Hello everybody.

I have problem with comunication betwene CPU 1517 in Tia v15.1 and CPU 319 in step7 5.5.

For comunication I use PN/PN coupler 158-3AD01-0XA0. In both sides is everithing in HW config green and withou some errors. but, when I check signals from other side, I see nothing.

Have somebody some ideas, what can by wrong?

Hello Vings;

I suggest you look at the following article, which proposes a step-by-step installation of a PN/PN Coupler between CPUs under Step 7 v5.5 and TIA Portal.

https://theautomationblog.com/exchange-data-between-simatic-s7-plcs-on-different-subnets/

Compare your setup with the one provided in the example program abobve.

Hope this helps,

Daniel Chartier 

Thanks for your answer.

Can I have problem with coupler version?

Becouse I use V3.0. In different options and I have the same situation like in your example.