Hello,

I use PUT/GET just like in example:

https://support.industry.siemens.com/cs/document/1819293/sample-program%3A-s7-communication-with-the-blocks-sfb14-(-get-)-and-sfb15-(-put-)-with-s7-400?dti=0&lc=en-US

The only change is timer M60 instead of M10. And I transfer data from db200 to db200 instead of mixing the numbers (I've tried mixing like in an example, the result was the same)

The communication is between 317-6FF04-0AB0 and 410-5AX08-0AB0. And PCS7 is used on both sides.

When I tried to transfer data like in example  - Array of 20 bytes, it was successful, but when I try to transfer struct of bytes and reals (shown in example) I have no success. I always get 0 on both sides. Connection is present and in status it shows GET_NDR = 1. Any ideas what is missing?

As I see in example, there is instance DB100 of FB100 in both PLC. Why is that?

I tried to transfer array of REAL instead of bytes and communication went into error immediately.

Any thoughts are welcome. Thanks

After some time it seems I moved a bit forward. The communication is working, [snip]

Best regards

KarolisL