-1215 or S7-1217 you can use the two ports of the PLC as a switch. Connect the PC to one of the ports and the IOT2040 to the other port. In this case also all devices have an IP address in subnet 192.168.200.xxx. Best regards! Problem solved, thank you very much! I have some doubts regarding my project. I want to collect data from the sensors of a house (thermostat, presence sensors, etc...) with a PLC S-1200. I want to be able to store these data in the cloud, visualize them and modify them through any device connected to the network, thanks to an IOT2040 and Node-Red. But I think my problem is that I don't understand very well what each device does and what is the mission of each one. The PLC yes, but the IOT I do not know if it is responsible for connecting the data with cloud and interact with them through MQTT which in turn is implemented in Node-RED, am I right? When I put the MQTT node, in the server option, I have to put the IP address of the IOT or the address of a broker such as myqtthub? What is the difference between one or the other? What makes that I from another device (for example a mobile phone) connected to the same WIFI network to which the IOT is connected through the USB, allows me to enter in the dashboard of Node-Red and visualize the data? What should I do for this? What I have connected is the IOT to the PC on the X1 and the PLC to the IOT on the X2 and the USB Wifi. Best regards
	Last edited by: kampos46 at: 04/28/2022 00:12:09
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4/28/2022 10:11 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 11/5/2024 Posts: 3345 Rating: (379)	Hi, the IOT2000 is collecting the data from the PLC and sending them to the cloud via MQTT (as a publisher). This is done / programmed in Node-Red, which also runs on the IOT2000. The broker needs to be set in the MQTT node. This can either be 127.0.0.1 (the IOT2000 itself (localhost)) or the IP of a public broker. The IOT2000 runs a MQTT broker as well, there is no difference in using this one or a public one. If you want to use the IOT2000 MQTT broker you need to activate the Mosquitto Broker in iot2000setup (same as you did for node-red). You can connect from any device in the same network to the Node-Red page of the IOT2000, there is nothing to be done. The device connects to webpage (same as it would to e.g. google.com, but in the local network). Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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4/28/2022 7:33 PM	Rate (0)
kampos46 Member Joined: 11/8/2020 Last visit: 7/12/2022 Posts: 9 Rating: (0)	bergmanu Hi, the IOT2000 is collecting the data from the PLC and sending them to the cloud via MQTT (as a publisher). This is done / programmed in Node-Red, which also runs on the IOT2000. The broker needs to be set in the MQTT node. This can either be 127.0.0.1 (the IOT2000 itself (localhost)) or the IP of a public broker. The IOT2000 runs a MQTT broker as well, there is no difference in using this one or a public one. If you want to use the IOT2000 MQTT broker you need to activate the Mosquitto Broker in iot2000setup (same as you did for node-red). You can connect from any device in the same network to the Node-Red page of the IOT2000, there is nothing to be done. The device connects to webpage (same as it would to e.g. google.com, but in the local network). Best regards! Thank you again. It is that I enter with the mobile from the same network with the IP 192.168.200.1:1880/ui to see the dashboard and it stays like loading for a moment but does not access. What can be the reason? I understand about the IP of the server, that is indifferent putting the IP of the IOT or that of a public broker. I have seen in some tutorial also that in Tia Portal they introduce a MQTT block in the programming, but in my case I do not have it, is it necessary? I imagine that it would be necessary in the case of not having the IOT 2040? Best regards!

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5/3/2022 9:11 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 11/5/2024 Posts: 3345 Rating: (379)	Hi, which browser are you using on your phone? The TIA block for MQTT can be used to send data directly from the PLC to a cloud - the IOT is not needed in this use case. So your assumption is correect. Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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5/12/2022 9:02 AM	Rate (0)
kampos46 Member Joined: 11/8/2020 Last visit: 7/12/2022 Posts: 9 Rating: (0)	bergmanu Hi, which browser are you using on your phone? The TIA block for MQTT can be used to send data directly from the PLC to a cloud - the IOT is not needed in this use case. So your assumption is correect. Best regards! With Google Chrome but I have tried other browsers and the same thing. It's a bit strange because it keeps loading the page for a while and it looks like it's going to enter but in the end it doesn't do it. Regarding the mqtt node I understand that you have to have an mqtt node for each variable you want to display, right? As with the s7 node that is used one for each variable (for example one for the lighting, another one for the presence sensor, etc...). Thanks mate!

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5/12/2022 11:29 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 11/5/2024 Posts: 3345 Rating: (379)	Hi, I tested with Chrome 101.0.4951.44 (current version) on iOS 15.4.1 and I can access node-red without any problems. I am running Example Image V1.2.1 with node-red 2.0.6. You do not need to use a single MQTT node for each tag. You can connect more tags to one MQTT out node. Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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7/4/2022 4:59 PM	Rate (0)
kampos46 Member Joined: 11/8/2020 Last visit: 7/12/2022 Posts: 9 Rating: (0)	bergmanu Hi, I tested with Chrome 101.0.4951.44 (current version) on iOS 15.4.1 and I can access node-red without any problems. I am running Example Image V1.2.1 with node-red 2.0.6. You do not need to use a single MQTT node for each tag. You can connect more tags to one MQTT out node. Best regards! Hi bergmanu, I still can't access from another device, it's very rare. I enter in node red putting the IP of the IOT (192.168.200.1:1880) in the browser of the computer (to which it is connected) and it enters without problems, but from another device no. I remember the configuration. PLC: 192.168.200.10 IOT:192.168.200.1 Ethernet: 192.168.200.50 I am desperate with this, see if you can help me. Then another issue, whenever I install node red packages in the iot I have to do it from the putty with the corresponding command, it NEVER WORKS to install it from the NodeRed palette itself and it is also desperate, why can it be? And related to this, before I have installed in this way the telegram, sqlite and file-lister packages. In principle everything worked fine in the installation but then I do not see them in node red, I do not see these packages. Why does this happen? I have these versions. Node-RED version: v1.2.1 [info] Node.js version: v8.17.0 I'm having a lot of problems in all aspects with the iot node red, I don't know if it's the version or the image, but it's very frustrating to find so many incompatibility problems with everything...

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7/5/2022 8:43 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 11/5/2024 Posts: 3345 Rating: (379)	Hi, the IOT2040 is only connected directly to your PC? Or are you using a router / switch? If it was connected directly to the PC, it is obvious that another device cannot access it. Can you please post the output of the command nmcli? There is an issue, that you need to use the command line with -g flag to install nodes. I think this is somehow related to the old versions being used. Much nodes have suspended support of NodeJS 8. That mostly is the reason why installed nodes are not displayed, as they are not compatible. Mostly the compatibility to NodeJS version can be found on the node-red website of the respective node. What command are you using to install the nodes which are not displayed? Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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