Hello Vega,

in this documentation
http://support.automation.siemens.com/WW/view/de/78028908/0/en

in Chapter 21.4.4 you find an overview for the types of communication for your constellation.
With PUT/GET, the CP341-1 lean must be Server.

Please note, that the error number of GETare decimal, so you have error numbers "1" and "25".

Why don´t you use the open communication with the "T-blocks"? So you don´t need the CP341-1 lean...
Information therefore you also find in the documentation above.

Greetings,
Pittiplatsch

Vega

Dear All,

I have a problem with establishing S7 connection between S7 1200 and CP343-1 Lean. I need to read and write from S7 1200 to the CPU315 2PN-DP which is connected to CP343 Lean. So the S7 1200 should be active partner and the CP343 Lean should be passive partner. I tried to fetch data with S7 connection with GET and PUT commands but on the GET command status there is error number 1 and 19. Is this connection possible? Must I program in S7 300 send and receive commands? IS there a way that S7 1200 could be active partner in this connection?

Thanks