Hello

here is a comunication with s7-1200

https://support.industry.siemens.com/cs/ww/en/view/38051505

Logo as server write data to S7-1200 to tags.Works OK 

Many example search to youtube.

But logo as client. Data writes from S7-1200 to logo NOT work.

Does anyone have any instructions how to communication  put get  with S7-1200

Thanks

FrantaM

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Split from LOGO! 8 FS4 & S7-1200: Communication doesn't work..

Hello frantam

Have you try to unchek the checkbox "Establish active connection" in TIA?

Because for me that was the problem. 

Hello

no this function help only if logo writes data to s7. I need read and write data from s7 to logo. I must using put get instructin. Connection S7 writes has established. PUT get instruction not works.

FrantaM

Also, Modbus should work.

Follow the Link.

https://www.youtube.com/watch?v=gHTI1xYwLeU

Please review the GIF video attached.

The video shows a connection between CPU1212C FW4.2 and LOGO OBA8 in both directions. There is no active program running in the CPU1200 but a program is running in the LOGO for processing a number.

The PDF added by <NIBOU> was very helpful in making the configurations. The CPU1200 configuration diverts a little, but all the settings mentioned should be made.

IMPORTANT ADDITION:
The permission for PUT and GET must be given in the security settings. It would otherwise not work. The tags of MW100 and MW102 (as used in the video) was given permission to link to the communication partner.

For the configuration for the LOGO is different. The network view was used: placing the LOGO and S7 devices. The configuration of the data exchange was done in the network input and network output blocks. These are detailed in the video.

@frantam: Is the result shown in the video what you are aiming for?

Hello

Thanks all but i need write data from s7-1200 to logo.

Write only one times data to logo (configurating data) from s7-1200.

This example send or read data cyclic from logo and works fine.

Is not posible read configurating data as gain in amplifier or value in counter in logo read cyklic before disconecting s7-1200 logo reads null. And here is then problem. I must write data one time. logo this function.

FrantaM

Hello.

frantam

Hello

Thanks all but i need write data from s7-1200 to logo.

Write only one times data to logo (configurating data) from s7-1200.

This example send or read data cyclic from logo and works fine.

Is not posible read configurating data as gain in amplifier or value in counter in logo read cyklic before disconecting s7-1200 logo reads null. And here is then problem. I must write data one time. logo this function.

FrantaM

Thank you, I understand now the motivation for your question. Very valid.

What about a work-around?
Send two values:
1. The configuration value.
2. Bit field stating which configuration it is.

The most basic would be that `value2 = 1` would tell the LOGO that `value1` can be used. Expanded version would have `value1` be able to set 16 different attributes.

Perhaps the German language Forum may have other suggestions to make. There are very many people with LOGO knowledge that is willing to share experiences. Else register a formal support request using the 'Support Request' button on this web page.

Regards.

Hello.

ixo65

I found a YouTube video, maybe this helps.

https://www.youtube.com/watch?v=NeR4wRWfgMg

A worthwhile video to watch. Well detailed. Very well made!!

Thank you <ixo65>.

The video does not directly show how that S7-1200 can establish communications to deliver a value once and not continuously. The idea is to occupy the network only when needed. It is a solution required for the S7-1200 side.

Perhaps the TCON and TDISCON instructions can be used on the S7-1200? This question is perhaps best asked in the Communications conference --- focusing on the S7-1200 side.

BR