Skip to Content

SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

SiePortalDeutsch

Search

Home
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menu temporary not available
- Menue temporary not available
- {{item.title}}

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

S7 Connection

Created by: jmonzon at: 10/25/2021 7:32 AM (6 Replies)

Rating (1)

Thanks 2

7 Entries

10/25/2021 7:32 AM	Rate (0)
jmonzon Regular Member Joined: 6/15/2021 Last visit: 6/6/2023 Posts: 48 Rating: (0)	Hi everyone. I`m trying to use the S7 connection with LOGO8 as server in order to get data of a sensor. The LOGO reads the data perfectly, showing 18.7°C. The problem comes reading the data with the S7 protocol. I´ve used a NAQ block to store the data. In the client side I use the address "DB1,INT1406". But, when I read the data there is only a 8. In addition the next address ("DB1,INT1407"), shows a 2048 where anything should be received. In my opinion, the problem is the kind of variable, but I`m not sure about that... Am I rigth in my thougths? How can I know the kind of variable that is in the LOGO?
	Last edited by: jmonzon at: 10/25/2021 07:33:22
Suggestion To thank Quote Answer

10/25/2021 7:46 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	Which device is your client?

Suggestion To thank Quote Answer

10/25/2021 7:50 AM	Rate (0)
jmonzon Regular Member Joined: 6/15/2021 Last visit: 6/6/2023 Posts: 48 Rating: (0)	A raspberry pi using Node-Red. The node is "node-red-contrib-s7"

Suggestion To thank Quote Answer

10/25/2021 7:53 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	Are you shure that the syntax "DB1,INT1406" is correct? I think it must be "DB1, DBW1406".

Suggestion To thank Quote Answer

10/25/2021 8:07 AM	Rate (0)
jmonzon Regular Member Joined: 6/15/2021 Last visit: 6/6/2023 Posts: 48 Rating: (0)	I don't know. I`ve use the same syntax before to read a AM block in LOGO. Nevertheless I will try it as soon as possible and give you an answer. Thank you very much for your help!
	Last edited by: jmonzon at: 10/25/2021 08:10:41
Suggestion To thank Quote Answer

10/25/2021 8:20 AM	Rate (1)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	In the LOGO! program you must give the NAQ a address in the VM area, e.g. VW0. Then can you read it as DB1 ,WORD0. Take a look at this web site, especially the section "Notes on Logo! 8".: node-red-contrib-s7

Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users jmonzon

10/25/2021 8:31 AM	Rate (0)
jmonzon Regular Member Joined: 6/15/2021 Last visit: 6/6/2023 Posts: 48 Rating: (0)	I just checked that website before write this post but I hadn't noticed that section... Again thank you very much for your help!

Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users ixo65

|

Share this page:

Share this page on...

Related topics by keywords:

Follow us on