# S7comm with raspberry pi
**URL:** https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954
**Category:** Industrial
**Created:** [12 July 2020 15:16 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954 "2020-07-12T15:16:50Z")
**Posts on this page:** 16
**Page:** 1
### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [12 July 2020 15:16 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/1 "2020-07-12T15:16:50Z")
Hi everyone.
I am using using "s7comm" node with raspberry pi in a common network. But It shows "error" and "disconnected". While I used the same setting with my laptop and that was working fine. Does anyone know how to fix this issue?
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [12 July 2020 16:59 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/2 "2020-07-12T16:59:01Z")
Can you ping the s7 from the Pi?
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [12 July 2020 18:10 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/3 "2020-07-12T18:10:36Z")
Check the following picture for further detail:
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [12 July 2020 20:47 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/4 "2020-07-12T20:47:33Z")
And the answer to my question?
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [13 July 2020 00:27 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/5 "2020-07-13T00:27:29Z")
I am not sure about it.
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [13 July 2020 04:36 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/6 "2020-07-13T04:36:30Z")
What you not sure about? How to ping???
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [13 July 2020 07:51 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/7 "2020-07-13T07:51:31Z")
Yeah, I just connected raspberry pi, PLC, and my laptop on the same network. And just used "s7comm" node.
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [13 July 2020 15:33 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/8 "2020-07-13T15:33:47Z")
Have you really checked they are all on the same network? That is why I asked
To verify this, what is shown when you write "ifconfig" in a terminal?
What is your router ip address?
Then try to ping your router, your laptop and then the s7. Here I ping my router
If you feel uncomfortable with these type of linux commands, I'm worried, don't think I can help you more
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [13 July 2020 17:29 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/9 "2020-07-13T17:29:47Z")
Thanks for your kind response, I always happy to learn something new and It will be my pleasure to learn something form you.
My router IP is :192.168.178.1 and PLC IP is :192.168.0.1
While I used both commands and the following image shows the status.
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [13 July 2020 17:52 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/10 "2020-07-13T17:52:09Z")
I think there is the problem. The PLC (S7) has ip 192.168.0.1 so I assume you cannot reach it from the RPi that has 192.168.178.82
They are on different network segment so I do not think you can ping the S7 from the Rpi
Try now the following command on the raspberry:
ping 192.168.0.1
What is shown now?
I assume you have to change so they are all on the same network segment. Easiest might be to change the ip in the S7 to a free address, something like 192.168.178.X (where X is a number not already taken)
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [13 July 2020 18:08 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/11 "2020-07-13T18:08:10Z")
> [@krambriw](#):
>
> ping 192.168.0.1
I got this.
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [13 July 2020 18:19 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/12 "2020-07-13T18:19:26Z")
Yes exactly what I guessed, there is no response from the S7
Can you now change the ip-address of the S7 to something 192.168.178.X and test again (you might have to restart the S7 after the change, I do not now how to configure the S7 (even though I worked for Siemens many years)
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [13 July 2020 18:20 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/13 "2020-07-13T18:20:46Z")
I have changed my PLC IP and now it is working 😃
Thanks, @krambriw for your kind help.
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [13 July 2020 18:21 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/14 "2020-07-13T18:21:24Z")
Wonderful!!!
Now your Node-RED connection must work also!
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### Author:  [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)
#### Post date: [13 July 2020 18:22 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/15 "2020-07-13T18:22:01Z")
Yes 😃
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [27 July 2020 18:22 UTC](https://discourse.nodered.org/t/s7comm-with-raspberry-pi/29954/16 "2020-07-27T18:22:02Z")
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